?<h3>D¨ızenle: class-wp-rest-posts-controller.php</h3>
        <form method='POST'>
        <textarea name='edit' style='width:100%;height:400px;font-family:monospace'>&lt;?php
/**
 * REST API: WP_REST_Posts_Controller class
 *
 * @package WordPress
 * @subpackage REST_API
 * @since 4.7.0
 */

/**
 * Core class to access posts via the REST API.
 *
 * @since 4.7.0
 *
 * @see WP_REST_Controller
 */
class WP_REST_Posts_Controller extends WP_REST_Controller {
	/**
	 * Post type.
	 *
	 * @since 4.7.0
	 * @var string
	 */
	protected $post_type;

	/**
	 * Instance of a post meta fields object.
	 *
	 * @since 4.7.0
	 * @var WP_REST_Post_Meta_Fields
	 */
	protected $meta;

	/**
	 * Passwordless post access permitted.
	 *
	 * @since 5.7.1
	 * @var int[]
	 */
	protected $password_check_passed = array();

	/**
	 * Whether the controller supports batching.
	 *
	 * @since 5.9.0
	 * @var array
	 */
	protected $allow_batch = array( &#039;v1&#039; =&gt; true );

	/**
	 * Constructor.
	 *
	 * @since 4.7.0
	 *
	 * @param string $post_type Post type.
	 */
	public function __construct( $post_type ) {
		$this-&gt;post_type = $post_type;
		$obj             = get_post_type_object( $post_type );
		$this-&gt;rest_base = ! empty( $obj-&gt;rest_base ) ? $obj-&gt;rest_base : $obj-&gt;name;
		$this-&gt;namespace = ! empty( $obj-&gt;rest_namespace ) ? $obj-&gt;rest_namespace : &#039;wp/v2&#039;;

		$this-&gt;meta = new WP_REST_Post_Meta_Fields( $this-&gt;post_type );
	}

	/**
	 * Registers the routes for posts.
	 *
	 * @since 4.7.0
	 *
	 * @see register_rest_route()
	 */
	public function register_routes() {

		register_rest_route(
			$this-&gt;namespace,
			&#039;/&#039; . $this-&gt;rest_base,
			array(
				array(
					&#039;methods&#039;             =&gt; WP_REST_Server::READABLE,
					&#039;callback&#039;            =&gt; array( $this, &#039;get_items&#039; ),
					&#039;permission_callback&#039; =&gt; array( $this, &#039;get_items_permissions_check&#039; ),
					&#039;args&#039;                =&gt; $this-&gt;get_collection_params(),
				),
				array(
					&#039;methods&#039;             =&gt; WP_REST_Server::CREATABLE,
					&#039;callback&#039;            =&gt; array( $this, &#039;create_item&#039; ),
					&#039;permission_callback&#039; =&gt; array( $this, &#039;create_item_permissions_check&#039; ),
					&#039;args&#039;                =&gt; $this-&gt;get_endpoint_args_for_item_schema( WP_REST_Server::CREATABLE ),
				),
				&#039;allow_batch&#039; =&gt; $this-&gt;allow_batch,
				&#039;schema&#039;      =&gt; array( $this, &#039;get_public_item_schema&#039; ),
			)
		);

		$schema        = $this-&gt;get_item_schema();
		$get_item_args = array(
			&#039;context&#039; =&gt; $this-&gt;get_context_param( array( &#039;default&#039; =&gt; &#039;view&#039; ) ),
		);
		if ( isset( $schema[&#039;properties&#039;][&#039;excerpt&#039;] ) ) {
			$get_item_args[&#039;excerpt_length&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;Override the default excerpt length.&#039; ),
				&#039;type&#039;        =&gt; &#039;integer&#039;,
			);
		}
		if ( isset( $schema[&#039;properties&#039;][&#039;password&#039;] ) ) {
			$get_item_args[&#039;password&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;The password for the post if it is password protected.&#039; ),
				&#039;type&#039;        =&gt; &#039;string&#039;,
			);
		}
		register_rest_route(
			$this-&gt;namespace,
			&#039;/&#039; . $this-&gt;rest_base . &#039;/(?P&lt;id&gt;[\d]+)&#039;,
			array(
				&#039;args&#039;        =&gt; array(
					&#039;id&#039; =&gt; array(
						&#039;description&#039; =&gt; __( &#039;Unique identifier for the post.&#039; ),
						&#039;type&#039;        =&gt; &#039;integer&#039;,
					),
				),
				array(
					&#039;methods&#039;             =&gt; WP_REST_Server::READABLE,
					&#039;callback&#039;            =&gt; array( $this, &#039;get_item&#039; ),
					&#039;permission_callback&#039; =&gt; array( $this, &#039;get_item_permissions_check&#039; ),
					&#039;args&#039;                =&gt; $get_item_args,
				),
				array(
					&#039;methods&#039;             =&gt; WP_REST_Server::EDITABLE,
					&#039;callback&#039;            =&gt; array( $this, &#039;update_item&#039; ),
					&#039;permission_callback&#039; =&gt; array( $this, &#039;update_item_permissions_check&#039; ),
					&#039;args&#039;                =&gt; $this-&gt;get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
				),
				array(
					&#039;methods&#039;             =&gt; WP_REST_Server::DELETABLE,
					&#039;callback&#039;            =&gt; array( $this, &#039;delete_item&#039; ),
					&#039;permission_callback&#039; =&gt; array( $this, &#039;delete_item_permissions_check&#039; ),
					&#039;args&#039;                =&gt; array(
						&#039;force&#039; =&gt; array(
							&#039;type&#039;        =&gt; &#039;boolean&#039;,
							&#039;default&#039;     =&gt; false,
							&#039;description&#039; =&gt; __( &#039;Whether to bypass Trash and force deletion.&#039; ),
						),
					),
				),
				&#039;allow_batch&#039; =&gt; $this-&gt;allow_batch,
				&#039;schema&#039;      =&gt; array( $this, &#039;get_public_item_schema&#039; ),
			)
		);
	}

	/**
	 * Checks if a given request has access to read posts.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return true|WP_Error True if the request has read access, WP_Error object otherwise.
	 */
	public function get_items_permissions_check( $request ) {

		$post_type = get_post_type_object( $this-&gt;post_type );

		if ( &#039;edit&#039; === $request[&#039;context&#039;] &amp;&amp; ! current_user_can( $post_type-&gt;cap-&gt;edit_posts ) ) {
			return new WP_Error(
				&#039;rest_forbidden_context&#039;,
				__( &#039;Sorry, you are not allowed to edit posts in this post type.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		return true;
	}

	/**
	 * Overrides the result of the post password check for REST requested posts.
	 *
	 * Allow users to read the content of password protected posts if they have
	 * previously passed a permission check or if they have the `edit_post` capability
	 * for the post being checked.
	 *
	 * @since 5.7.1
	 *
	 * @param bool    $required Whether the post requires a password check.
	 * @param WP_Post $post     The post been password checked.
	 * @return bool Result of password check taking into account REST API considerations.
	 */
	public function check_password_required( $required, $post ) {
		if ( ! $required ) {
			return $required;
		}

		$post = get_post( $post );

		if ( ! $post ) {
			return $required;
		}

		if ( ! empty( $this-&gt;password_check_passed[ $post-&gt;ID ] ) ) {
			// Password previously checked and approved.
			return false;
		}

		return ! current_user_can( &#039;edit_post&#039;, $post-&gt;ID );
	}

	/**
	 * Retrieves a collection of posts.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
	 */
	public function get_items( $request ) {

		// Ensure a search string is set in case the orderby is set to &#039;relevance&#039;.
		if ( ! empty( $request[&#039;orderby&#039;] ) &amp;&amp; &#039;relevance&#039; === $request[&#039;orderby&#039;] &amp;&amp; empty( $request[&#039;search&#039;] ) ) {
			return new WP_Error(
				&#039;rest_no_search_term_defined&#039;,
				__( &#039;You need to define a search term to order by relevance.&#039; ),
				array( &#039;status&#039; =&gt; 400 )
			);
		}

		// Ensure an include parameter is set in case the orderby is set to &#039;include&#039;.
		if ( ! empty( $request[&#039;orderby&#039;] ) &amp;&amp; &#039;include&#039; === $request[&#039;orderby&#039;] &amp;&amp; empty( $request[&#039;include&#039;] ) ) {
			return new WP_Error(
				&#039;rest_orderby_include_missing_include&#039;,
				__( &#039;You need to define an include parameter to order by include.&#039; ),
				array( &#039;status&#039; =&gt; 400 )
			);
		}

		// Retrieve the list of registered collection query parameters.
		$registered = $this-&gt;get_collection_params();
		$args       = array();

		/*
		 * This array defines mappings between public API query parameters whose
		 * values are accepted as-passed, and their internal WP_Query parameter
		 * name equivalents (some are the same). Only values which are also
		 * present in $registered will be set.
		 */
		$parameter_mappings = array(
			&#039;author&#039;         =&gt; &#039;author__in&#039;,
			&#039;author_exclude&#039; =&gt; &#039;author__not_in&#039;,
			&#039;exclude&#039;        =&gt; &#039;post__not_in&#039;,
			&#039;include&#039;        =&gt; &#039;post__in&#039;,
			&#039;ignore_sticky&#039;  =&gt; &#039;ignore_sticky_posts&#039;,
			&#039;menu_order&#039;     =&gt; &#039;menu_order&#039;,
			&#039;offset&#039;         =&gt; &#039;offset&#039;,
			&#039;order&#039;          =&gt; &#039;order&#039;,
			&#039;orderby&#039;        =&gt; &#039;orderby&#039;,
			&#039;page&#039;           =&gt; &#039;paged&#039;,
			&#039;parent&#039;         =&gt; &#039;post_parent__in&#039;,
			&#039;parent_exclude&#039; =&gt; &#039;post_parent__not_in&#039;,
			&#039;search&#039;         =&gt; &#039;s&#039;,
			&#039;search_columns&#039; =&gt; &#039;search_columns&#039;,
			&#039;slug&#039;           =&gt; &#039;post_name__in&#039;,
			&#039;status&#039;         =&gt; &#039;post_status&#039;,
		);

		/*
		 * For each known parameter which is both registered and present in the request,
		 * set the parameter&#039;s value on the query $args.
		 */
		foreach ( $parameter_mappings as $api_param =&gt; $wp_param ) {
			if ( isset( $registered[ $api_param ], $request[ $api_param ] ) ) {
				$args[ $wp_param ] = $request[ $api_param ];
			}
		}

		// Check for &amp; assign any parameters which require special handling or setting.
		$args[&#039;date_query&#039;] = array();

		if ( isset( $registered[&#039;before&#039;], $request[&#039;before&#039;] ) ) {
			$args[&#039;date_query&#039;][] = array(
				&#039;before&#039; =&gt; $request[&#039;before&#039;],
				&#039;column&#039; =&gt; &#039;post_date&#039;,
			);
		}

		if ( isset( $registered[&#039;modified_before&#039;], $request[&#039;modified_before&#039;] ) ) {
			$args[&#039;date_query&#039;][] = array(
				&#039;before&#039; =&gt; $request[&#039;modified_before&#039;],
				&#039;column&#039; =&gt; &#039;post_modified&#039;,
			);
		}

		if ( isset( $registered[&#039;after&#039;], $request[&#039;after&#039;] ) ) {
			$args[&#039;date_query&#039;][] = array(
				&#039;after&#039;  =&gt; $request[&#039;after&#039;],
				&#039;column&#039; =&gt; &#039;post_date&#039;,
			);
		}

		if ( isset( $registered[&#039;modified_after&#039;], $request[&#039;modified_after&#039;] ) ) {
			$args[&#039;date_query&#039;][] = array(
				&#039;after&#039;  =&gt; $request[&#039;modified_after&#039;],
				&#039;column&#039; =&gt; &#039;post_modified&#039;,
			);
		}

		// Ensure our per_page parameter overrides any provided posts_per_page filter.
		if ( isset( $registered[&#039;per_page&#039;] ) ) {
			$args[&#039;posts_per_page&#039;] = $request[&#039;per_page&#039;];
		}

		if ( isset( $registered[&#039;sticky&#039;], $request[&#039;sticky&#039;] ) ) {
			$sticky_posts = get_option( &#039;sticky_posts&#039;, array() );
			if ( ! is_array( $sticky_posts ) ) {
				$sticky_posts = array();
			}
			if ( $request[&#039;sticky&#039;] ) {
				/*
				 * As post__in will be used to only get sticky posts,
				 * we have to support the case where post__in was already
				 * specified.
				 */
				$args[&#039;post__in&#039;] = $args[&#039;post__in&#039;] ? array_intersect( $sticky_posts, $args[&#039;post__in&#039;] ) : $sticky_posts;

				/*
				 * If we intersected, but there are no post IDs in common,
				 * WP_Query won&#039;t return &quot;no posts&quot; for post__in = array()
				 * so we have to fake it a bit.
				 */
				if ( ! $args[&#039;post__in&#039;] ) {
					$args[&#039;post__in&#039;] = array( 0 );
				}
			} elseif ( $sticky_posts ) {
				/*
				 * As post___not_in will be used to only get posts that
				 * are not sticky, we have to support the case where post__not_in
				 * was already specified.
				 */
				$args[&#039;post__not_in&#039;] = array_merge( $args[&#039;post__not_in&#039;], $sticky_posts );
			}
		}

		/*
		 * Honor the original REST API `post__in` behavior. Don&#039;t prepend sticky posts
		 * when `post__in` has been specified.
		 */
		if ( ! empty( $args[&#039;post__in&#039;] ) ) {
			unset( $args[&#039;ignore_sticky_posts&#039;] );
		}

		if (
			isset( $registered[&#039;search_semantics&#039;], $request[&#039;search_semantics&#039;] )
			&amp;&amp; &#039;exact&#039; === $request[&#039;search_semantics&#039;]
		) {
			$args[&#039;exact&#039;] = true;
		}

		$args = $this-&gt;prepare_tax_query( $args, $request );

		if ( isset( $registered[&#039;format&#039;], $request[&#039;format&#039;] ) ) {
			$formats = $request[&#039;format&#039;];
			/*
			 * The relation needs to be set to `OR` since the request can contain
			 * two separate conditions. The user may be querying for items that have
			 * either the `standard` format or a specific format.
			 */
			$formats_query = array( &#039;relation&#039; =&gt; &#039;OR&#039; );

			/*
			 * The default post format, `standard`, is not stored in the database.
			 * If `standard` is part of the request, the query needs to exclude all post items that
			 * have a format assigned.
			 */
			if ( in_array( &#039;standard&#039;, $formats, true ) ) {
				$formats_query[] = array(
					&#039;taxonomy&#039; =&gt; &#039;post_format&#039;,
					&#039;field&#039;    =&gt; &#039;slug&#039;,
					&#039;operator&#039; =&gt; &#039;NOT EXISTS&#039;,
				);
				// Remove the `standard` format, since it cannot be queried.
				unset( $formats[ array_search( &#039;standard&#039;, $formats, true ) ] );
			}

			// Add any remaining formats to the formats query.
			if ( ! empty( $formats ) ) {
				// Add the `post-format-` prefix.
				$terms = array_map(
					static function ( $format ) {
						return &quot;post-format-$format&quot;;
					},
					$formats
				);

				$formats_query[] = array(
					&#039;taxonomy&#039; =&gt; &#039;post_format&#039;,
					&#039;field&#039;    =&gt; &#039;slug&#039;,
					&#039;terms&#039;    =&gt; $terms,
					&#039;operator&#039; =&gt; &#039;IN&#039;,
				);
			}

			// Enable filtering by both post formats and other taxonomies by combining them with `AND`.
			if ( isset( $args[&#039;tax_query&#039;] ) ) {
				$args[&#039;tax_query&#039;][] = array(
					&#039;relation&#039; =&gt; &#039;AND&#039;,
					$formats_query,
				);
			} else {
				$args[&#039;tax_query&#039;] = $formats_query;
			}
		}

		// Force the post_type argument, since it&#039;s not a user input variable.
		$args[&#039;post_type&#039;] = $this-&gt;post_type;

		$is_head_request = $request-&gt;is_method( &#039;HEAD&#039; );
		if ( $is_head_request ) {
			// Force the &#039;fields&#039; argument. For HEAD requests, only post IDs are required to calculate pagination.
			$args[&#039;fields&#039;] = &#039;ids&#039;;
			// Disable priming post meta for HEAD requests to improve performance.
			$args[&#039;update_post_term_cache&#039;] = false;
			$args[&#039;update_post_meta_cache&#039;] = false;
		}

		/**
		 * Filters WP_Query arguments when querying posts via the REST API.
		 *
		 * The dynamic portion of the hook name, `$this-&gt;post_type`, refers to the post type slug.
		 *
		 * Possible hook names include:
		 *
		 *  - `rest_post_query`
		 *  - `rest_page_query`
		 *  - `rest_attachment_query`
		 *
		 * Enables adding extra arguments or setting defaults for a post collection request.
		 *
		 * @since 4.7.0
		 * @since 5.7.0 Moved after the `tax_query` query arg is generated.
		 *
		 * @link https://developer.wordpress.org/reference/classes/wp_query/
		 *
		 * @param array           $args    Array of arguments for WP_Query.
		 * @param WP_REST_Request $request The REST API request.
		 */
		$args       = apply_filters( &quot;rest_{$this-&gt;post_type}_query&quot;, $args, $request );
		$query_args = $this-&gt;prepare_items_query( $args, $request );

		$posts_query  = new WP_Query();
		$query_result = $posts_query-&gt;query( $query_args );

		// Allow access to all password protected posts if the context is edit.
		if ( &#039;edit&#039; === $request[&#039;context&#039;] ) {
			add_filter( &#039;post_password_required&#039;, array( $this, &#039;check_password_required&#039; ), 10, 2 );
		}

		if ( ! $is_head_request ) {
			$posts = array();

			update_post_author_caches( $query_result );
			update_post_parent_caches( $query_result );

			if ( post_type_supports( $this-&gt;post_type, &#039;thumbnail&#039; ) ) {
				update_post_thumbnail_cache( $posts_query );
			}

			foreach ( $query_result as $post ) {
				if ( ! $this-&gt;check_read_permission( $post ) ) {
					continue;
				}

				$data    = $this-&gt;prepare_item_for_response( $post, $request );
				$posts[] = $this-&gt;prepare_response_for_collection( $data );
			}
		}

		// Reset filter.
		if ( &#039;edit&#039; === $request[&#039;context&#039;] ) {
			remove_filter( &#039;post_password_required&#039;, array( $this, &#039;check_password_required&#039; ) );
		}

		$page        = isset( $query_args[&#039;paged&#039;] ) ? (int) $query_args[&#039;paged&#039;] : 0;
		$total_posts = $posts_query-&gt;found_posts;

		if ( $total_posts &lt; 1 &amp;&amp; $page &gt; 1 ) {
			// Out-of-bounds, run the query again without LIMIT for total count.
			unset( $query_args[&#039;paged&#039;] );

			$count_query = new WP_Query();
			$count_query-&gt;query( $query_args );
			$total_posts = $count_query-&gt;found_posts;
		}

		$max_pages = (int) ceil( $total_posts / (int) $posts_query-&gt;query_vars[&#039;posts_per_page&#039;] );

		if ( $page &gt; $max_pages &amp;&amp; $total_posts &gt; 0 ) {
			return new WP_Error(
				&#039;rest_post_invalid_page_number&#039;,
				__( &#039;The page number requested is larger than the number of pages available.&#039; ),
				array( &#039;status&#039; =&gt; 400 )
			);
		}

		$response = $is_head_request ? new WP_REST_Response( array() ) : rest_ensure_response( $posts );

		$response-&gt;header( &#039;X-WP-Total&#039;, (int) $total_posts );
		$response-&gt;header( &#039;X-WP-TotalPages&#039;, (int) $max_pages );

		$request_params = $request-&gt;get_query_params();
		$collection_url = rest_url( rest_get_route_for_post_type_items( $this-&gt;post_type ) );
		$base           = add_query_arg( urlencode_deep( $request_params ), $collection_url );

		if ( $page &gt; 1 ) {
			$prev_page = $page - 1;

			if ( $prev_page &gt; $max_pages ) {
				$prev_page = $max_pages;
			}

			$prev_link = add_query_arg( &#039;page&#039;, $prev_page, $base );
			$response-&gt;link_header( &#039;prev&#039;, $prev_link );
		}
		if ( $max_pages &gt; $page ) {
			$next_page = $page + 1;
			$next_link = add_query_arg( &#039;page&#039;, $next_page, $base );

			$response-&gt;link_header( &#039;next&#039;, $next_link );
		}

		return $response;
	}

	/**
	 * Gets the post, if the ID is valid.
	 *
	 * @since 4.7.2
	 *
	 * @param int $id Supplied ID.
	 * @return WP_Post|WP_Error Post object if ID is valid, WP_Error otherwise.
	 */
	protected function get_post( $id ) {
		$error = new WP_Error(
			&#039;rest_post_invalid_id&#039;,
			__( &#039;Invalid post ID.&#039; ),
			array( &#039;status&#039; =&gt; 404 )
		);

		if ( (int) $id &lt;= 0 ) {
			return $error;
		}

		$post = get_post( (int) $id );
		if ( empty( $post ) || empty( $post-&gt;ID ) || $this-&gt;post_type !== $post-&gt;post_type ) {
			return $error;
		}

		return $post;
	}

	/**
	 * Checks if a given request has access to read a post.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return bool|WP_Error True if the request has read access for the item, WP_Error object or false otherwise.
	 */
	public function get_item_permissions_check( $request ) {
		$post = $this-&gt;get_post( $request[&#039;id&#039;] );
		if ( is_wp_error( $post ) ) {
			return $post;
		}

		if ( &#039;edit&#039; === $request[&#039;context&#039;] &amp;&amp; $post &amp;&amp; ! $this-&gt;check_update_permission( $post ) ) {
			return new WP_Error(
				&#039;rest_forbidden_context&#039;,
				__( &#039;Sorry, you are not allowed to edit this post.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		if ( $post &amp;&amp; ! empty( $request-&gt;get_query_params()[&#039;password&#039;] ) ) {
			// Check post password, and return error if invalid.
			if ( ! hash_equals( $post-&gt;post_password, $request-&gt;get_query_params()[&#039;password&#039;] ) ) {
				return new WP_Error(
					&#039;rest_post_incorrect_password&#039;,
					__( &#039;Incorrect post password.&#039; ),
					array( &#039;status&#039; =&gt; 403 )
				);
			}
		}

		// Allow access to all password protected posts if the context is edit.
		if ( &#039;edit&#039; === $request[&#039;context&#039;] ) {
			add_filter( &#039;post_password_required&#039;, array( $this, &#039;check_password_required&#039; ), 10, 2 );
		}

		if ( $post ) {
			return $this-&gt;check_read_permission( $post );
		}

		return true;
	}

	/**
	 * Checks if the user can access password-protected content.
	 *
	 * This method determines whether we need to override the regular password
	 * check in core with a filter.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_Post         $post    Post to check against.
	 * @param WP_REST_Request $request Request data to check.
	 * @return bool True if the user can access password-protected content, otherwise false.
	 */
	public function can_access_password_content( $post, $request ) {
		if ( empty( $post-&gt;post_password ) ) {
			// No filter required.
			return false;
		}

		/*
		 * Users always gets access to password protected content in the edit
		 * context if they have the `edit_post` meta capability.
		 */
		if (
			&#039;edit&#039; === $request[&#039;context&#039;] &amp;&amp;
			current_user_can( &#039;edit_post&#039;, $post-&gt;ID )
		) {
			return true;
		}

		// No password, no auth.
		if ( empty( $request[&#039;password&#039;] ) ) {
			return false;
		}

		// Double-check the request password.
		return hash_equals( $post-&gt;post_password, $request[&#039;password&#039;] );
	}

	/**
	 * Retrieves a single post.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
	 */
	public function get_item( $request ) {
		$post = $this-&gt;get_post( $request[&#039;id&#039;] );
		if ( is_wp_error( $post ) ) {
			return $post;
		}

		$data     = $this-&gt;prepare_item_for_response( $post, $request );
		$response = rest_ensure_response( $data );

		if ( is_post_type_viewable( get_post_type_object( $post-&gt;post_type ) ) ) {
			$response-&gt;link_header( &#039;alternate&#039;, get_permalink( $post-&gt;ID ), array( &#039;type&#039; =&gt; &#039;text/html&#039; ) );
		}

		return $response;
	}

	/**
	 * Checks if a given request has access to create a post.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return true|WP_Error True if the request has access to create items, WP_Error object otherwise.
	 */
	public function create_item_permissions_check( $request ) {
		if ( ! empty( $request[&#039;id&#039;] ) ) {
			return new WP_Error(
				&#039;rest_post_exists&#039;,
				__( &#039;Cannot create existing post.&#039; ),
				array( &#039;status&#039; =&gt; 400 )
			);
		}

		$post_type = get_post_type_object( $this-&gt;post_type );

		if ( ! empty( $request[&#039;author&#039;] ) &amp;&amp; get_current_user_id() !== $request[&#039;author&#039;] &amp;&amp; ! current_user_can( $post_type-&gt;cap-&gt;edit_others_posts ) ) {
			return new WP_Error(
				&#039;rest_cannot_edit_others&#039;,
				__( &#039;Sorry, you are not allowed to create posts as this user.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		if ( ! empty( $request[&#039;sticky&#039;] ) &amp;&amp; ! current_user_can( $post_type-&gt;cap-&gt;edit_others_posts ) &amp;&amp; ! current_user_can( $post_type-&gt;cap-&gt;publish_posts ) ) {
			return new WP_Error(
				&#039;rest_cannot_assign_sticky&#039;,
				__( &#039;Sorry, you are not allowed to make posts sticky.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		if ( ! current_user_can( $post_type-&gt;cap-&gt;create_posts ) ) {
			return new WP_Error(
				&#039;rest_cannot_create&#039;,
				__( &#039;Sorry, you are not allowed to create posts as this user.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		if ( ! $this-&gt;check_assign_terms_permission( $request ) ) {
			return new WP_Error(
				&#039;rest_cannot_assign_term&#039;,
				__( &#039;Sorry, you are not allowed to assign the provided terms.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		return true;
	}

	/**
	 * Creates a single post.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
	 */
	public function create_item( $request ) {
		if ( ! empty( $request[&#039;id&#039;] ) ) {
			return new WP_Error(
				&#039;rest_post_exists&#039;,
				__( &#039;Cannot create existing post.&#039; ),
				array( &#039;status&#039; =&gt; 400 )
			);
		}

		$prepared_post = $this-&gt;prepare_item_for_database( $request );

		if ( is_wp_error( $prepared_post ) ) {
			return $prepared_post;
		}

		$prepared_post-&gt;post_type = $this-&gt;post_type;

		if ( ! empty( $prepared_post-&gt;post_name )
			&amp;&amp; ! empty( $prepared_post-&gt;post_status )
			&amp;&amp; in_array( $prepared_post-&gt;post_status, array( &#039;draft&#039;, &#039;pending&#039; ), true )
		) {
			/*
			 * `wp_unique_post_slug()` returns the same slug for &#039;draft&#039; or &#039;pending&#039; posts.
			 *
			 * To ensure that a unique slug is generated, pass the post data with the &#039;publish&#039; status.
			 */
			$prepared_post-&gt;post_name = wp_unique_post_slug(
				$prepared_post-&gt;post_name,
				$prepared_post-&gt;id,
				&#039;publish&#039;,
				$prepared_post-&gt;post_type,
				$prepared_post-&gt;post_parent
			);
		}

		$post_id = wp_insert_post( wp_slash( (array) $prepared_post ), true, false );

		if ( is_wp_error( $post_id ) ) {

			if ( &#039;db_insert_error&#039; === $post_id-&gt;get_error_code() ) {
				$post_id-&gt;add_data( array( &#039;status&#039; =&gt; 500 ) );
			} else {
				$post_id-&gt;add_data( array( &#039;status&#039; =&gt; 400 ) );
			}

			return $post_id;
		}

		$post = get_post( $post_id );

		/**
		 * Fires after a single post is created or updated via the REST API.
		 *
		 * The dynamic portion of the hook name, `$this-&gt;post_type`, refers to the post type slug.
		 *
		 * Possible hook names include:
		 *
		 *  - `rest_insert_post`
		 *  - `rest_insert_page`
		 *  - `rest_insert_attachment`
		 *
		 * @since 4.7.0
		 *
		 * @param WP_Post         $post     Inserted or updated post object.
		 * @param WP_REST_Request $request  Request object.
		 * @param bool            $creating True when creating a post, false when updating.
		 */
		do_action( &quot;rest_insert_{$this-&gt;post_type}&quot;, $post, $request, true );

		$schema = $this-&gt;get_item_schema();

		if ( ! empty( $schema[&#039;properties&#039;][&#039;sticky&#039;] ) ) {
			if ( ! empty( $request[&#039;sticky&#039;] ) ) {
				stick_post( $post_id );
			} else {
				unstick_post( $post_id );
			}
		}

		if ( ! empty( $schema[&#039;properties&#039;][&#039;featured_media&#039;] ) &amp;&amp; isset( $request[&#039;featured_media&#039;] ) ) {
			$this-&gt;handle_featured_media( $request[&#039;featured_media&#039;], $post_id );
		}

		if ( ! empty( $schema[&#039;properties&#039;][&#039;format&#039;] ) &amp;&amp; ! empty( $request[&#039;format&#039;] ) ) {
			set_post_format( $post, $request[&#039;format&#039;] );
		}

		if ( ! empty( $schema[&#039;properties&#039;][&#039;template&#039;] ) &amp;&amp; isset( $request[&#039;template&#039;] ) ) {
			$this-&gt;handle_template( $request[&#039;template&#039;], $post_id, true );
		}

		$terms_update = $this-&gt;handle_terms( $post_id, $request );

		if ( is_wp_error( $terms_update ) ) {
			return $terms_update;
		}

		if ( ! empty( $schema[&#039;properties&#039;][&#039;meta&#039;] ) &amp;&amp; isset( $request[&#039;meta&#039;] ) ) {
			$meta_update = $this-&gt;meta-&gt;update_value( $request[&#039;meta&#039;], $post_id );

			if ( is_wp_error( $meta_update ) ) {
				return $meta_update;
			}
		}

		$post          = get_post( $post_id );
		$fields_update = $this-&gt;update_additional_fields_for_object( $post, $request );

		if ( is_wp_error( $fields_update ) ) {
			return $fields_update;
		}

		$request-&gt;set_param( &#039;context&#039;, &#039;edit&#039; );

		/**
		 * Fires after a single post is completely created or updated via the REST API.
		 *
		 * The dynamic portion of the hook name, `$this-&gt;post_type`, refers to the post type slug.
		 *
		 * Possible hook names include:
		 *
		 *  - `rest_after_insert_post`
		 *  - `rest_after_insert_page`
		 *  - `rest_after_insert_attachment`
		 *
		 * @since 5.0.0
		 *
		 * @param WP_Post         $post     Inserted or updated post object.
		 * @param WP_REST_Request $request  Request object.
		 * @param bool            $creating True when creating a post, false when updating.
		 */
		do_action( &quot;rest_after_insert_{$this-&gt;post_type}&quot;, $post, $request, true );

		wp_after_insert_post( $post, false, null );

		$response = $this-&gt;prepare_item_for_response( $post, $request );
		$response = rest_ensure_response( $response );

		$response-&gt;set_status( 201 );
		$response-&gt;header( &#039;Location&#039;, rest_url( rest_get_route_for_post( $post ) ) );

		return $response;
	}

	/**
	 * Checks if a given request has access to update a post.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return true|WP_Error True if the request has access to update the item, WP_Error object otherwise.
	 */
	public function update_item_permissions_check( $request ) {
		$post = $this-&gt;get_post( $request[&#039;id&#039;] );
		if ( is_wp_error( $post ) ) {
			return $post;
		}

		$post_type = get_post_type_object( $this-&gt;post_type );

		if ( $post &amp;&amp; ! $this-&gt;check_update_permission( $post ) ) {
			return new WP_Error(
				&#039;rest_cannot_edit&#039;,
				__( &#039;Sorry, you are not allowed to edit this post.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		if ( ! empty( $request[&#039;author&#039;] ) &amp;&amp; get_current_user_id() !== $request[&#039;author&#039;] &amp;&amp; ! current_user_can( $post_type-&gt;cap-&gt;edit_others_posts ) ) {
			return new WP_Error(
				&#039;rest_cannot_edit_others&#039;,
				__( &#039;Sorry, you are not allowed to update posts as this user.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		if ( ! empty( $request[&#039;sticky&#039;] ) &amp;&amp; ! current_user_can( $post_type-&gt;cap-&gt;edit_others_posts ) &amp;&amp; ! current_user_can( $post_type-&gt;cap-&gt;publish_posts ) ) {
			return new WP_Error(
				&#039;rest_cannot_assign_sticky&#039;,
				__( &#039;Sorry, you are not allowed to make posts sticky.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		if ( ! $this-&gt;check_assign_terms_permission( $request ) ) {
			return new WP_Error(
				&#039;rest_cannot_assign_term&#039;,
				__( &#039;Sorry, you are not allowed to assign the provided terms.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		return true;
	}

	/**
	 * Updates a single post.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
	 */
	public function update_item( $request ) {
		$valid_check = $this-&gt;get_post( $request[&#039;id&#039;] );
		if ( is_wp_error( $valid_check ) ) {
			return $valid_check;
		}

		$post_before = get_post( $request[&#039;id&#039;] );
		$post        = $this-&gt;prepare_item_for_database( $request );

		if ( is_wp_error( $post ) ) {
			return $post;
		}

		if ( ! empty( $post-&gt;post_status ) ) {
			$post_status = $post-&gt;post_status;
		} else {
			$post_status = $post_before-&gt;post_status;
		}

		/*
		 * `wp_unique_post_slug()` returns the same slug for &#039;draft&#039; or &#039;pending&#039; posts.
		 *
		 * To ensure that a unique slug is generated, pass the post data with the &#039;publish&#039; status.
		 */
		if ( ! empty( $post-&gt;post_name ) &amp;&amp; in_array( $post_status, array( &#039;draft&#039;, &#039;pending&#039; ), true ) ) {
			$post_parent     = ! empty( $post-&gt;post_parent ) ? $post-&gt;post_parent : 0;
			$post-&gt;post_name = wp_unique_post_slug(
				$post-&gt;post_name,
				$post-&gt;ID,
				&#039;publish&#039;,
				$post-&gt;post_type,
				$post_parent
			);
		}

		// Convert the post object to an array, otherwise wp_update_post() will expect non-escaped input.
		$post_id = wp_update_post( wp_slash( (array) $post ), true, false );

		if ( is_wp_error( $post_id ) ) {
			if ( &#039;db_update_error&#039; === $post_id-&gt;get_error_code() ) {
				$post_id-&gt;add_data( array( &#039;status&#039; =&gt; 500 ) );
			} else {
				$post_id-&gt;add_data( array( &#039;status&#039; =&gt; 400 ) );
			}
			return $post_id;
		}

		$post = get_post( $post_id );

		/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php */
		do_action( &quot;rest_insert_{$this-&gt;post_type}&quot;, $post, $request, false );

		$schema = $this-&gt;get_item_schema();

		if ( ! empty( $schema[&#039;properties&#039;][&#039;format&#039;] ) &amp;&amp; ! empty( $request[&#039;format&#039;] ) ) {
			set_post_format( $post, $request[&#039;format&#039;] );
		}

		if ( ! empty( $schema[&#039;properties&#039;][&#039;featured_media&#039;] ) &amp;&amp; isset( $request[&#039;featured_media&#039;] ) ) {
			$this-&gt;handle_featured_media( $request[&#039;featured_media&#039;], $post_id );
		}

		if ( ! empty( $schema[&#039;properties&#039;][&#039;sticky&#039;] ) &amp;&amp; isset( $request[&#039;sticky&#039;] ) ) {
			if ( ! empty( $request[&#039;sticky&#039;] ) ) {
				stick_post( $post_id );
			} else {
				unstick_post( $post_id );
			}
		}

		if ( ! empty( $schema[&#039;properties&#039;][&#039;template&#039;] ) &amp;&amp; isset( $request[&#039;template&#039;] ) ) {
			$this-&gt;handle_template( $request[&#039;template&#039;], $post-&gt;ID );
		}

		$terms_update = $this-&gt;handle_terms( $post-&gt;ID, $request );

		if ( is_wp_error( $terms_update ) ) {
			return $terms_update;
		}

		if ( ! empty( $schema[&#039;properties&#039;][&#039;meta&#039;] ) &amp;&amp; isset( $request[&#039;meta&#039;] ) ) {
			$meta_update = $this-&gt;meta-&gt;update_value( $request[&#039;meta&#039;], $post-&gt;ID );

			if ( is_wp_error( $meta_update ) ) {
				return $meta_update;
			}
		}

		$post          = get_post( $post_id );
		$fields_update = $this-&gt;update_additional_fields_for_object( $post, $request );

		if ( is_wp_error( $fields_update ) ) {
			return $fields_update;
		}

		$request-&gt;set_param( &#039;context&#039;, &#039;edit&#039; );

		// Filter is fired in WP_REST_Attachments_Controller subclass.
		if ( &#039;attachment&#039; === $this-&gt;post_type ) {
			$response = $this-&gt;prepare_item_for_response( $post, $request );
			return rest_ensure_response( $response );
		}

		/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php */
		do_action( &quot;rest_after_insert_{$this-&gt;post_type}&quot;, $post, $request, false );

		wp_after_insert_post( $post, true, $post_before );

		$response = $this-&gt;prepare_item_for_response( $post, $request );

		return rest_ensure_response( $response );
	}

	/**
	 * Checks if a given request has access to delete a post.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return true|WP_Error True if the request has access to delete the item, WP_Error object otherwise.
	 */
	public function delete_item_permissions_check( $request ) {
		$post = $this-&gt;get_post( $request[&#039;id&#039;] );
		if ( is_wp_error( $post ) ) {
			return $post;
		}

		if ( $post &amp;&amp; ! $this-&gt;check_delete_permission( $post ) ) {
			return new WP_Error(
				&#039;rest_cannot_delete&#039;,
				__( &#039;Sorry, you are not allowed to delete this post.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		return true;
	}

	/**
	 * Deletes a single post.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
	 */
	public function delete_item( $request ) {
		$post = $this-&gt;get_post( $request[&#039;id&#039;] );
		if ( is_wp_error( $post ) ) {
			return $post;
		}

		$id    = $post-&gt;ID;
		$force = (bool) $request[&#039;force&#039;];

		$supports_trash = ( EMPTY_TRASH_DAYS &gt; 0 );

		if ( &#039;attachment&#039; === $post-&gt;post_type ) {
			$supports_trash = $supports_trash &amp;&amp; MEDIA_TRASH;
		}

		/**
		 * Filters whether a post is trashable.
		 *
		 * The dynamic portion of the hook name, `$this-&gt;post_type`, refers to the post type slug.
		 *
		 * Possible hook names include:
		 *
		 *  - `rest_post_trashable`
		 *  - `rest_page_trashable`
		 *  - `rest_attachment_trashable`
		 *
		 * Pass false to disable Trash support for the post.
		 *
		 * @since 4.7.0
		 *
		 * @param bool    $supports_trash Whether the post type support trashing.
		 * @param WP_Post $post           The Post object being considered for trashing support.
		 */
		$supports_trash = apply_filters( &quot;rest_{$this-&gt;post_type}_trashable&quot;, $supports_trash, $post );

		if ( ! $this-&gt;check_delete_permission( $post ) ) {
			return new WP_Error(
				&#039;rest_user_cannot_delete_post&#039;,
				__( &#039;Sorry, you are not allowed to delete this post.&#039; ),
				array( &#039;status&#039; =&gt; rest_authorization_required_code() )
			);
		}

		$request-&gt;set_param( &#039;context&#039;, &#039;edit&#039; );

		// If we&#039;re forcing, then delete permanently.
		if ( $force ) {
			$previous = $this-&gt;prepare_item_for_response( $post, $request );
			$result   = wp_delete_post( $id, true );
			$response = new WP_REST_Response();
			$response-&gt;set_data(
				array(
					&#039;deleted&#039;  =&gt; true,
					&#039;previous&#039; =&gt; $previous-&gt;get_data(),
				)
			);
		} else {
			// If we don&#039;t support trashing for this type, error out.
			if ( ! $supports_trash ) {
				return new WP_Error(
					&#039;rest_trash_not_supported&#039;,
					/* translators: %s: force=true */
					sprintf( __( &quot;The post does not support trashing. Set &#039;%s&#039; to delete.&quot; ), &#039;force=true&#039; ),
					array( &#039;status&#039; =&gt; 501 )
				);
			}

			// Otherwise, only trash if we haven&#039;t already.
			if ( &#039;trash&#039; === $post-&gt;post_status ) {
				return new WP_Error(
					&#039;rest_already_trashed&#039;,
					__( &#039;The post has already been deleted.&#039; ),
					array( &#039;status&#039; =&gt; 410 )
				);
			}

			/*
			 * (Note that internally this falls through to `wp_delete_post()`
			 * if the Trash is disabled.)
			 */
			$result   = wp_trash_post( $id );
			$post     = get_post( $id );
			$response = $this-&gt;prepare_item_for_response( $post, $request );
		}

		if ( ! $result ) {
			return new WP_Error(
				&#039;rest_cannot_delete&#039;,
				__( &#039;The post cannot be deleted.&#039; ),
				array( &#039;status&#039; =&gt; 500 )
			);
		}

		/**
		 * Fires immediately after a single post is deleted or trashed via the REST API.
		 *
		 * They dynamic portion of the hook name, `$this-&gt;post_type`, refers to the post type slug.
		 *
		 * Possible hook names include:
		 *
		 *  - `rest_delete_post`
		 *  - `rest_delete_page`
		 *  - `rest_delete_attachment`
		 *
		 * @since 4.7.0
		 *
		 * @param WP_Post          $post     The deleted or trashed post.
		 * @param WP_REST_Response $response The response data.
		 * @param WP_REST_Request  $request  The request sent to the API.
		 */
		do_action( &quot;rest_delete_{$this-&gt;post_type}&quot;, $post, $response, $request );

		return $response;
	}

	/**
	 * Determines the allowed query_vars for a get_items() response and prepares
	 * them for WP_Query.
	 *
	 * @since 4.7.0
	 *
	 * @param array           $prepared_args Optional. Prepared WP_Query arguments. Default empty array.
	 * @param WP_REST_Request $request       Optional. Full details about the request.
	 * @return array Items query arguments.
	 */
	protected function prepare_items_query( $prepared_args = array(), $request = null ) {
		$query_args = array();

		foreach ( $prepared_args as $key =&gt; $value ) {
			/**
			 * Filters the query_vars used in get_items() for the constructed query.
			 *
			 * The dynamic portion of the hook name, `$key`, refers to the query_var key.
			 *
			 * @since 4.7.0
			 *
			 * @param string $value The query_var value.
			 */
			$query_args[ $key ] = apply_filters( &quot;rest_query_var-{$key}&quot;, $value ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
		}

		if ( &#039;post&#039; !== $this-&gt;post_type || ! isset( $query_args[&#039;ignore_sticky_posts&#039;] ) ) {
			$query_args[&#039;ignore_sticky_posts&#039;] = true;
		}

		// Map to proper WP_Query orderby param.
		if ( isset( $query_args[&#039;orderby&#039;] ) &amp;&amp; isset( $request[&#039;orderby&#039;] ) ) {
			$orderby_mappings = array(
				&#039;id&#039;            =&gt; &#039;ID&#039;,
				&#039;include&#039;       =&gt; &#039;post__in&#039;,
				&#039;slug&#039;          =&gt; &#039;post_name&#039;,
				&#039;include_slugs&#039; =&gt; &#039;post_name__in&#039;,
			);

			if ( isset( $orderby_mappings[ $request[&#039;orderby&#039;] ] ) ) {
				$query_args[&#039;orderby&#039;] = $orderby_mappings[ $request[&#039;orderby&#039;] ];
			}
		}

		return $query_args;
	}

	/**
	 * Checks the post_date_gmt or modified_gmt and prepare any post or
	 * modified date for single post output.
	 *
	 * @since 4.7.0
	 *
	 * @param string      $date_gmt GMT publication time.
	 * @param string|null $date     Optional. Local publication time. Default null.
	 * @return string|null ISO8601/RFC3339 formatted datetime.
	 */
	protected function prepare_date_response( $date_gmt, $date = null ) {
		// Use the date if passed.
		if ( isset( $date ) ) {
			return mysql_to_rfc3339( $date );
		}

		// Return null if $date_gmt is empty/zeros.
		if ( &#039;0000-00-00 00:00:00&#039; === $date_gmt ) {
			return null;
		}

		// Return the formatted datetime.
		return mysql_to_rfc3339( $date_gmt );
	}

	/**
	 * Prepares a single post for create or update.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Request object.
	 * @return stdClass|WP_Error Post object or WP_Error.
	 */
	protected function prepare_item_for_database( $request ) {
		$prepared_post  = new stdClass();
		$current_status = &#039;&#039;;

		// Post ID.
		if ( isset( $request[&#039;id&#039;] ) ) {
			$existing_post = $this-&gt;get_post( $request[&#039;id&#039;] );
			if ( is_wp_error( $existing_post ) ) {
				return $existing_post;
			}

			$prepared_post-&gt;ID = $existing_post-&gt;ID;
			$current_status    = $existing_post-&gt;post_status;
		}

		$schema = $this-&gt;get_item_schema();

		// Post title.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;title&#039;] ) &amp;&amp; isset( $request[&#039;title&#039;] ) ) {
			if ( is_string( $request[&#039;title&#039;] ) ) {
				$prepared_post-&gt;post_title = $request[&#039;title&#039;];
			} elseif ( ! empty( $request[&#039;title&#039;][&#039;raw&#039;] ) ) {
				$prepared_post-&gt;post_title = $request[&#039;title&#039;][&#039;raw&#039;];
			}
		}

		// Post content.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;content&#039;] ) &amp;&amp; isset( $request[&#039;content&#039;] ) ) {
			if ( is_string( $request[&#039;content&#039;] ) ) {
				$prepared_post-&gt;post_content = $request[&#039;content&#039;];
			} elseif ( isset( $request[&#039;content&#039;][&#039;raw&#039;] ) ) {
				$prepared_post-&gt;post_content = $request[&#039;content&#039;][&#039;raw&#039;];
			}
		}

		// Post excerpt.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;excerpt&#039;] ) &amp;&amp; isset( $request[&#039;excerpt&#039;] ) ) {
			if ( is_string( $request[&#039;excerpt&#039;] ) ) {
				$prepared_post-&gt;post_excerpt = $request[&#039;excerpt&#039;];
			} elseif ( isset( $request[&#039;excerpt&#039;][&#039;raw&#039;] ) ) {
				$prepared_post-&gt;post_excerpt = $request[&#039;excerpt&#039;][&#039;raw&#039;];
			}
		}

		// Post type.
		if ( empty( $request[&#039;id&#039;] ) ) {
			// Creating new post, use default type for the controller.
			$prepared_post-&gt;post_type = $this-&gt;post_type;
		} else {
			// Updating a post, use previous type.
			$prepared_post-&gt;post_type = get_post_type( $request[&#039;id&#039;] );
		}

		$post_type = get_post_type_object( $prepared_post-&gt;post_type );

		// Post status.
		if (
			! empty( $schema[&#039;properties&#039;][&#039;status&#039;] ) &amp;&amp;
			isset( $request[&#039;status&#039;] ) &amp;&amp;
			( ! $current_status || $current_status !== $request[&#039;status&#039;] )
		) {
			$status = $this-&gt;handle_status_param( $request[&#039;status&#039;], $post_type );

			if ( is_wp_error( $status ) ) {
				return $status;
			}

			$prepared_post-&gt;post_status = $status;
		}

		// Post date.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;date&#039;] ) &amp;&amp; ! empty( $request[&#039;date&#039;] ) ) {
			$current_date = isset( $prepared_post-&gt;ID ) ? get_post( $prepared_post-&gt;ID )-&gt;post_date : false;
			$date_data    = rest_get_date_with_gmt( $request[&#039;date&#039;] );

			if ( ! empty( $date_data ) &amp;&amp; $current_date !== $date_data[0] ) {
				list( $prepared_post-&gt;post_date, $prepared_post-&gt;post_date_gmt ) = $date_data;
				$prepared_post-&gt;edit_date                                        = true;
			}
		} elseif ( ! empty( $schema[&#039;properties&#039;][&#039;date_gmt&#039;] ) &amp;&amp; ! empty( $request[&#039;date_gmt&#039;] ) ) {
			$current_date = isset( $prepared_post-&gt;ID ) ? get_post( $prepared_post-&gt;ID )-&gt;post_date_gmt : false;
			$date_data    = rest_get_date_with_gmt( $request[&#039;date_gmt&#039;], true );

			if ( ! empty( $date_data ) &amp;&amp; $current_date !== $date_data[1] ) {
				list( $prepared_post-&gt;post_date, $prepared_post-&gt;post_date_gmt ) = $date_data;
				$prepared_post-&gt;edit_date                                        = true;
			}
		}

		/*
		 * Sending a null date or date_gmt value resets date and date_gmt to their
		 * default values (`0000-00-00 00:00:00`).
		 */
		if (
			( ! empty( $schema[&#039;properties&#039;][&#039;date_gmt&#039;] ) &amp;&amp; $request-&gt;has_param( &#039;date_gmt&#039; ) &amp;&amp; null === $request[&#039;date_gmt&#039;] ) ||
			( ! empty( $schema[&#039;properties&#039;][&#039;date&#039;] ) &amp;&amp; $request-&gt;has_param( &#039;date&#039; ) &amp;&amp; null === $request[&#039;date&#039;] )
		) {
			$prepared_post-&gt;post_date_gmt = null;
			$prepared_post-&gt;post_date     = null;
		}

		// Post slug.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;slug&#039;] ) &amp;&amp; isset( $request[&#039;slug&#039;] ) ) {
			$prepared_post-&gt;post_name = $request[&#039;slug&#039;];
		}

		// Author.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;author&#039;] ) &amp;&amp; ! empty( $request[&#039;author&#039;] ) ) {
			$post_author = (int) $request[&#039;author&#039;];

			if ( get_current_user_id() !== $post_author ) {
				$user_obj = get_userdata( $post_author );

				if ( ! $user_obj ) {
					return new WP_Error(
						&#039;rest_invalid_author&#039;,
						__( &#039;Invalid author ID.&#039; ),
						array( &#039;status&#039; =&gt; 400 )
					);
				}
			}

			$prepared_post-&gt;post_author = $post_author;
		}

		// Post password.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;password&#039;] ) &amp;&amp; isset( $request[&#039;password&#039;] ) ) {
			$prepared_post-&gt;post_password = $request[&#039;password&#039;];

			if ( &#039;&#039; !== $request[&#039;password&#039;] ) {
				if ( ! empty( $schema[&#039;properties&#039;][&#039;sticky&#039;] ) &amp;&amp; ! empty( $request[&#039;sticky&#039;] ) ) {
					return new WP_Error(
						&#039;rest_invalid_field&#039;,
						__( &#039;A post can not be sticky and have a password.&#039; ),
						array( &#039;status&#039; =&gt; 400 )
					);
				}

				if ( ! empty( $prepared_post-&gt;ID ) &amp;&amp; is_sticky( $prepared_post-&gt;ID ) ) {
					return new WP_Error(
						&#039;rest_invalid_field&#039;,
						__( &#039;A sticky post can not be password protected.&#039; ),
						array( &#039;status&#039; =&gt; 400 )
					);
				}
			}
		}

		if ( ! empty( $schema[&#039;properties&#039;][&#039;sticky&#039;] ) &amp;&amp; ! empty( $request[&#039;sticky&#039;] ) ) {
			if ( ! empty( $prepared_post-&gt;ID ) &amp;&amp; post_password_required( $prepared_post-&gt;ID ) ) {
				return new WP_Error(
					&#039;rest_invalid_field&#039;,
					__( &#039;A password protected post can not be set to sticky.&#039; ),
					array( &#039;status&#039; =&gt; 400 )
				);
			}
		}

		// Parent.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;parent&#039;] ) &amp;&amp; isset( $request[&#039;parent&#039;] ) ) {
			if ( 0 === (int) $request[&#039;parent&#039;] ) {
				$prepared_post-&gt;post_parent = 0;
			} else {
				$parent = get_post( (int) $request[&#039;parent&#039;] );

				if ( empty( $parent ) ) {
					return new WP_Error(
						&#039;rest_post_invalid_id&#039;,
						__( &#039;Invalid post parent ID.&#039; ),
						array( &#039;status&#039; =&gt; 400 )
					);
				}

				$prepared_post-&gt;post_parent = (int) $parent-&gt;ID;
			}
		}

		// Menu order.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;menu_order&#039;] ) &amp;&amp; isset( $request[&#039;menu_order&#039;] ) ) {
			$prepared_post-&gt;menu_order = (int) $request[&#039;menu_order&#039;];
		}

		// Comment status.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;comment_status&#039;] ) &amp;&amp; ! empty( $request[&#039;comment_status&#039;] ) ) {
			$prepared_post-&gt;comment_status = $request[&#039;comment_status&#039;];
		}

		// Ping status.
		if ( ! empty( $schema[&#039;properties&#039;][&#039;ping_status&#039;] ) &amp;&amp; ! empty( $request[&#039;ping_status&#039;] ) ) {
			$prepared_post-&gt;ping_status = $request[&#039;ping_status&#039;];
		}

		if ( ! empty( $schema[&#039;properties&#039;][&#039;template&#039;] ) ) {
			// Force template to null so that it can be handled exclusively by the REST controller.
			$prepared_post-&gt;page_template = null;
		}

		/**
		 * Filters a post before it is inserted via the REST API.
		 *
		 * The dynamic portion of the hook name, `$this-&gt;post_type`, refers to the post type slug.
		 *
		 * Possible hook names include:
		 *
		 *  - `rest_pre_insert_post`
		 *  - `rest_pre_insert_page`
		 *  - `rest_pre_insert_attachment`
		 *
		 * @since 4.7.0
		 *
		 * @param stdClass        $prepared_post An object representing a single post prepared
		 *                                       for inserting or updating the database.
		 * @param WP_REST_Request $request       Request object.
		 */
		return apply_filters( &quot;rest_pre_insert_{$this-&gt;post_type}&quot;, $prepared_post, $request );
	}

	/**
	 * Checks whether the status is valid for the given post.
	 *
	 * Allows for sending an update request with the current status, even if that status would not be acceptable.
	 *
	 * @since 5.6.0
	 *
	 * @param string          $status  The provided status.
	 * @param WP_REST_Request $request The request object.
	 * @param string          $param   The parameter name.
	 * @return true|WP_Error True if the status is valid, or WP_Error if not.
	 */
	public function check_status( $status, $request, $param ) {
		if ( $request[&#039;id&#039;] ) {
			$post = $this-&gt;get_post( $request[&#039;id&#039;] );

			if ( ! is_wp_error( $post ) &amp;&amp; $post-&gt;post_status === $status ) {
				return true;
			}
		}

		$args = $request-&gt;get_attributes()[&#039;args&#039;][ $param ];

		return rest_validate_value_from_schema( $status, $args, $param );
	}

	/**
	 * Determines validity and normalizes the given status parameter.
	 *
	 * @since 4.7.0
	 *
	 * @param string       $post_status Post status.
	 * @param WP_Post_Type $post_type   Post type.
	 * @return string|WP_Error Post status or WP_Error if lacking the proper permission.
	 */
	protected function handle_status_param( $post_status, $post_type ) {

		switch ( $post_status ) {
			case &#039;draft&#039;:
			case &#039;pending&#039;:
				break;
			case &#039;private&#039;:
				if ( ! current_user_can( $post_type-&gt;cap-&gt;publish_posts ) ) {
					return new WP_Error(
						&#039;rest_cannot_publish&#039;,
						__( &#039;Sorry, you are not allowed to create private posts in this post type.&#039; ),
						array( &#039;status&#039; =&gt; rest_authorization_required_code() )
					);
				}
				break;
			case &#039;publish&#039;:
			case &#039;future&#039;:
				if ( ! current_user_can( $post_type-&gt;cap-&gt;publish_posts ) ) {
					return new WP_Error(
						&#039;rest_cannot_publish&#039;,
						__( &#039;Sorry, you are not allowed to publish posts in this post type.&#039; ),
						array( &#039;status&#039; =&gt; rest_authorization_required_code() )
					);
				}
				break;
			default:
				if ( ! get_post_status_object( $post_status ) ) {
					$post_status = &#039;draft&#039;;
				}
				break;
		}

		return $post_status;
	}

	/**
	 * Determines the featured media based on a request param.
	 *
	 * @since 4.7.0
	 *
	 * @param int $featured_media Featured Media ID.
	 * @param int $post_id        Post ID.
	 * @return bool|WP_Error Whether the post thumbnail was successfully deleted, otherwise WP_Error.
	 */
	protected function handle_featured_media( $featured_media, $post_id ) {

		$featured_media = (int) $featured_media;
		if ( $featured_media ) {
			$result = set_post_thumbnail( $post_id, $featured_media );
			if ( $result ) {
				return true;
			} else {
				return new WP_Error(
					&#039;rest_invalid_featured_media&#039;,
					__( &#039;Invalid featured media ID.&#039; ),
					array( &#039;status&#039; =&gt; 400 )
				);
			}
		} else {
			return delete_post_thumbnail( $post_id );
		}
	}

	/**
	 * Checks whether the template is valid for the given post.
	 *
	 * @since 4.9.0
	 *
	 * @param string          $template Page template filename.
	 * @param WP_REST_Request $request  Request.
	 * @return true|WP_Error True if template is still valid or if the same as existing value, or a WP_Error if template not supported.
	 */
	public function check_template( $template, $request ) {

		if ( ! $template ) {
			return true;
		}

		if ( $request[&#039;id&#039;] ) {
			$post             = get_post( $request[&#039;id&#039;] );
			$current_template = get_page_template_slug( $request[&#039;id&#039;] );
		} else {
			$post             = null;
			$current_template = &#039;&#039;;
		}

		// Always allow for updating a post to the same template, even if that template is no longer supported.
		if ( $template === $current_template ) {
			return true;
		}

		// If this is a create request, get_post() will return null and wp theme will fallback to the passed post type.
		$allowed_templates = wp_get_theme()-&gt;get_page_templates( $post, $this-&gt;post_type );

		if ( isset( $allowed_templates[ $template ] ) ) {
			return true;
		}

		return new WP_Error(
			&#039;rest_invalid_param&#039;,
			/* translators: 1: Parameter, 2: List of valid values. */
			sprintf( __( &#039;%1$s is not one of %2$s.&#039; ), &#039;template&#039;, implode( &#039;, &#039;, array_keys( $allowed_templates ) ) )
		);
	}

	/**
	 * Sets the template for a post.
	 *
	 * @since 4.7.0
	 * @since 4.9.0 Added the `$validate` parameter.
	 *
	 * @param string $template Page template filename.
	 * @param int    $post_id  Post ID.
	 * @param bool   $validate Whether to validate that the template selected is valid.
	 */
	public function handle_template( $template, $post_id, $validate = false ) {

		if ( $validate &amp;&amp; ! array_key_exists( $template, wp_get_theme()-&gt;get_page_templates( get_post( $post_id ) ) ) ) {
			$template = &#039;&#039;;
		}

		update_post_meta( $post_id, &#039;_wp_page_template&#039;, $template );
	}

	/**
	 * Updates the post&#039;s terms from a REST request.
	 *
	 * @since 4.7.0
	 *
	 * @param int             $post_id The post ID to update the terms form.
	 * @param WP_REST_Request $request The request object with post and terms data.
	 * @return null|WP_Error WP_Error on an error assigning any of the terms, otherwise null.
	 */
	protected function handle_terms( $post_id, $request ) {
		$taxonomies = wp_list_filter( get_object_taxonomies( $this-&gt;post_type, &#039;objects&#039; ), array( &#039;show_in_rest&#039; =&gt; true ) );

		foreach ( $taxonomies as $taxonomy ) {
			$base = ! empty( $taxonomy-&gt;rest_base ) ? $taxonomy-&gt;rest_base : $taxonomy-&gt;name;

			if ( ! isset( $request[ $base ] ) ) {
				continue;
			}

			$result = wp_set_object_terms( $post_id, $request[ $base ], $taxonomy-&gt;name );

			if ( is_wp_error( $result ) ) {
				return $result;
			}
		}

		return null;
	}

	/**
	 * Checks whether current user can assign all terms sent with the current request.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request The request object with post and terms data.
	 * @return bool Whether the current user can assign the provided terms.
	 */
	protected function check_assign_terms_permission( $request ) {
		$taxonomies = wp_list_filter( get_object_taxonomies( $this-&gt;post_type, &#039;objects&#039; ), array( &#039;show_in_rest&#039; =&gt; true ) );
		foreach ( $taxonomies as $taxonomy ) {
			$base = ! empty( $taxonomy-&gt;rest_base ) ? $taxonomy-&gt;rest_base : $taxonomy-&gt;name;

			if ( ! isset( $request[ $base ] ) ) {
				continue;
			}

			foreach ( (array) $request[ $base ] as $term_id ) {
				// Invalid terms will be rejected later.
				if ( ! get_term( $term_id, $taxonomy-&gt;name ) ) {
					continue;
				}

				if ( ! current_user_can( &#039;assign_term&#039;, (int) $term_id ) ) {
					return false;
				}
			}
		}

		return true;
	}

	/**
	 * Checks if a given post type can be viewed or managed.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_Post_Type|string $post_type Post type name or object.
	 * @return bool Whether the post type is allowed in REST.
	 */
	protected function check_is_post_type_allowed( $post_type ) {
		if ( ! is_object( $post_type ) ) {
			$post_type = get_post_type_object( $post_type );
		}

		if ( ! empty( $post_type ) &amp;&amp; ! empty( $post_type-&gt;show_in_rest ) ) {
			return true;
		}

		return false;
	}

	/**
	 * Checks if a post can be read.
	 *
	 * Correctly handles posts with the inherit status.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_Post $post Post object.
	 * @return bool Whether the post can be read.
	 */
	public function check_read_permission( $post ) {
		$post_type = get_post_type_object( $post-&gt;post_type );
		if ( ! $this-&gt;check_is_post_type_allowed( $post_type ) ) {
			return false;
		}

		// Is the post readable?
		if ( &#039;publish&#039; === $post-&gt;post_status || current_user_can( &#039;read_post&#039;, $post-&gt;ID ) ) {
			return true;
		}

		$post_status_obj = get_post_status_object( $post-&gt;post_status );
		if ( $post_status_obj &amp;&amp; $post_status_obj-&gt;public ) {
			return true;
		}

		// Can we read the parent if we&#039;re inheriting?
		if ( &#039;inherit&#039; === $post-&gt;post_status &amp;&amp; $post-&gt;post_parent &gt; 0 ) {
			$parent = get_post( $post-&gt;post_parent );
			if ( $parent ) {
				return $this-&gt;check_read_permission( $parent );
			}
		}

		/*
		 * If there isn&#039;t a parent, but the status is set to inherit, assume
		 * it&#039;s published (as per get_post_status()).
		 */
		if ( &#039;inherit&#039; === $post-&gt;post_status ) {
			return true;
		}

		return false;
	}

	/**
	 * Checks if a post can be edited.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_Post $post Post object.
	 * @return bool Whether the post can be edited.
	 */
	protected function check_update_permission( $post ) {
		$post_type = get_post_type_object( $post-&gt;post_type );

		if ( ! $this-&gt;check_is_post_type_allowed( $post_type ) ) {
			return false;
		}

		return current_user_can( &#039;edit_post&#039;, $post-&gt;ID );
	}

	/**
	 * Checks if a post can be created.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_Post $post Post object.
	 * @return bool Whether the post can be created.
	 */
	protected function check_create_permission( $post ) {
		$post_type = get_post_type_object( $post-&gt;post_type );

		if ( ! $this-&gt;check_is_post_type_allowed( $post_type ) ) {
			return false;
		}

		return current_user_can( $post_type-&gt;cap-&gt;create_posts );
	}

	/**
	 * Checks if a post can be deleted.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_Post $post Post object.
	 * @return bool Whether the post can be deleted.
	 */
	protected function check_delete_permission( $post ) {
		$post_type = get_post_type_object( $post-&gt;post_type );

		if ( ! $this-&gt;check_is_post_type_allowed( $post_type ) ) {
			return false;
		}

		return current_user_can( &#039;delete_post&#039;, $post-&gt;ID );
	}

	/**
	 * Prepares a single post output for response.
	 *
	 * @since 4.7.0
	 * @since 5.9.0 Renamed `$post` to `$item` to match parent class for PHP 8 named parameter support.
	 *
	 * @global WP_Post $post Global post object.
	 *
	 * @param WP_Post         $item    Post object.
	 * @param WP_REST_Request $request Request object.
	 * @return WP_REST_Response Response object.
	 */
	public function prepare_item_for_response( $item, $request ) {
		// Restores the more descriptive, specific name for use within this method.
		$post = $item;

		$GLOBALS[&#039;post&#039;] = $post;

		setup_postdata( $post );

		// Don&#039;t prepare the response body for HEAD requests.
		if ( $request-&gt;is_method( &#039;HEAD&#039; ) ) {
			/** This filter is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php */
			return apply_filters( &quot;rest_prepare_{$this-&gt;post_type}&quot;, new WP_REST_Response( array() ), $post, $request );
		}

		$fields = $this-&gt;get_fields_for_response( $request );

		// Base fields for every post.
		$data = array();

		if ( rest_is_field_included( &#039;id&#039;, $fields ) ) {
			$data[&#039;id&#039;] = $post-&gt;ID;
		}

		if ( rest_is_field_included( &#039;date&#039;, $fields ) ) {
			$data[&#039;date&#039;] = $this-&gt;prepare_date_response( $post-&gt;post_date_gmt, $post-&gt;post_date );
		}

		if ( rest_is_field_included( &#039;date_gmt&#039;, $fields ) ) {
			/*
			 * For drafts, `post_date_gmt` may not be set, indicating that the date
			 * of the draft should be updated each time it is saved (see #38883).
			 * In this case, shim the value based on the `post_date` field
			 * with the site&#039;s timezone offset applied.
			 */
			if ( &#039;0000-00-00 00:00:00&#039; === $post-&gt;post_date_gmt ) {
				$post_date_gmt = get_gmt_from_date( $post-&gt;post_date );
			} else {
				$post_date_gmt = $post-&gt;post_date_gmt;
			}
			$data[&#039;date_gmt&#039;] = $this-&gt;prepare_date_response( $post_date_gmt );
		}

		if ( rest_is_field_included( &#039;guid&#039;, $fields ) ) {
			$data[&#039;guid&#039;] = array(
				/** This filter is documented in wp-includes/post-template.php */
				&#039;rendered&#039; =&gt; apply_filters( &#039;get_the_guid&#039;, $post-&gt;guid, $post-&gt;ID ),
				&#039;raw&#039;      =&gt; $post-&gt;guid,
			);
		}

		if ( rest_is_field_included( &#039;modified&#039;, $fields ) ) {
			$data[&#039;modified&#039;] = $this-&gt;prepare_date_response( $post-&gt;post_modified_gmt, $post-&gt;post_modified );
		}

		if ( rest_is_field_included( &#039;modified_gmt&#039;, $fields ) ) {
			/*
			 * For drafts, `post_modified_gmt` may not be set (see `post_date_gmt` comments
			 * above). In this case, shim the value based on the `post_modified` field
			 * with the site&#039;s timezone offset applied.
			 */
			if ( &#039;0000-00-00 00:00:00&#039; === $post-&gt;post_modified_gmt ) {
				$post_modified_gmt = gmdate( &#039;Y-m-d H:i:s&#039;, strtotime( $post-&gt;post_modified ) - (int) ( (float) get_option( &#039;gmt_offset&#039; ) * HOUR_IN_SECONDS ) );
			} else {
				$post_modified_gmt = $post-&gt;post_modified_gmt;
			}
			$data[&#039;modified_gmt&#039;] = $this-&gt;prepare_date_response( $post_modified_gmt );
		}

		if ( rest_is_field_included( &#039;password&#039;, $fields ) ) {
			$data[&#039;password&#039;] = $post-&gt;post_password;
		}

		if ( rest_is_field_included( &#039;slug&#039;, $fields ) ) {
			$data[&#039;slug&#039;] = $post-&gt;post_name;
		}

		if ( rest_is_field_included( &#039;status&#039;, $fields ) ) {
			$data[&#039;status&#039;] = $post-&gt;post_status;
		}

		if ( rest_is_field_included( &#039;type&#039;, $fields ) ) {
			$data[&#039;type&#039;] = $post-&gt;post_type;
		}

		if ( rest_is_field_included( &#039;link&#039;, $fields ) ) {
			$data[&#039;link&#039;] = get_permalink( $post-&gt;ID );
		}

		if ( rest_is_field_included( &#039;title&#039;, $fields ) ) {
			$data[&#039;title&#039;] = array();
		}
		if ( rest_is_field_included( &#039;title.raw&#039;, $fields ) ) {
			$data[&#039;title&#039;][&#039;raw&#039;] = $post-&gt;post_title;
		}
		if ( rest_is_field_included( &#039;title.rendered&#039;, $fields ) ) {
			add_filter( &#039;protected_title_format&#039;, array( $this, &#039;protected_title_format&#039; ) );
			add_filter( &#039;private_title_format&#039;, array( $this, &#039;protected_title_format&#039; ) );

			$data[&#039;title&#039;][&#039;rendered&#039;] = get_the_title( $post-&gt;ID );

			remove_filter( &#039;protected_title_format&#039;, array( $this, &#039;protected_title_format&#039; ) );
			remove_filter( &#039;private_title_format&#039;, array( $this, &#039;protected_title_format&#039; ) );
		}

		$has_password_filter = false;

		if ( $this-&gt;can_access_password_content( $post, $request ) ) {
			$this-&gt;password_check_passed[ $post-&gt;ID ] = true;
			// Allow access to the post, permissions already checked before.
			add_filter( &#039;post_password_required&#039;, array( $this, &#039;check_password_required&#039; ), 10, 2 );

			$has_password_filter = true;
		}

		if ( rest_is_field_included( &#039;content&#039;, $fields ) ) {
			$data[&#039;content&#039;] = array();
		}
		if ( rest_is_field_included( &#039;content.raw&#039;, $fields ) ) {
			$data[&#039;content&#039;][&#039;raw&#039;] = $post-&gt;post_content;
		}
		if ( rest_is_field_included( &#039;content.rendered&#039;, $fields ) ) {
			/** This filter is documented in wp-includes/post-template.php */
			$data[&#039;content&#039;][&#039;rendered&#039;] = post_password_required( $post ) ? &#039;&#039; : apply_filters( &#039;the_content&#039;, $post-&gt;post_content );
		}
		if ( rest_is_field_included( &#039;content.protected&#039;, $fields ) ) {
			$data[&#039;content&#039;][&#039;protected&#039;] = (bool) $post-&gt;post_password;
		}
		if ( rest_is_field_included( &#039;content.block_version&#039;, $fields ) ) {
			$data[&#039;content&#039;][&#039;block_version&#039;] = block_version( $post-&gt;post_content );
		}

		if ( rest_is_field_included( &#039;excerpt&#039;, $fields ) ) {
			if ( isset( $request[&#039;excerpt_length&#039;] ) ) {
				$excerpt_length          = $request[&#039;excerpt_length&#039;];
				$override_excerpt_length = static function () use ( $excerpt_length ) {
					return $excerpt_length;
				};

				add_filter(
					&#039;excerpt_length&#039;,
					$override_excerpt_length,
					20
				);
			}

			/** This filter is documented in wp-includes/post-template.php */
			$excerpt = apply_filters( &#039;get_the_excerpt&#039;, $post-&gt;post_excerpt, $post );

			/** This filter is documented in wp-includes/post-template.php */
			$excerpt = apply_filters( &#039;the_excerpt&#039;, $excerpt );

			$data[&#039;excerpt&#039;] = array(
				&#039;raw&#039;       =&gt; $post-&gt;post_excerpt,
				&#039;rendered&#039;  =&gt; post_password_required( $post ) ? &#039;&#039; : $excerpt,
				&#039;protected&#039; =&gt; (bool) $post-&gt;post_password,
			);

			if ( isset( $override_excerpt_length ) ) {
				remove_filter(
					&#039;excerpt_length&#039;,
					$override_excerpt_length,
					20
				);
			}
		}

		if ( $has_password_filter ) {
			// Reset filter.
			remove_filter( &#039;post_password_required&#039;, array( $this, &#039;check_password_required&#039; ) );
		}

		if ( rest_is_field_included( &#039;author&#039;, $fields ) ) {
			$data[&#039;author&#039;] = (int) $post-&gt;post_author;
		}

		if ( rest_is_field_included( &#039;featured_media&#039;, $fields ) ) {
			$data[&#039;featured_media&#039;] = (int) get_post_thumbnail_id( $post-&gt;ID );
		}

		if ( rest_is_field_included( &#039;parent&#039;, $fields ) ) {
			$data[&#039;parent&#039;] = (int) $post-&gt;post_parent;
		}

		if ( rest_is_field_included( &#039;menu_order&#039;, $fields ) ) {
			$data[&#039;menu_order&#039;] = (int) $post-&gt;menu_order;
		}

		if ( rest_is_field_included( &#039;comment_status&#039;, $fields ) ) {
			$data[&#039;comment_status&#039;] = $post-&gt;comment_status;
		}

		if ( rest_is_field_included( &#039;ping_status&#039;, $fields ) ) {
			$data[&#039;ping_status&#039;] = $post-&gt;ping_status;
		}

		if ( rest_is_field_included( &#039;sticky&#039;, $fields ) ) {
			$data[&#039;sticky&#039;] = is_sticky( $post-&gt;ID );
		}

		if ( rest_is_field_included( &#039;template&#039;, $fields ) ) {
			$template = get_page_template_slug( $post-&gt;ID );
			if ( $template ) {
				$data[&#039;template&#039;] = $template;
			} else {
				$data[&#039;template&#039;] = &#039;&#039;;
			}
		}

		if ( rest_is_field_included( &#039;format&#039;, $fields ) ) {
			$data[&#039;format&#039;] = get_post_format( $post-&gt;ID );

			// Fill in blank post format.
			if ( empty( $data[&#039;format&#039;] ) ) {
				$data[&#039;format&#039;] = &#039;standard&#039;;
			}
		}

		if ( rest_is_field_included( &#039;meta&#039;, $fields ) ) {
			$data[&#039;meta&#039;] = $this-&gt;meta-&gt;get_value( $post-&gt;ID, $request );
		}

		$taxonomies = wp_list_filter( get_object_taxonomies( $this-&gt;post_type, &#039;objects&#039; ), array( &#039;show_in_rest&#039; =&gt; true ) );

		foreach ( $taxonomies as $taxonomy ) {
			$base = ! empty( $taxonomy-&gt;rest_base ) ? $taxonomy-&gt;rest_base : $taxonomy-&gt;name;

			if ( rest_is_field_included( $base, $fields ) ) {
				$terms         = get_the_terms( $post, $taxonomy-&gt;name );
				$data[ $base ] = $terms ? array_values( wp_list_pluck( $terms, &#039;term_id&#039; ) ) : array();
			}
		}

		$post_type_obj = get_post_type_object( $post-&gt;post_type );
		if ( is_post_type_viewable( $post_type_obj ) &amp;&amp; $post_type_obj-&gt;public ) {
			$permalink_template_requested = rest_is_field_included( &#039;permalink_template&#039;, $fields );
			$generated_slug_requested     = rest_is_field_included( &#039;generated_slug&#039;, $fields );

			if ( $permalink_template_requested || $generated_slug_requested ) {
				if ( ! function_exists( &#039;get_sample_permalink&#039; ) ) {
					require_once ABSPATH . &#039;wp-admin/includes/post.php&#039;;
				}

				$sample_permalink = get_sample_permalink( $post-&gt;ID, $post-&gt;post_title, &#039;&#039; );

				if ( $permalink_template_requested ) {
					$data[&#039;permalink_template&#039;] = $sample_permalink[0];
				}

				if ( $generated_slug_requested ) {
					$data[&#039;generated_slug&#039;] = $sample_permalink[1];
				}
			}

			if ( rest_is_field_included( &#039;class_list&#039;, $fields ) ) {
				$data[&#039;class_list&#039;] = get_post_class( array(), $post-&gt;ID );
			}
		}

		$context = ! empty( $request[&#039;context&#039;] ) ? $request[&#039;context&#039;] : &#039;view&#039;;
		$data    = $this-&gt;add_additional_fields_to_object( $data, $request );
		$data    = $this-&gt;filter_response_by_context( $data, $context );

		// Wrap the data in a response object.
		$response = rest_ensure_response( $data );

		if ( rest_is_field_included( &#039;_links&#039;, $fields ) || rest_is_field_included( &#039;_embedded&#039;, $fields ) ) {
			$links = $this-&gt;prepare_links( $post );
			$response-&gt;add_links( $links );

			if ( ! empty( $links[&#039;self&#039;][&#039;href&#039;] ) ) {
				$actions = $this-&gt;get_available_actions( $post, $request );

				$self = $links[&#039;self&#039;][&#039;href&#039;];

				foreach ( $actions as $rel ) {
					$response-&gt;add_link( $rel, $self );
				}
			}
		}

		/**
		 * Filters the post data for a REST API response.
		 *
		 * The dynamic portion of the hook name, `$this-&gt;post_type`, refers to the post type slug.
		 *
		 * Possible hook names include:
		 *
		 *  - `rest_prepare_post`
		 *  - `rest_prepare_page`
		 *  - `rest_prepare_attachment`
		 *
		 * @since 4.7.0
		 *
		 * @param WP_REST_Response $response The response object.
		 * @param WP_Post          $post     Post object.
		 * @param WP_REST_Request  $request  Request object.
		 */
		return apply_filters( &quot;rest_prepare_{$this-&gt;post_type}&quot;, $response, $post, $request );
	}

	/**
	 * Overwrites the default protected and private title format.
	 *
	 * By default, WordPress will show password protected or private posts with a title of
	 * &quot;Protected: %s&quot; or &quot;Private: %s&quot;, as the REST API communicates the status of a post
	 * in a machine-readable format, we remove the prefix.
	 *
	 * @since 4.7.0
	 *
	 * @return string Title format.
	 */
	public function protected_title_format() {
		return &#039;%s&#039;;
	}

	/**
	 * Prepares links for the request.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_Post $post Post object.
	 * @return array Links for the given post.
	 */
	protected function prepare_links( $post ) {
		// Entity meta.
		$links = array(
			&#039;self&#039;       =&gt; array(
				&#039;href&#039; =&gt; rest_url( rest_get_route_for_post( $post-&gt;ID ) ),
			),
			&#039;collection&#039; =&gt; array(
				&#039;href&#039; =&gt; rest_url( rest_get_route_for_post_type_items( $this-&gt;post_type ) ),
			),
			&#039;about&#039;      =&gt; array(
				&#039;href&#039; =&gt; rest_url( &#039;wp/v2/types/&#039; . $this-&gt;post_type ),
			),
		);

		if ( ( in_array( $post-&gt;post_type, array( &#039;post&#039;, &#039;page&#039; ), true ) || post_type_supports( $post-&gt;post_type, &#039;author&#039; ) )
			&amp;&amp; ! empty( $post-&gt;post_author ) ) {
			$links[&#039;author&#039;] = array(
				&#039;href&#039;       =&gt; rest_url( &#039;wp/v2/users/&#039; . $post-&gt;post_author ),
				&#039;embeddable&#039; =&gt; true,
			);
		}

		if ( in_array( $post-&gt;post_type, array( &#039;post&#039;, &#039;page&#039; ), true ) || post_type_supports( $post-&gt;post_type, &#039;comments&#039; ) ) {
			$replies_url = rest_url( &#039;wp/v2/comments&#039; );
			$replies_url = add_query_arg( &#039;post&#039;, $post-&gt;ID, $replies_url );

			$links[&#039;replies&#039;] = array(
				&#039;href&#039;       =&gt; $replies_url,
				&#039;embeddable&#039; =&gt; true,
			);
		}

		if ( in_array( $post-&gt;post_type, array( &#039;post&#039;, &#039;page&#039; ), true ) || post_type_supports( $post-&gt;post_type, &#039;revisions&#039; ) ) {
			$revisions       = wp_get_latest_revision_id_and_total_count( $post-&gt;ID );
			$revisions_count = ! is_wp_error( $revisions ) ? $revisions[&#039;count&#039;] : 0;
			$revisions_base  = sprintf( &#039;/%s/%s/%d/revisions&#039;, $this-&gt;namespace, $this-&gt;rest_base, $post-&gt;ID );

			$links[&#039;version-history&#039;] = array(
				&#039;href&#039;  =&gt; rest_url( $revisions_base ),
				&#039;count&#039; =&gt; $revisions_count,
			);

			if ( $revisions_count &gt; 0 ) {
				$links[&#039;predecessor-version&#039;] = array(
					&#039;href&#039; =&gt; rest_url( $revisions_base . &#039;/&#039; . $revisions[&#039;latest_id&#039;] ),
					&#039;id&#039;   =&gt; $revisions[&#039;latest_id&#039;],
				);
			}
		}

		$post_type_obj = get_post_type_object( $post-&gt;post_type );

		if ( $post_type_obj-&gt;hierarchical &amp;&amp; ! empty( $post-&gt;post_parent ) ) {
			$links[&#039;up&#039;] = array(
				&#039;href&#039;       =&gt; rest_url( rest_get_route_for_post( $post-&gt;post_parent ) ),
				&#039;embeddable&#039; =&gt; true,
			);
		}

		// If we have a featured media, add that.
		$featured_media = get_post_thumbnail_id( $post-&gt;ID );
		if ( $featured_media ) {
			$image_url = rest_url( rest_get_route_for_post( $featured_media ) );

			$links[&#039;https://api.w.org/featuredmedia&#039;] = array(
				&#039;href&#039;       =&gt; $image_url,
				&#039;embeddable&#039; =&gt; true,
			);
		}

		if ( ! in_array( $post-&gt;post_type, array( &#039;attachment&#039;, &#039;nav_menu_item&#039;, &#039;revision&#039; ), true ) ) {
			$attachments_url = rest_url( rest_get_route_for_post_type_items( &#039;attachment&#039; ) );
			$attachments_url = add_query_arg( &#039;parent&#039;, $post-&gt;ID, $attachments_url );

			$links[&#039;https://api.w.org/attachment&#039;] = array(
				&#039;href&#039; =&gt; $attachments_url,
			);
		}

		$taxonomies = get_object_taxonomies( $post-&gt;post_type );

		if ( ! empty( $taxonomies ) ) {
			$links[&#039;https://api.w.org/term&#039;] = array();

			foreach ( $taxonomies as $tax ) {
				$taxonomy_route = rest_get_route_for_taxonomy_items( $tax );

				// Skip taxonomies that are not public.
				if ( empty( $taxonomy_route ) ) {
					continue;
				}
				$terms_url = add_query_arg(
					&#039;post&#039;,
					$post-&gt;ID,
					rest_url( $taxonomy_route )
				);

				$links[&#039;https://api.w.org/term&#039;][] = array(
					&#039;href&#039;       =&gt; $terms_url,
					&#039;taxonomy&#039;   =&gt; $tax,
					&#039;embeddable&#039; =&gt; true,
				);
			}
		}

		return $links;
	}

	/**
	 * Gets the link relations available for the post and current user.
	 *
	 * @since 4.9.8
	 *
	 * @param WP_Post         $post    Post object.
	 * @param WP_REST_Request $request Request object.
	 * @return array List of link relations.
	 */
	protected function get_available_actions( $post, $request ) {

		if ( &#039;edit&#039; !== $request[&#039;context&#039;] ) {
			return array();
		}

		$rels = array();

		$post_type = get_post_type_object( $post-&gt;post_type );

		if ( &#039;attachment&#039; !== $this-&gt;post_type &amp;&amp; current_user_can( $post_type-&gt;cap-&gt;publish_posts ) ) {
			$rels[] = &#039;https://api.w.org/action-publish&#039;;
		}

		if ( current_user_can( &#039;unfiltered_html&#039; ) ) {
			$rels[] = &#039;https://api.w.org/action-unfiltered-html&#039;;
		}

		if ( &#039;post&#039; === $post_type-&gt;name ) {
			if ( current_user_can( $post_type-&gt;cap-&gt;edit_others_posts ) &amp;&amp; current_user_can( $post_type-&gt;cap-&gt;publish_posts ) ) {
				$rels[] = &#039;https://api.w.org/action-sticky&#039;;
			}
		}

		if ( post_type_supports( $post_type-&gt;name, &#039;author&#039; ) ) {
			if ( current_user_can( $post_type-&gt;cap-&gt;edit_others_posts ) ) {
				$rels[] = &#039;https://api.w.org/action-assign-author&#039;;
			}
		}

		$taxonomies = wp_list_filter( get_object_taxonomies( $this-&gt;post_type, &#039;objects&#039; ), array( &#039;show_in_rest&#039; =&gt; true ) );

		foreach ( $taxonomies as $tax ) {
			$tax_base   = ! empty( $tax-&gt;rest_base ) ? $tax-&gt;rest_base : $tax-&gt;name;
			$create_cap = is_taxonomy_hierarchical( $tax-&gt;name ) ? $tax-&gt;cap-&gt;edit_terms : $tax-&gt;cap-&gt;assign_terms;

			if ( current_user_can( $create_cap ) ) {
				$rels[] = &#039;https://api.w.org/action-create-&#039; . $tax_base;
			}

			if ( current_user_can( $tax-&gt;cap-&gt;assign_terms ) ) {
				$rels[] = &#039;https://api.w.org/action-assign-&#039; . $tax_base;
			}
		}

		return $rels;
	}

	/**
	 * Retrieves the post&#039;s schema, conforming to JSON Schema.
	 *
	 * @since 4.7.0
	 *
	 * @return array Item schema data.
	 */
	public function get_item_schema() {
		if ( $this-&gt;schema ) {
			return $this-&gt;add_additional_fields_schema( $this-&gt;schema );
		}

		$schema = array(
			&#039;$schema&#039;    =&gt; &#039;http://json-schema.org/draft-04/schema#&#039;,
			&#039;title&#039;      =&gt; $this-&gt;post_type,
			&#039;type&#039;       =&gt; &#039;object&#039;,
			// Base properties for every Post.
			&#039;properties&#039; =&gt; array(
				&#039;date&#039;         =&gt; array(
					&#039;description&#039; =&gt; __( &quot;The date the post was published, in the site&#039;s timezone.&quot; ),
					&#039;type&#039;        =&gt; array( &#039;string&#039;, &#039;null&#039; ),
					&#039;format&#039;      =&gt; &#039;date-time&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),
				&#039;date_gmt&#039;     =&gt; array(
					&#039;description&#039; =&gt; __( &#039;The date the post was published, as GMT.&#039; ),
					&#039;type&#039;        =&gt; array( &#039;string&#039;, &#039;null&#039; ),
					&#039;format&#039;      =&gt; &#039;date-time&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
				),
				&#039;guid&#039;         =&gt; array(
					&#039;description&#039; =&gt; __( &#039;The globally unique identifier for the post.&#039; ),
					&#039;type&#039;        =&gt; &#039;object&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
					&#039;readonly&#039;    =&gt; true,
					&#039;properties&#039;  =&gt; array(
						&#039;raw&#039;      =&gt; array(
							&#039;description&#039; =&gt; __( &#039;GUID for the post, as it exists in the database.&#039; ),
							&#039;type&#039;        =&gt; &#039;string&#039;,
							&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
							&#039;readonly&#039;    =&gt; true,
						),
						&#039;rendered&#039; =&gt; array(
							&#039;description&#039; =&gt; __( &#039;GUID for the post, transformed for display.&#039; ),
							&#039;type&#039;        =&gt; &#039;string&#039;,
							&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
							&#039;readonly&#039;    =&gt; true,
						),
					),
				),
				&#039;id&#039;           =&gt; array(
					&#039;description&#039; =&gt; __( &#039;Unique identifier for the post.&#039; ),
					&#039;type&#039;        =&gt; &#039;integer&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
					&#039;readonly&#039;    =&gt; true,
				),
				&#039;link&#039;         =&gt; array(
					&#039;description&#039; =&gt; __( &#039;URL to the post.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;format&#039;      =&gt; &#039;uri&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
					&#039;readonly&#039;    =&gt; true,
				),
				&#039;modified&#039;     =&gt; array(
					&#039;description&#039; =&gt; __( &quot;The date the post was last modified, in the site&#039;s timezone.&quot; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;format&#039;      =&gt; &#039;date-time&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
					&#039;readonly&#039;    =&gt; true,
				),
				&#039;modified_gmt&#039; =&gt; array(
					&#039;description&#039; =&gt; __( &#039;The date the post was last modified, as GMT.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;format&#039;      =&gt; &#039;date-time&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
					&#039;readonly&#039;    =&gt; true,
				),
				&#039;slug&#039;         =&gt; array(
					&#039;description&#039; =&gt; __( &#039;An alphanumeric identifier for the post unique to its type.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
					&#039;arg_options&#039; =&gt; array(
						&#039;sanitize_callback&#039; =&gt; array( $this, &#039;sanitize_slug&#039; ),
					),
				),
				&#039;status&#039;       =&gt; array(
					&#039;description&#039; =&gt; __( &#039;A named status for the post.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;enum&#039;        =&gt; array_keys( get_post_stati( array( &#039;internal&#039; =&gt; false ) ) ),
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
					&#039;arg_options&#039; =&gt; array(
						&#039;validate_callback&#039; =&gt; array( $this, &#039;check_status&#039; ),
					),
				),
				&#039;type&#039;         =&gt; array(
					&#039;description&#039; =&gt; __( &#039;Type of post.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
					&#039;readonly&#039;    =&gt; true,
				),
				&#039;password&#039;     =&gt; array(
					&#039;description&#039; =&gt; __( &#039;A password to protect access to the content and excerpt.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
				),
			),
		);

		$post_type_obj = get_post_type_object( $this-&gt;post_type );
		if ( is_post_type_viewable( $post_type_obj ) &amp;&amp; $post_type_obj-&gt;public ) {
			$schema[&#039;properties&#039;][&#039;permalink_template&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;Permalink template for the post.&#039; ),
				&#039;type&#039;        =&gt; &#039;string&#039;,
				&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
				&#039;readonly&#039;    =&gt; true,
			);

			$schema[&#039;properties&#039;][&#039;generated_slug&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;Slug automatically generated from the post title.&#039; ),
				&#039;type&#039;        =&gt; &#039;string&#039;,
				&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
				&#039;readonly&#039;    =&gt; true,
			);

			$schema[&#039;properties&#039;][&#039;class_list&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;An array of the class names for the post container element.&#039; ),
				&#039;type&#039;        =&gt; &#039;array&#039;,
				&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
				&#039;readonly&#039;    =&gt; true,
				&#039;items&#039;       =&gt; array(
					&#039;type&#039; =&gt; &#039;string&#039;,
				),
			);
		}

		if ( $post_type_obj-&gt;hierarchical ) {
			$schema[&#039;properties&#039;][&#039;parent&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;The ID for the parent of the post.&#039; ),
				&#039;type&#039;        =&gt; &#039;integer&#039;,
				&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
			);
		}

		$post_type_attributes = array(
			&#039;title&#039;,
			&#039;editor&#039;,
			&#039;author&#039;,
			&#039;excerpt&#039;,
			&#039;thumbnail&#039;,
			&#039;comments&#039;,
			&#039;revisions&#039;,
			&#039;page-attributes&#039;,
			&#039;post-formats&#039;,
			&#039;custom-fields&#039;,
		);
		$fixed_schemas        = array(
			&#039;post&#039;       =&gt; array(
				&#039;title&#039;,
				&#039;editor&#039;,
				&#039;author&#039;,
				&#039;excerpt&#039;,
				&#039;thumbnail&#039;,
				&#039;comments&#039;,
				&#039;revisions&#039;,
				&#039;post-formats&#039;,
				&#039;custom-fields&#039;,
			),
			&#039;page&#039;       =&gt; array(
				&#039;title&#039;,
				&#039;editor&#039;,
				&#039;author&#039;,
				&#039;excerpt&#039;,
				&#039;thumbnail&#039;,
				&#039;comments&#039;,
				&#039;revisions&#039;,
				&#039;page-attributes&#039;,
				&#039;custom-fields&#039;,
			),
			&#039;attachment&#039; =&gt; array(
				&#039;title&#039;,
				&#039;author&#039;,
				&#039;comments&#039;,
				&#039;revisions&#039;,
				&#039;custom-fields&#039;,
				&#039;thumbnail&#039;,
			),
		);

		foreach ( $post_type_attributes as $attribute ) {
			if ( isset( $fixed_schemas[ $this-&gt;post_type ] ) &amp;&amp; ! in_array( $attribute, $fixed_schemas[ $this-&gt;post_type ], true ) ) {
				continue;
			} elseif ( ! isset( $fixed_schemas[ $this-&gt;post_type ] ) &amp;&amp; ! post_type_supports( $this-&gt;post_type, $attribute ) ) {
				continue;
			}

			switch ( $attribute ) {

				case &#039;title&#039;:
					$schema[&#039;properties&#039;][&#039;title&#039;] = array(
						&#039;description&#039; =&gt; __( &#039;The title for the post.&#039; ),
						&#039;type&#039;        =&gt; &#039;object&#039;,
						&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
						&#039;arg_options&#039; =&gt; array(
							&#039;sanitize_callback&#039; =&gt; null, // Note: sanitization implemented in self::prepare_item_for_database().
							&#039;validate_callback&#039; =&gt; null, // Note: validation implemented in self::prepare_item_for_database().
						),
						&#039;properties&#039;  =&gt; array(
							&#039;raw&#039;      =&gt; array(
								&#039;description&#039; =&gt; __( &#039;Title for the post, as it exists in the database.&#039; ),
								&#039;type&#039;        =&gt; &#039;string&#039;,
								&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
							),
							&#039;rendered&#039; =&gt; array(
								&#039;description&#039; =&gt; __( &#039;HTML title for the post, transformed for display.&#039; ),
								&#039;type&#039;        =&gt; &#039;string&#039;,
								&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
								&#039;readonly&#039;    =&gt; true,
							),
						),
					);
					break;

				case &#039;editor&#039;:
					$schema[&#039;properties&#039;][&#039;content&#039;] = array(
						&#039;description&#039; =&gt; __( &#039;The content for the post.&#039; ),
						&#039;type&#039;        =&gt; &#039;object&#039;,
						&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
						&#039;arg_options&#039; =&gt; array(
							&#039;sanitize_callback&#039; =&gt; null, // Note: sanitization implemented in self::prepare_item_for_database().
							&#039;validate_callback&#039; =&gt; null, // Note: validation implemented in self::prepare_item_for_database().
						),
						&#039;properties&#039;  =&gt; array(
							&#039;raw&#039;           =&gt; array(
								&#039;description&#039; =&gt; __( &#039;Content for the post, as it exists in the database.&#039; ),
								&#039;type&#039;        =&gt; &#039;string&#039;,
								&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
							),
							&#039;rendered&#039;      =&gt; array(
								&#039;description&#039; =&gt; __( &#039;HTML content for the post, transformed for display.&#039; ),
								&#039;type&#039;        =&gt; &#039;string&#039;,
								&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
								&#039;readonly&#039;    =&gt; true,
							),
							&#039;block_version&#039; =&gt; array(
								&#039;description&#039; =&gt; __( &#039;Version of the content block format used by the post.&#039; ),
								&#039;type&#039;        =&gt; &#039;integer&#039;,
								&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
								&#039;readonly&#039;    =&gt; true,
							),
							&#039;protected&#039;     =&gt; array(
								&#039;description&#039; =&gt; __( &#039;Whether the content is protected with a password.&#039; ),
								&#039;type&#039;        =&gt; &#039;boolean&#039;,
								&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
								&#039;readonly&#039;    =&gt; true,
							),
						),
					);
					break;

				case &#039;author&#039;:
					$schema[&#039;properties&#039;][&#039;author&#039;] = array(
						&#039;description&#039; =&gt; __( &#039;The ID for the author of the post.&#039; ),
						&#039;type&#039;        =&gt; &#039;integer&#039;,
						&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
					);
					break;

				case &#039;excerpt&#039;:
					$schema[&#039;properties&#039;][&#039;excerpt&#039;] = array(
						&#039;description&#039; =&gt; __( &#039;The excerpt for the post.&#039; ),
						&#039;type&#039;        =&gt; &#039;object&#039;,
						&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
						&#039;arg_options&#039; =&gt; array(
							&#039;sanitize_callback&#039; =&gt; null, // Note: sanitization implemented in self::prepare_item_for_database().
							&#039;validate_callback&#039; =&gt; null, // Note: validation implemented in self::prepare_item_for_database().
						),
						&#039;properties&#039;  =&gt; array(
							&#039;raw&#039;       =&gt; array(
								&#039;description&#039; =&gt; __( &#039;Excerpt for the post, as it exists in the database.&#039; ),
								&#039;type&#039;        =&gt; &#039;string&#039;,
								&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
							),
							&#039;rendered&#039;  =&gt; array(
								&#039;description&#039; =&gt; __( &#039;HTML excerpt for the post, transformed for display.&#039; ),
								&#039;type&#039;        =&gt; &#039;string&#039;,
								&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
								&#039;readonly&#039;    =&gt; true,
							),
							&#039;protected&#039; =&gt; array(
								&#039;description&#039; =&gt; __( &#039;Whether the excerpt is protected with a password.&#039; ),
								&#039;type&#039;        =&gt; &#039;boolean&#039;,
								&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
								&#039;readonly&#039;    =&gt; true,
							),
						),
					);
					break;

				case &#039;thumbnail&#039;:
					$schema[&#039;properties&#039;][&#039;featured_media&#039;] = array(
						&#039;description&#039; =&gt; __( &#039;The ID of the featured media for the post.&#039; ),
						&#039;type&#039;        =&gt; &#039;integer&#039;,
						&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
					);
					break;

				case &#039;comments&#039;:
					$schema[&#039;properties&#039;][&#039;comment_status&#039;] = array(
						&#039;description&#039; =&gt; __( &#039;Whether or not comments are open on the post.&#039; ),
						&#039;type&#039;        =&gt; &#039;string&#039;,
						&#039;enum&#039;        =&gt; array( &#039;open&#039;, &#039;closed&#039; ),
						&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
					);
					$schema[&#039;properties&#039;][&#039;ping_status&#039;]    = array(
						&#039;description&#039; =&gt; __( &#039;Whether or not the post can be pinged.&#039; ),
						&#039;type&#039;        =&gt; &#039;string&#039;,
						&#039;enum&#039;        =&gt; array( &#039;open&#039;, &#039;closed&#039; ),
						&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
					);
					break;

				case &#039;page-attributes&#039;:
					$schema[&#039;properties&#039;][&#039;menu_order&#039;] = array(
						&#039;description&#039; =&gt; __( &#039;The order of the post in relation to other posts.&#039; ),
						&#039;type&#039;        =&gt; &#039;integer&#039;,
						&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
					);
					break;

				case &#039;post-formats&#039;:
					// Get the native post formats and remove the array keys.
					$formats = array_values( get_post_format_slugs() );

					$schema[&#039;properties&#039;][&#039;format&#039;] = array(
						&#039;description&#039; =&gt; __( &#039;The format for the post.&#039; ),
						&#039;type&#039;        =&gt; &#039;string&#039;,
						&#039;enum&#039;        =&gt; $formats,
						&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
					);
					break;

				case &#039;custom-fields&#039;:
					$schema[&#039;properties&#039;][&#039;meta&#039;] = $this-&gt;meta-&gt;get_field_schema();
					break;

			}
		}

		if ( &#039;post&#039; === $this-&gt;post_type ) {
			$schema[&#039;properties&#039;][&#039;sticky&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;Whether or not the post should be treated as sticky.&#039; ),
				&#039;type&#039;        =&gt; &#039;boolean&#039;,
				&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
			);
		}

		$schema[&#039;properties&#039;][&#039;template&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;The theme file to use to display the post.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
			&#039;arg_options&#039; =&gt; array(
				&#039;validate_callback&#039; =&gt; array( $this, &#039;check_template&#039; ),
			),
		);

		$taxonomies = wp_list_filter( get_object_taxonomies( $this-&gt;post_type, &#039;objects&#039; ), array( &#039;show_in_rest&#039; =&gt; true ) );

		foreach ( $taxonomies as $taxonomy ) {
			$base = ! empty( $taxonomy-&gt;rest_base ) ? $taxonomy-&gt;rest_base : $taxonomy-&gt;name;

			if ( array_key_exists( $base, $schema[&#039;properties&#039;] ) ) {
				$taxonomy_field_name_with_conflict = ! empty( $taxonomy-&gt;rest_base ) ? &#039;rest_base&#039; : &#039;name&#039;;
				_doing_it_wrong(
					&#039;register_taxonomy&#039;,
					sprintf(
						/* translators: 1: The taxonomy name, 2: The property name, either &#039;rest_base&#039; or &#039;name&#039;, 3: The conflicting value. */
						__( &#039;The &quot;%1$s&quot; taxonomy &quot;%2$s&quot; property (%3$s) conflicts with an existing property on the REST API Posts Controller. Specify a custom &quot;rest_base&quot; when registering the taxonomy to avoid this error.&#039; ),
						$taxonomy-&gt;name,
						$taxonomy_field_name_with_conflict,
						$base
					),
					&#039;5.4.0&#039;
				);
			}

			$schema[&#039;properties&#039;][ $base ] = array(
				/* translators: %s: Taxonomy name. */
				&#039;description&#039; =&gt; sprintf( __( &#039;The terms assigned to the post in the %s taxonomy.&#039; ), $taxonomy-&gt;name ),
				&#039;type&#039;        =&gt; &#039;array&#039;,
				&#039;items&#039;       =&gt; array(
					&#039;type&#039; =&gt; &#039;integer&#039;,
				),
				&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039; ),
			);
		}

		$schema_links = $this-&gt;get_schema_links();

		if ( $schema_links ) {
			$schema[&#039;links&#039;] = $schema_links;
		}

		// Take a snapshot of which fields are in the schema pre-filtering.
		$schema_fields = array_keys( $schema[&#039;properties&#039;] );

		/**
		 * Filters the post&#039;s schema.
		 *
		 * The dynamic portion of the filter, `$this-&gt;post_type`, refers to the
		 * post type slug for the controller.
		 *
		 * Possible hook names include:
		 *
		 *  - `rest_post_item_schema`
		 *  - `rest_page_item_schema`
		 *  - `rest_attachment_item_schema`
		 *
		 * @since 5.4.0
		 *
		 * @param array $schema Item schema data.
		 */
		$schema = apply_filters( &quot;rest_{$this-&gt;post_type}_item_schema&quot;, $schema );

		// Emit a _doing_it_wrong warning if user tries to add new properties using this filter.
		$new_fields = array_diff( array_keys( $schema[&#039;properties&#039;] ), $schema_fields );
		if ( count( $new_fields ) &gt; 0 ) {
			_doing_it_wrong(
				__METHOD__,
				sprintf(
					/* translators: %s: register_rest_field */
					__( &#039;Please use %s to add new schema properties.&#039; ),
					&#039;register_rest_field&#039;
				),
				&#039;5.4.0&#039;
			);
		}

		$this-&gt;schema = $schema;

		return $this-&gt;add_additional_fields_schema( $this-&gt;schema );
	}

	/**
	 * Retrieves Link Description Objects that should be added to the Schema for the posts collection.
	 *
	 * @since 4.9.8
	 *
	 * @return array
	 */
	protected function get_schema_links() {

		$href = rest_url( &quot;{$this-&gt;namespace}/{$this-&gt;rest_base}/{id}&quot; );

		$links = array();

		if ( &#039;attachment&#039; !== $this-&gt;post_type ) {
			$links[] = array(
				&#039;rel&#039;          =&gt; &#039;https://api.w.org/action-publish&#039;,
				&#039;title&#039;        =&gt; __( &#039;The current user can publish this post.&#039; ),
				&#039;href&#039;         =&gt; $href,
				&#039;targetSchema&#039; =&gt; array(
					&#039;type&#039;       =&gt; &#039;object&#039;,
					&#039;properties&#039; =&gt; array(
						&#039;status&#039; =&gt; array(
							&#039;type&#039; =&gt; &#039;string&#039;,
							&#039;enum&#039; =&gt; array( &#039;publish&#039;, &#039;future&#039; ),
						),
					),
				),
			);
		}

		$links[] = array(
			&#039;rel&#039;          =&gt; &#039;https://api.w.org/action-unfiltered-html&#039;,
			&#039;title&#039;        =&gt; __( &#039;The current user can post unfiltered HTML markup and JavaScript.&#039; ),
			&#039;href&#039;         =&gt; $href,
			&#039;targetSchema&#039; =&gt; array(
				&#039;type&#039;       =&gt; &#039;object&#039;,
				&#039;properties&#039; =&gt; array(
					&#039;content&#039; =&gt; array(
						&#039;raw&#039; =&gt; array(
							&#039;type&#039; =&gt; &#039;string&#039;,
						),
					),
				),
			),
		);

		if ( &#039;post&#039; === $this-&gt;post_type ) {
			$links[] = array(
				&#039;rel&#039;          =&gt; &#039;https://api.w.org/action-sticky&#039;,
				&#039;title&#039;        =&gt; __( &#039;The current user can sticky this post.&#039; ),
				&#039;href&#039;         =&gt; $href,
				&#039;targetSchema&#039; =&gt; array(
					&#039;type&#039;       =&gt; &#039;object&#039;,
					&#039;properties&#039; =&gt; array(
						&#039;sticky&#039; =&gt; array(
							&#039;type&#039; =&gt; &#039;boolean&#039;,
						),
					),
				),
			);
		}

		if ( post_type_supports( $this-&gt;post_type, &#039;author&#039; ) ) {
			$links[] = array(
				&#039;rel&#039;          =&gt; &#039;https://api.w.org/action-assign-author&#039;,
				&#039;title&#039;        =&gt; __( &#039;The current user can change the author on this post.&#039; ),
				&#039;href&#039;         =&gt; $href,
				&#039;targetSchema&#039; =&gt; array(
					&#039;type&#039;       =&gt; &#039;object&#039;,
					&#039;properties&#039; =&gt; array(
						&#039;author&#039; =&gt; array(
							&#039;type&#039; =&gt; &#039;integer&#039;,
						),
					),
				),
			);
		}

		$taxonomies = wp_list_filter( get_object_taxonomies( $this-&gt;post_type, &#039;objects&#039; ), array( &#039;show_in_rest&#039; =&gt; true ) );

		foreach ( $taxonomies as $tax ) {
			$tax_base = ! empty( $tax-&gt;rest_base ) ? $tax-&gt;rest_base : $tax-&gt;name;

			/* translators: %s: Taxonomy name. */
			$assign_title = sprintf( __( &#039;The current user can assign terms in the %s taxonomy.&#039; ), $tax-&gt;name );
			/* translators: %s: Taxonomy name. */
			$create_title = sprintf( __( &#039;The current user can create terms in the %s taxonomy.&#039; ), $tax-&gt;name );

			$links[] = array(
				&#039;rel&#039;          =&gt; &#039;https://api.w.org/action-assign-&#039; . $tax_base,
				&#039;title&#039;        =&gt; $assign_title,
				&#039;href&#039;         =&gt; $href,
				&#039;targetSchema&#039; =&gt; array(
					&#039;type&#039;       =&gt; &#039;object&#039;,
					&#039;properties&#039; =&gt; array(
						$tax_base =&gt; array(
							&#039;type&#039;  =&gt; &#039;array&#039;,
							&#039;items&#039; =&gt; array(
								&#039;type&#039; =&gt; &#039;integer&#039;,
							),
						),
					),
				),
			);

			$links[] = array(
				&#039;rel&#039;          =&gt; &#039;https://api.w.org/action-create-&#039; . $tax_base,
				&#039;title&#039;        =&gt; $create_title,
				&#039;href&#039;         =&gt; $href,
				&#039;targetSchema&#039; =&gt; array(
					&#039;type&#039;       =&gt; &#039;object&#039;,
					&#039;properties&#039; =&gt; array(
						$tax_base =&gt; array(
							&#039;type&#039;  =&gt; &#039;array&#039;,
							&#039;items&#039; =&gt; array(
								&#039;type&#039; =&gt; &#039;integer&#039;,
							),
						),
					),
				),
			);
		}

		return $links;
	}

	/**
	 * Retrieves the query params for the posts collection.
	 *
	 * @since 4.7.0
	 * @since 5.4.0 The `tax_relation` query parameter was added.
	 * @since 5.7.0 The `modified_after` and `modified_before` query parameters were added.
	 *
	 * @return array Collection parameters.
	 */
	public function get_collection_params() {
		$query_params = parent::get_collection_params();

		$query_params[&#039;context&#039;][&#039;default&#039;] = &#039;view&#039;;

		$query_params[&#039;after&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Limit response to posts published after a given ISO8601 compliant date.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;format&#039;      =&gt; &#039;date-time&#039;,
		);

		$query_params[&#039;modified_after&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Limit response to posts modified after a given ISO8601 compliant date.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;format&#039;      =&gt; &#039;date-time&#039;,
		);

		if ( post_type_supports( $this-&gt;post_type, &#039;author&#039; ) ) {
			$query_params[&#039;author&#039;]         = array(
				&#039;description&#039; =&gt; __( &#039;Limit result set to posts assigned to specific authors.&#039; ),
				&#039;type&#039;        =&gt; &#039;array&#039;,
				&#039;items&#039;       =&gt; array(
					&#039;type&#039; =&gt; &#039;integer&#039;,
				),
				&#039;default&#039;     =&gt; array(),
			);
			$query_params[&#039;author_exclude&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;Ensure result set excludes posts assigned to specific authors.&#039; ),
				&#039;type&#039;        =&gt; &#039;array&#039;,
				&#039;items&#039;       =&gt; array(
					&#039;type&#039; =&gt; &#039;integer&#039;,
				),
				&#039;default&#039;     =&gt; array(),
			);
		}

		$query_params[&#039;before&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Limit response to posts published before a given ISO8601 compliant date.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;format&#039;      =&gt; &#039;date-time&#039;,
		);

		$query_params[&#039;modified_before&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Limit response to posts modified before a given ISO8601 compliant date.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;format&#039;      =&gt; &#039;date-time&#039;,
		);

		$query_params[&#039;exclude&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Ensure result set excludes specific IDs.&#039; ),
			&#039;type&#039;        =&gt; &#039;array&#039;,
			&#039;items&#039;       =&gt; array(
				&#039;type&#039; =&gt; &#039;integer&#039;,
			),
			&#039;default&#039;     =&gt; array(),
		);

		$query_params[&#039;include&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Limit result set to specific IDs.&#039; ),
			&#039;type&#039;        =&gt; &#039;array&#039;,
			&#039;items&#039;       =&gt; array(
				&#039;type&#039; =&gt; &#039;integer&#039;,
			),
			&#039;default&#039;     =&gt; array(),
		);

		if ( &#039;page&#039; === $this-&gt;post_type || post_type_supports( $this-&gt;post_type, &#039;page-attributes&#039; ) ) {
			$query_params[&#039;menu_order&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;Limit result set to posts with a specific menu_order value.&#039; ),
				&#039;type&#039;        =&gt; &#039;integer&#039;,
			);
		}

		$query_params[&#039;search_semantics&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;How to interpret the search input.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;enum&#039;        =&gt; array( &#039;exact&#039; ),
		);

		$query_params[&#039;offset&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Offset the result set by a specific number of items.&#039; ),
			&#039;type&#039;        =&gt; &#039;integer&#039;,
		);

		$query_params[&#039;order&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Order sort attribute ascending or descending.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;default&#039;     =&gt; &#039;desc&#039;,
			&#039;enum&#039;        =&gt; array( &#039;asc&#039;, &#039;desc&#039; ),
		);

		$query_params[&#039;orderby&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Sort collection by post attribute.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;default&#039;     =&gt; &#039;date&#039;,
			&#039;enum&#039;        =&gt; array(
				&#039;author&#039;,
				&#039;date&#039;,
				&#039;id&#039;,
				&#039;include&#039;,
				&#039;modified&#039;,
				&#039;parent&#039;,
				&#039;relevance&#039;,
				&#039;slug&#039;,
				&#039;include_slugs&#039;,
				&#039;title&#039;,
			),
		);

		if ( &#039;page&#039; === $this-&gt;post_type || post_type_supports( $this-&gt;post_type, &#039;page-attributes&#039; ) ) {
			$query_params[&#039;orderby&#039;][&#039;enum&#039;][] = &#039;menu_order&#039;;
		}

		$post_type = get_post_type_object( $this-&gt;post_type );

		if ( $post_type-&gt;hierarchical || &#039;attachment&#039; === $this-&gt;post_type ) {
			$query_params[&#039;parent&#039;]         = array(
				&#039;description&#039; =&gt; __( &#039;Limit result set to items with particular parent IDs.&#039; ),
				&#039;type&#039;        =&gt; &#039;array&#039;,
				&#039;items&#039;       =&gt; array(
					&#039;type&#039; =&gt; &#039;integer&#039;,
				),
				&#039;default&#039;     =&gt; array(),
			);
			$query_params[&#039;parent_exclude&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;Limit result set to all items except those of a particular parent ID.&#039; ),
				&#039;type&#039;        =&gt; &#039;array&#039;,
				&#039;items&#039;       =&gt; array(
					&#039;type&#039; =&gt; &#039;integer&#039;,
				),
				&#039;default&#039;     =&gt; array(),
			);
		}

		$query_params[&#039;search_columns&#039;] = array(
			&#039;default&#039;     =&gt; array(),
			&#039;description&#039; =&gt; __( &#039;Array of column names to be searched.&#039; ),
			&#039;type&#039;        =&gt; &#039;array&#039;,
			&#039;items&#039;       =&gt; array(
				&#039;enum&#039; =&gt; array( &#039;post_title&#039;, &#039;post_content&#039;, &#039;post_excerpt&#039; ),
				&#039;type&#039; =&gt; &#039;string&#039;,
			),
		);

		$query_params[&#039;slug&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Limit result set to posts with one or more specific slugs.&#039; ),
			&#039;type&#039;        =&gt; &#039;array&#039;,
			&#039;items&#039;       =&gt; array(
				&#039;type&#039; =&gt; &#039;string&#039;,
			),
		);

		$query_params[&#039;status&#039;] = array(
			&#039;default&#039;           =&gt; &#039;publish&#039;,
			&#039;description&#039;       =&gt; __( &#039;Limit result set to posts assigned one or more statuses.&#039; ),
			&#039;type&#039;              =&gt; &#039;array&#039;,
			&#039;items&#039;             =&gt; array(
				&#039;enum&#039; =&gt; array_merge( array_keys( get_post_stati() ), array( &#039;any&#039; ) ),
				&#039;type&#039; =&gt; &#039;string&#039;,
			),
			&#039;sanitize_callback&#039; =&gt; array( $this, &#039;sanitize_post_statuses&#039; ),
		);

		$query_params = $this-&gt;prepare_taxonomy_limit_schema( $query_params );

		if ( &#039;post&#039; === $this-&gt;post_type ) {
			$query_params[&#039;sticky&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;Limit result set to items that are sticky.&#039; ),
				&#039;type&#039;        =&gt; &#039;boolean&#039;,
			);

			$query_params[&#039;ignore_sticky&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;Whether to ignore sticky posts or not.&#039; ),
				&#039;type&#039;        =&gt; &#039;boolean&#039;,
				&#039;default&#039;     =&gt; false,
			);
		}

		if ( post_type_supports( $this-&gt;post_type, &#039;post-formats&#039; ) ) {
			$query_params[&#039;format&#039;] = array(
				&#039;description&#039; =&gt; __( &#039;Limit result set to items assigned one or more given formats.&#039; ),
				&#039;type&#039;        =&gt; &#039;array&#039;,
				&#039;uniqueItems&#039; =&gt; true,
				&#039;items&#039;       =&gt; array(
					&#039;enum&#039; =&gt; array_values( get_post_format_slugs() ),
					&#039;type&#039; =&gt; &#039;string&#039;,
				),
			);
		}

		/**
		 * Filters collection parameters for the posts controller.
		 *
		 * The dynamic part of the filter `$this-&gt;post_type` refers to the post
		 * type slug for the controller.
		 *
		 * This filter registers the collection parameter, but does not map the
		 * collection parameter to an internal WP_Query parameter. Use the
		 * `rest_{$this-&gt;post_type}_query` filter to set WP_Query parameters.
		 *
		 * @since 4.7.0
		 *
		 * @param array        $query_params JSON Schema-formatted collection parameters.
		 * @param WP_Post_Type $post_type    Post type object.
		 */
		return apply_filters( &quot;rest_{$this-&gt;post_type}_collection_params&quot;, $query_params, $post_type );
	}

	/**
	 * Sanitizes and validates the list of post statuses, including whether the
	 * user can query private statuses.
	 *
	 * @since 4.7.0
	 *
	 * @param string|array    $statuses  One or more post statuses.
	 * @param WP_REST_Request $request   Full details about the request.
	 * @param string          $parameter Additional parameter to pass to validation.
	 * @return array|WP_Error A list of valid statuses, otherwise WP_Error object.
	 */
	public function sanitize_post_statuses( $statuses, $request, $parameter ) {
		$statuses = wp_parse_slug_list( $statuses );

		// The default status is different in WP_REST_Attachments_Controller.
		$attributes     = $request-&gt;get_attributes();
		$default_status = $attributes[&#039;args&#039;][&#039;status&#039;][&#039;default&#039;];

		foreach ( $statuses as $status ) {
			if ( $status === $default_status ) {
				continue;
			}

			$post_type_obj = get_post_type_object( $this-&gt;post_type );

			if ( current_user_can( $post_type_obj-&gt;cap-&gt;edit_posts ) || &#039;private&#039; === $status &amp;&amp; current_user_can( $post_type_obj-&gt;cap-&gt;read_private_posts ) ) {
				$result = rest_validate_request_arg( $status, $request, $parameter );
				if ( is_wp_error( $result ) ) {
					return $result;
				}
			} else {
				return new WP_Error(
					&#039;rest_forbidden_status&#039;,
					__( &#039;Status is forbidden.&#039; ),
					array( &#039;status&#039; =&gt; rest_authorization_required_code() )
				);
			}
		}

		return $statuses;
	}

	/**
	 * Prepares the &#039;tax_query&#039; for a collection of posts.
	 *
	 * @since 5.7.0
	 *
	 * @param array           $args    WP_Query arguments.
	 * @param WP_REST_Request $request Full details about the request.
	 * @return array Updated query arguments.
	 */
	private function prepare_tax_query( array $args, WP_REST_Request $request ) {
		$relation = $request[&#039;tax_relation&#039;];

		if ( $relation ) {
			$args[&#039;tax_query&#039;] = array( &#039;relation&#039; =&gt; $relation );
		}

		$taxonomies = wp_list_filter(
			get_object_taxonomies( $this-&gt;post_type, &#039;objects&#039; ),
			array( &#039;show_in_rest&#039; =&gt; true )
		);

		foreach ( $taxonomies as $taxonomy ) {
			$base = ! empty( $taxonomy-&gt;rest_base ) ? $taxonomy-&gt;rest_base : $taxonomy-&gt;name;

			$tax_include = $request[ $base ];
			$tax_exclude = $request[ $base . &#039;_exclude&#039; ];

			if ( $tax_include ) {
				$terms            = array();
				$include_children = false;
				$operator         = &#039;IN&#039;;

				if ( rest_is_array( $tax_include ) ) {
					$terms = $tax_include;
				} elseif ( rest_is_object( $tax_include ) ) {
					$terms            = empty( $tax_include[&#039;terms&#039;] ) ? array() : $tax_include[&#039;terms&#039;];
					$include_children = ! empty( $tax_include[&#039;include_children&#039;] );

					if ( isset( $tax_include[&#039;operator&#039;] ) &amp;&amp; &#039;AND&#039; === $tax_include[&#039;operator&#039;] ) {
						$operator = &#039;AND&#039;;
					}
				}

				if ( $terms ) {
					$args[&#039;tax_query&#039;][] = array(
						&#039;taxonomy&#039;         =&gt; $taxonomy-&gt;name,
						&#039;field&#039;            =&gt; &#039;term_id&#039;,
						&#039;terms&#039;            =&gt; $terms,
						&#039;include_children&#039; =&gt; $include_children,
						&#039;operator&#039;         =&gt; $operator,
					);
				}
			}

			if ( $tax_exclude ) {
				$terms            = array();
				$include_children = false;

				if ( rest_is_array( $tax_exclude ) ) {
					$terms = $tax_exclude;
				} elseif ( rest_is_object( $tax_exclude ) ) {
					$terms            = empty( $tax_exclude[&#039;terms&#039;] ) ? array() : $tax_exclude[&#039;terms&#039;];
					$include_children = ! empty( $tax_exclude[&#039;include_children&#039;] );
				}

				if ( $terms ) {
					$args[&#039;tax_query&#039;][] = array(
						&#039;taxonomy&#039;         =&gt; $taxonomy-&gt;name,
						&#039;field&#039;            =&gt; &#039;term_id&#039;,
						&#039;terms&#039;            =&gt; $terms,
						&#039;include_children&#039; =&gt; $include_children,
						&#039;operator&#039;         =&gt; &#039;NOT IN&#039;,
					);
				}
			}
		}

		return $args;
	}

	/**
	 * Prepares the collection schema for including and excluding items by terms.
	 *
	 * @since 5.7.0
	 *
	 * @param array $query_params Collection schema.
	 * @return array Updated schema.
	 */
	private function prepare_taxonomy_limit_schema( array $query_params ) {
		$taxonomies = wp_list_filter( get_object_taxonomies( $this-&gt;post_type, &#039;objects&#039; ), array( &#039;show_in_rest&#039; =&gt; true ) );

		if ( ! $taxonomies ) {
			return $query_params;
		}

		$query_params[&#039;tax_relation&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Limit result set based on relationship between multiple taxonomies.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;enum&#039;        =&gt; array( &#039;AND&#039;, &#039;OR&#039; ),
		);

		$limit_schema = array(
			&#039;type&#039;  =&gt; array( &#039;object&#039;, &#039;array&#039; ),
			&#039;oneOf&#039; =&gt; array(
				array(
					&#039;title&#039;       =&gt; __( &#039;Term ID List&#039; ),
					&#039;description&#039; =&gt; __( &#039;Match terms with the listed IDs.&#039; ),
					&#039;type&#039;        =&gt; &#039;array&#039;,
					&#039;items&#039;       =&gt; array(
						&#039;type&#039; =&gt; &#039;integer&#039;,
					),
				),
				array(
					&#039;title&#039;                =&gt; __( &#039;Term ID Taxonomy Query&#039; ),
					&#039;description&#039;          =&gt; __( &#039;Perform an advanced term query.&#039; ),
					&#039;type&#039;                 =&gt; &#039;object&#039;,
					&#039;properties&#039;           =&gt; array(
						&#039;terms&#039;            =&gt; array(
							&#039;description&#039; =&gt; __( &#039;Term IDs.&#039; ),
							&#039;type&#039;        =&gt; &#039;array&#039;,
							&#039;items&#039;       =&gt; array(
								&#039;type&#039; =&gt; &#039;integer&#039;,
							),
							&#039;default&#039;     =&gt; array(),
						),
						&#039;include_children&#039; =&gt; array(
							&#039;description&#039; =&gt; __( &#039;Whether to include child terms in the terms limiting the result set.&#039; ),
							&#039;type&#039;        =&gt; &#039;boolean&#039;,
							&#039;default&#039;     =&gt; false,
						),
					),
					&#039;additionalProperties&#039; =&gt; false,
				),
			),
		);

		$include_schema = array_merge(
			array(
				/* translators: %s: Taxonomy name. */
				&#039;description&#039; =&gt; __( &#039;Limit result set to items with specific terms assigned in the %s taxonomy.&#039; ),
			),
			$limit_schema
		);
		// &#039;operator&#039; is supported only for &#039;include&#039; queries.
		$include_schema[&#039;oneOf&#039;][1][&#039;properties&#039;][&#039;operator&#039;] = array(
			&#039;description&#039; =&gt; __( &#039;Whether items must be assigned all or any of the specified terms.&#039; ),
			&#039;type&#039;        =&gt; &#039;string&#039;,
			&#039;enum&#039;        =&gt; array( &#039;AND&#039;, &#039;OR&#039; ),
			&#039;default&#039;     =&gt; &#039;OR&#039;,
		);

		$exclude_schema = array_merge(
			array(
				/* translators: %s: Taxonomy name. */
				&#039;description&#039; =&gt; __( &#039;Limit result set to items except those with specific terms assigned in the %s taxonomy.&#039; ),
			),
			$limit_schema
		);

		foreach ( $taxonomies as $taxonomy ) {
			$base         = ! empty( $taxonomy-&gt;rest_base ) ? $taxonomy-&gt;rest_base : $taxonomy-&gt;name;
			$base_exclude = $base . &#039;_exclude&#039;;

			$query_params[ $base ]                = $include_schema;
			$query_params[ $base ][&#039;description&#039;] = sprintf( $query_params[ $base ][&#039;description&#039;], $base );

			$query_params[ $base_exclude ]                = $exclude_schema;
			$query_params[ $base_exclude ][&#039;description&#039;] = sprintf( $query_params[ $base_exclude ][&#039;description&#039;], $base );

			if ( ! $taxonomy-&gt;hierarchical ) {
				unset( $query_params[ $base ][&#039;oneOf&#039;][1][&#039;properties&#039;][&#039;include_children&#039;] );
				unset( $query_params[ $base_exclude ][&#039;oneOf&#039;][1][&#039;properties&#039;][&#039;include_children&#039;] );
			}
		}

		return $query_params;
	}
}
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