WP_REST_Autosaves_Controller::prepare_item_for_response( WP_Post $item, WP_REST_Request $request ): WP_REST_Response

463	public function prepare_item_for_response( $item, $request ) {464		// Restores the more descriptive, specific name for use within this method.465		$post = $item;466 467		// Don't prepare the response body for HEAD requests.468		if ( $request->is_method( 'HEAD' ) ) {469			/** This filter is documented in wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php */470			return apply_filters( 'rest_prepare_autosave', new WP_REST_Response( array() ), $post, $request );471		}472		$response = $this->revisions_controller->prepare_item_for_response( $post, $request );473		$fields   = $this->get_fields_for_response( $request );474 475		if ( in_array( 'preview_link', $fields, true ) ) {476			$parent_id          = wp_is_post_autosave( $post );477			$preview_post_id    = false === $parent_id ? $post->ID : $parent_id;478			$preview_query_args = array();479 480			if ( false !== $parent_id ) {481				$preview_query_args['preview_id']    = $parent_id;482				$preview_query_args['preview_nonce'] = wp_create_nonce( 'post_preview_' . $parent_id );483			}484 485			$response->data['preview_link'] = get_preview_post_link( $preview_post_id, $preview_query_args );486		}487 488		$context        = ! empty( $request['context'] ) ? $request['context'] : 'view';489		$response->data = $this->add_additional_fields_to_object( $response->data, $request );490		$response->data = $this->filter_response_by_context( $response->data, $context );491 492		/**493		 * Filters a revision returned from the REST API.494		 *495		 * Allows modification of the revision right before it is returned.496		 *497		 * @since 5.0.0498		 *499		 * @param WP_REST_Response $response The response object.500		 * @param WP_Post          $post     The original revision object.501		 * @param WP_REST_Request  $request  Request used to generate the response.502		 */503		return apply_filters( 'rest_prepare_autosave', $response, $post, $request );504	}