angelovcom.net

class-wp-rest-attachments-controller.php (43823B)

---

 <?php
 /**
  * REST API: WP_REST_Attachments_Controller class
  *
  * @package WordPress
  * @subpackage REST_API
  * @since 4.7.0
  */
 
 /**
  * Core controller used to access attachments via the REST API.
  *
  * @since 4.7.0
  *
  * @see WP_REST_Posts_Controller
  */
 class WP_REST_Attachments_Controller extends WP_REST_Posts_Controller {
 
 	/**
 	 * Registers the routes for attachments.
 	 *
 	 * @since 5.3.0
 	 *
 	 * @see register_rest_route()
 	 */
 	public function register_routes() {
 		parent::register_routes();
 		register_rest_route(
 			$this->namespace,
 			'/' . $this->rest_base . '/(?P<id>[\d]+)/post-process',
 			array(
 				'methods'             => WP_REST_Server::CREATABLE,
 				'callback'            => array( $this, 'post_process_item' ),
 				'permission_callback' => array( $this, 'post_process_item_permissions_check' ),
 				'args'                => array(
 					'id'     => array(
 						'description' => __( 'Unique identifier for the attachment.' ),
 						'type'        => 'integer',
 					),
 					'action' => array(
 						'type'     => 'string',
 						'enum'     => array( 'create-image-subsizes' ),
 						'required' => true,
 					),
 				),
 			)
 		);
 		register_rest_route(
 			$this->namespace,
 			'/' . $this->rest_base . '/(?P<id>[\d]+)/edit',
 			array(
 				'methods'             => WP_REST_Server::CREATABLE,
 				'callback'            => array( $this, 'edit_media_item' ),
 				'permission_callback' => array( $this, 'edit_media_item_permissions_check' ),
 				'args'                => $this->get_edit_media_item_args(),
 			)
 		);
 	}
 
 	/**
 	 * Determines the allowed query_vars for a get_items() response and
 	 * prepares for WP_Query.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param array           $prepared_args Optional. Array of prepared arguments. Default empty array.
 	 * @param WP_REST_Request $request       Optional. Request to prepare items for.
 	 * @return array Array of query arguments.
 	 */
 	protected function prepare_items_query( $prepared_args = array(), $request = null ) {
 		$query_args = parent::prepare_items_query( $prepared_args, $request );
 
 		if ( empty( $query_args['post_status'] ) ) {
 			$query_args['post_status'] = 'inherit';
 		}
 
 		$media_types = $this->get_media_types();
 
 		if ( ! empty( $request['media_type'] ) && isset( $media_types[ $request['media_type'] ] ) ) {
 			$query_args['post_mime_type'] = $media_types[ $request['media_type'] ];
 		}
 
 		if ( ! empty( $request['mime_type'] ) ) {
 			$parts = explode( '/', $request['mime_type'] );
 			if ( isset( $media_types[ $parts[0] ] ) && in_array( $request['mime_type'], $media_types[ $parts[0] ], true ) ) {
 				$query_args['post_mime_type'] = $request['mime_type'];
 			}
 		}
 
 		// Filter query clauses to include filenames.
 		if ( isset( $query_args['s'] ) ) {
 			add_filter( 'posts_clauses', '_filter_query_attachment_filenames' );
 		}
 
 		return $query_args;
 	}
 
 	/**
 	 * Checks if a given request has access to create an attachment.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param WP_REST_Request $request Full details about the request.
 	 * @return true|WP_Error Boolean true if the attachment may be created, or a WP_Error if not.
 	 */
 	public function create_item_permissions_check( $request ) {
 		$ret = parent::create_item_permissions_check( $request );
 
 		if ( ! $ret || is_wp_error( $ret ) ) {
 			return $ret;
 		}
 
 		if ( ! current_user_can( 'upload_files' ) ) {
 			return new WP_Error(
 				'rest_cannot_create',
 				__( 'Sorry, you are not allowed to upload media on this site.' ),
 				array( 'status' => 400 )
 			);
 		}
 
 		// Attaching media to a post requires ability to edit said post.
 		if ( ! empty( $request['post'] ) && ! current_user_can( 'edit_post', (int) $request['post'] ) ) {
 			return new WP_Error(
 				'rest_cannot_edit',
 				__( 'Sorry, you are not allowed to upload media to this post.' ),
 				array( 'status' => rest_authorization_required_code() )
 			);
 		}
 
 		return true;
 	}
 
 	/**
 	 * Creates a single attachment.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param WP_REST_Request $request Full details about the request.
 	 * @return WP_REST_Response|WP_Error Response object on success, WP_Error object on failure.
 	 */
 	public function create_item( $request ) {
 		if ( ! empty( $request['post'] ) && in_array( get_post_type( $request['post'] ), array( 'revision', 'attachment' ), true ) ) {
 			return new WP_Error(
 				'rest_invalid_param',
 				__( 'Invalid parent type.' ),
 				array( 'status' => 400 )
 			);
 		}
 
 		$insert = $this->insert_attachment( $request );
 
 		if ( is_wp_error( $insert ) ) {
 			return $insert;
 		}
 
 		$schema = $this->get_item_schema();
 
 		// Extract by name.
 		$attachment_id = $insert['attachment_id'];
 		$file          = $insert['file'];
 
 		if ( isset( $request['alt_text'] ) ) {
 			update_post_meta( $attachment_id, '_wp_attachment_image_alt', sanitize_text_field( $request['alt_text'] ) );
 		}
 
 		if ( ! empty( $schema['properties']['meta'] ) && isset( $request['meta'] ) ) {
 			$meta_update = $this->meta->update_value( $request['meta'], $attachment_id );
 
 			if ( is_wp_error( $meta_update ) ) {
 				return $meta_update;
 			}
 		}
 
 		$attachment    = get_post( $attachment_id );
 		$fields_update = $this->update_additional_fields_for_object( $attachment, $request );
 
 		if ( is_wp_error( $fields_update ) ) {
 			return $fields_update;
 		}
 
 		$request->set_param( 'context', 'edit' );
 
 		/**
 		 * Fires after a single attachment is completely created or updated via the REST API.
 		 *
 		 * @since 5.0.0
 		 *
 		 * @param WP_Post         $attachment Inserted or updated attachment object.
 		 * @param WP_REST_Request $request    Request object.
 		 * @param bool            $creating   True when creating an attachment, false when updating.
 		 */
 		do_action( 'rest_after_insert_attachment', $attachment, $request, true );
 
 		wp_after_insert_post( $attachment, false, null );
 
 		if ( defined( 'REST_REQUEST' ) && REST_REQUEST ) {
 			// Set a custom header with the attachment_id.
 			// Used by the browser/client to resume creating image sub-sizes after a PHP fatal error.
 			header( 'X-WP-Upload-Attachment-ID: ' . $attachment_id );
 		}
 
 		// Include media and image functions to get access to wp_generate_attachment_metadata().
 		require_once ABSPATH . 'wp-admin/includes/media.php';
 		require_once ABSPATH . 'wp-admin/includes/image.php';
 
 		// Post-process the upload (create image sub-sizes, make PDF thumbnails, etc.) and insert attachment meta.
 		// At this point the server may run out of resources and post-processing of uploaded images may fail.
 		wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
 
 		$response = $this->prepare_item_for_response( $attachment, $request );
 		$response = rest_ensure_response( $response );
 		$response->set_status( 201 );
 		$response->header( 'Location', rest_url( sprintf( '%s/%s/%d', $this->namespace, $this->rest_base, $attachment_id ) ) );
 
 		return $response;
 	}
 
 	/**
 	 * Inserts the attachment post in the database. Does not update the attachment meta.
 	 *
 	 * @since 5.3.0
 	 *
 	 * @param WP_REST_Request $request
 	 * @return array|WP_Error
 	 */
 	protected function insert_attachment( $request ) {
 		// Get the file via $_FILES or raw data.
 		$files   = $request->get_file_params();
 		$headers = $request->get_headers();
 
 		if ( ! empty( $files ) ) {
 			$file = $this->upload_from_file( $files, $headers );
 		} else {
 			$file = $this->upload_from_data( $request->get_body(), $headers );
 		}
 
 		if ( is_wp_error( $file ) ) {
 			return $file;
 		}
 
 		$name       = wp_basename( $file['file'] );
 		$name_parts = pathinfo( $name );
 		$name       = trim( substr( $name, 0, -( 1 + strlen( $name_parts['extension'] ) ) ) );
 
 		$url  = $file['url'];
 		$type = $file['type'];
 		$file = $file['file'];
 
 		// Include image functions to get access to wp_read_image_metadata().
 		require_once ABSPATH . 'wp-admin/includes/image.php';
 
 		// Use image exif/iptc data for title and caption defaults if possible.
 		$image_meta = wp_read_image_metadata( $file );
 
 		if ( ! empty( $image_meta ) ) {
 			if ( empty( $request['title'] ) && trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {
 				$request['title'] = $image_meta['title'];
 			}
 
 			if ( empty( $request['caption'] ) && trim( $image_meta['caption'] ) ) {
 				$request['caption'] = $image_meta['caption'];
 			}
 		}
 
 		$attachment = $this->prepare_item_for_database( $request );
 
 		$attachment->post_mime_type = $type;
 		$attachment->guid           = $url;
 
 		if ( empty( $attachment->post_title ) ) {
 			$attachment->post_title = preg_replace( '/\.[^.]+$/', '', wp_basename( $file ) );
 		}
 
 		// $post_parent is inherited from $attachment['post_parent'].
 		$id = wp_insert_attachment( wp_slash( (array) $attachment ), $file, 0, true, false );
 
 		if ( is_wp_error( $id ) ) {
 			if ( 'db_update_error' === $id->get_error_code() ) {
 				$id->add_data( array( 'status' => 500 ) );
 			} else {
 				$id->add_data( array( 'status' => 400 ) );
 			}
 
 			return $id;
 		}
 
 		$attachment = get_post( $id );
 
 		/**
 		 * Fires after a single attachment is created or updated via the REST API.
 		 *
 		 * @since 4.7.0
 		 *
 		 * @param WP_Post         $attachment Inserted or updated attachment
 		 *                                    object.
 		 * @param WP_REST_Request $request    The request sent to the API.
 		 * @param bool            $creating   True when creating an attachment, false when updating.
 		 */
 		do_action( 'rest_insert_attachment', $attachment, $request, true );
 
 		return array(
 			'attachment_id' => $id,
 			'file'          => $file,
 		);
 	}
 
 	/**
 	 * Updates a single attachment.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param WP_REST_Request $request Full details about the request.
 	 * @return WP_REST_Response|WP_Error Response object on success, WP_Error object on failure.
 	 */
 	public function update_item( $request ) {
 		if ( ! empty( $request['post'] ) && in_array( get_post_type( $request['post'] ), array( 'revision', 'attachment' ), true ) ) {
 			return new WP_Error(
 				'rest_invalid_param',
 				__( 'Invalid parent type.' ),
 				array( 'status' => 400 )
 			);
 		}
 
 		$attachment_before = get_post( $request['id'] );
 		$response          = parent::update_item( $request );
 
 		if ( is_wp_error( $response ) ) {
 			return $response;
 		}
 
 		$response = rest_ensure_response( $response );
 		$data     = $response->get_data();
 
 		if ( isset( $request['alt_text'] ) ) {
 			update_post_meta( $data['id'], '_wp_attachment_image_alt', $request['alt_text'] );
 		}
 
 		$attachment = get_post( $request['id'] );
 
 		$fields_update = $this->update_additional_fields_for_object( $attachment, $request );
 
 		if ( is_wp_error( $fields_update ) ) {
 			return $fields_update;
 		}
 
 		$request->set_param( 'context', 'edit' );
 
 		/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php */
 		do_action( 'rest_after_insert_attachment', $attachment, $request, false );
 
 		wp_after_insert_post( $attachment, true, $attachment_before );
 
 		$response = $this->prepare_item_for_response( $attachment, $request );
 		$response = rest_ensure_response( $response );
 
 		return $response;
 	}
 
 	/**
 	 * Performs post processing on an attachment.
 	 *
 	 * @since 5.3.0
 	 *
 	 * @param WP_REST_Request $request Full details about the request.
 	 * @return WP_REST_Response|WP_Error Response object on success, WP_Error object on failure.
 	 */
 	public function post_process_item( $request ) {
 		switch ( $request['action'] ) {
 			case 'create-image-subsizes':
 				require_once ABSPATH . 'wp-admin/includes/image.php';
 				wp_update_image_subsizes( $request['id'] );
 				break;
 		}
 
 		$request['context'] = 'edit';
 
 		return $this->prepare_item_for_response( get_post( $request['id'] ), $request );
 	}
 
 	/**
 	 * Checks if a given request can perform post processing on an attachment.
 	 *
 	 * @since 5.3.0
 	 *
 	 * @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 post_process_item_permissions_check( $request ) {
 		return $this->update_item_permissions_check( $request );
 	}
 
 	/**
 	 * Checks if a given request has access to editing media.
 	 *
 	 * @since 5.5.0
 	 *
 	 * @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 edit_media_item_permissions_check( $request ) {
 		if ( ! current_user_can( 'upload_files' ) ) {
 			return new WP_Error(
 				'rest_cannot_edit_image',
 				__( 'Sorry, you are not allowed to upload media on this site.' ),
 				array( 'status' => rest_authorization_required_code() )
 			);
 		}
 
 		return $this->update_item_permissions_check( $request );
 	}
 
 	/**
 	 * Applies edits to a media item and creates a new attachment record.
 	 *
 	 * @since 5.5.0
 	 *
 	 * @param WP_REST_Request $request Full details about the request.
 	 * @return WP_REST_Response|WP_Error Response object on success, WP_Error object on failure.
 	 */
 	public function edit_media_item( $request ) {
 		require_once ABSPATH . 'wp-admin/includes/image.php';
 
 		$attachment_id = $request['id'];
 
 		// This also confirms the attachment is an image.
 		$image_file = wp_get_original_image_path( $attachment_id );
 		$image_meta = wp_get_attachment_metadata( $attachment_id );
 
 		if (
 			! $image_meta ||
 			! $image_file ||
 			! wp_image_file_matches_image_meta( $request['src'], $image_meta, $attachment_id )
 		) {
 			return new WP_Error(
 				'rest_unknown_attachment',
 				__( 'Unable to get meta information for file.' ),
 				array( 'status' => 404 )
 			);
 		}
 
 		$supported_types = array( 'image/jpeg', 'image/png', 'image/gif', 'image/webp' );
 		$mime_type       = get_post_mime_type( $attachment_id );
 		if ( ! in_array( $mime_type, $supported_types, true ) ) {
 			return new WP_Error(
 				'rest_cannot_edit_file_type',
 				__( 'This type of file cannot be edited.' ),
 				array( 'status' => 400 )
 			);
 		}
 
 		// The `modifiers` param takes precedence over the older format.
 		if ( isset( $request['modifiers'] ) ) {
 			$modifiers = $request['modifiers'];
 		} else {
 			$modifiers = array();
 
 			if ( ! empty( $request['rotation'] ) ) {
 				$modifiers[] = array(
 					'type' => 'rotate',
 					'args' => array(
 						'angle' => $request['rotation'],
 					),
 				);
 			}
 
 			if ( isset( $request['x'], $request['y'], $request['width'], $request['height'] ) ) {
 				$modifiers[] = array(
 					'type' => 'crop',
 					'args' => array(
 						'left'   => $request['x'],
 						'top'    => $request['y'],
 						'width'  => $request['width'],
 						'height' => $request['height'],
 					),
 				);
 			}
 
 			if ( 0 === count( $modifiers ) ) {
 				return new WP_Error(
 					'rest_image_not_edited',
 					__( 'The image was not edited. Edit the image before applying the changes.' ),
 					array( 'status' => 400 )
 				);
 			}
 		}
 
 		/*
 		 * If the file doesn't exist, attempt a URL fopen on the src link.
 		 * This can occur with certain file replication plugins.
 		 * Keep the original file path to get a modified name later.
 		 */
 		$image_file_to_edit = $image_file;
 		if ( ! file_exists( $image_file_to_edit ) ) {
 			$image_file_to_edit = _load_image_to_edit_path( $attachment_id );
 		}
 
 		$image_editor = wp_get_image_editor( $image_file_to_edit );
 
 		if ( is_wp_error( $image_editor ) ) {
 			return new WP_Error(
 				'rest_unknown_image_file_type',
 				__( 'Unable to edit this image.' ),
 				array( 'status' => 500 )
 			);
 		}
 
 		foreach ( $modifiers as $modifier ) {
 			$args = $modifier['args'];
 			switch ( $modifier['type'] ) {
 				case 'rotate':
 					// Rotation direction: clockwise vs. counter clockwise.
 					$rotate = 0 - $args['angle'];
 
 					if ( 0 !== $rotate ) {
 						$result = $image_editor->rotate( $rotate );
 
 						if ( is_wp_error( $result ) ) {
 							return new WP_Error(
 								'rest_image_rotation_failed',
 								__( 'Unable to rotate this image.' ),
 								array( 'status' => 500 )
 							);
 						}
 					}
 
 					break;
 
 				case 'crop':
 					$size = $image_editor->get_size();
 
 					$crop_x = round( ( $size['width'] * $args['left'] ) / 100.0 );
 					$crop_y = round( ( $size['height'] * $args['top'] ) / 100.0 );
 					$width  = round( ( $size['width'] * $args['width'] ) / 100.0 );
 					$height = round( ( $size['height'] * $args['height'] ) / 100.0 );
 
 					if ( $size['width'] !== $width && $size['height'] !== $height ) {
 						$result = $image_editor->crop( $crop_x, $crop_y, $width, $height );
 
 						if ( is_wp_error( $result ) ) {
 							return new WP_Error(
 								'rest_image_crop_failed',
 								__( 'Unable to crop this image.' ),
 								array( 'status' => 500 )
 							);
 						}
 					}
 
 					break;
 
 			}
 		}
 
 		// Calculate the file name.
 		$image_ext  = pathinfo( $image_file, PATHINFO_EXTENSION );
 		$image_name = wp_basename( $image_file, ".{$image_ext}" );
 
 		// Do not append multiple `-edited` to the file name.
 		// The user may be editing a previously edited image.
 		if ( preg_match( '/-edited(-\d+)?$/', $image_name ) ) {
 			// Remove any `-1`, `-2`, etc. `wp_unique_filename()` will add the proper number.
 			$image_name = preg_replace( '/-edited(-\d+)?$/', '-edited', $image_name );
 		} else {
 			// Append `-edited` before the extension.
 			$image_name .= '-edited';
 		}
 
 		$filename = "{$image_name}.{$image_ext}";
 
 		// Create the uploads sub-directory if needed.
 		$uploads = wp_upload_dir();
 
 		// Make the file name unique in the (new) upload directory.
 		$filename = wp_unique_filename( $uploads['path'], $filename );
 
 		// Save to disk.
 		$saved = $image_editor->save( $uploads['path'] . "/$filename" );
 
 		if ( is_wp_error( $saved ) ) {
 			return $saved;
 		}
 
 		// Create new attachment post.
 		$new_attachment_post = array(
 			'post_mime_type' => $saved['mime-type'],
 			'guid'           => $uploads['url'] . "/$filename",
 			'post_title'     => $image_name,
 			'post_content'   => '',
 		);
 
 		// Copy post_content, post_excerpt, and post_title from the edited image's attachment post.
 		$attachment_post = get_post( $attachment_id );
 
 		if ( $attachment_post ) {
 			$new_attachment_post['post_content'] = $attachment_post->post_content;
 			$new_attachment_post['post_excerpt'] = $attachment_post->post_excerpt;
 			$new_attachment_post['post_title']   = $attachment_post->post_title;
 		}
 
 		$new_attachment_id = wp_insert_attachment( wp_slash( $new_attachment_post ), $saved['path'], 0, true );
 
 		if ( is_wp_error( $new_attachment_id ) ) {
 			if ( 'db_update_error' === $new_attachment_id->get_error_code() ) {
 				$new_attachment_id->add_data( array( 'status' => 500 ) );
 			} else {
 				$new_attachment_id->add_data( array( 'status' => 400 ) );
 			}
 
 			return $new_attachment_id;
 		}
 
 		// Copy the image alt text from the edited image.
 		$image_alt = get_post_meta( $attachment_id, '_wp_attachment_image_alt', true );
 
 		if ( ! empty( $image_alt ) ) {
 			// update_post_meta() expects slashed.
 			update_post_meta( $new_attachment_id, '_wp_attachment_image_alt', wp_slash( $image_alt ) );
 		}
 
 		if ( defined( 'REST_REQUEST' ) && REST_REQUEST ) {
 			// Set a custom header with the attachment_id.
 			// Used by the browser/client to resume creating image sub-sizes after a PHP fatal error.
 			header( 'X-WP-Upload-Attachment-ID: ' . $new_attachment_id );
 		}
 
 		// Generate image sub-sizes and meta.
 		$new_image_meta = wp_generate_attachment_metadata( $new_attachment_id, $saved['path'] );
 
 		// Copy the EXIF metadata from the original attachment if not generated for the edited image.
 		if ( isset( $image_meta['image_meta'] ) && isset( $new_image_meta['image_meta'] ) && is_array( $new_image_meta['image_meta'] ) ) {
 			// Merge but skip empty values.
 			foreach ( (array) $image_meta['image_meta'] as $key => $value ) {
 				if ( empty( $new_image_meta['image_meta'][ $key ] ) && ! empty( $value ) ) {
 					$new_image_meta['image_meta'][ $key ] = $value;
 				}
 			}
 		}
 
 		// Reset orientation. At this point the image is edited and orientation is correct.
 		if ( ! empty( $new_image_meta['image_meta']['orientation'] ) ) {
 			$new_image_meta['image_meta']['orientation'] = 1;
 		}
 
 		// The attachment_id may change if the site is exported and imported.
 		$new_image_meta['parent_image'] = array(
 			'attachment_id' => $attachment_id,
 			// Path to the originally uploaded image file relative to the uploads directory.
 			'file'          => _wp_relative_upload_path( $image_file ),
 		);
 
 		/**
 		 * Filters the meta data for the new image created by editing an existing image.
 		 *
 		 * @since 5.5.0
 		 *
 		 * @param array $new_image_meta    Meta data for the new image.
 		 * @param int   $new_attachment_id Attachment post ID for the new image.
 		 * @param int   $attachment_id     Attachment post ID for the edited (parent) image.
 		 */
 		$new_image_meta = apply_filters( 'wp_edited_image_metadata', $new_image_meta, $new_attachment_id, $attachment_id );
 
 		wp_update_attachment_metadata( $new_attachment_id, $new_image_meta );
 
 		$response = $this->prepare_item_for_response( get_post( $new_attachment_id ), $request );
 		$response->set_status( 201 );
 		$response->header( 'Location', rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, $new_attachment_id ) ) );
 
 		return $response;
 	}
 
 	/**
 	 * Prepares a single attachment for create or update.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param WP_REST_Request $request Request object.
 	 * @return stdClass|WP_Error Post object.
 	 */
 	protected function prepare_item_for_database( $request ) {
 		$prepared_attachment = parent::prepare_item_for_database( $request );
 
 		// Attachment caption (post_excerpt internally).
 		if ( isset( $request['caption'] ) ) {
 			if ( is_string( $request['caption'] ) ) {
 				$prepared_attachment->post_excerpt = $request['caption'];
 			} elseif ( isset( $request['caption']['raw'] ) ) {
 				$prepared_attachment->post_excerpt = $request['caption']['raw'];
 			}
 		}
 
 		// Attachment description (post_content internally).
 		if ( isset( $request['description'] ) ) {
 			if ( is_string( $request['description'] ) ) {
 				$prepared_attachment->post_content = $request['description'];
 			} elseif ( isset( $request['description']['raw'] ) ) {
 				$prepared_attachment->post_content = $request['description']['raw'];
 			}
 		}
 
 		if ( isset( $request['post'] ) ) {
 			$prepared_attachment->post_parent = (int) $request['post'];
 		}
 
 		return $prepared_attachment;
 	}
 
 	/**
 	 * Prepares a single attachment output for response.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param WP_Post         $post    Attachment object.
 	 * @param WP_REST_Request $request Request object.
 	 * @return WP_REST_Response Response object.
 	 */
 	public function prepare_item_for_response( $post, $request ) {
 		$response = parent::prepare_item_for_response( $post, $request );
 		$fields   = $this->get_fields_for_response( $request );
 		$data     = $response->get_data();
 
 		if ( in_array( 'description', $fields, true ) ) {
 			$data['description'] = array(
 				'raw'      => $post->post_content,
 				/** This filter is documented in wp-includes/post-template.php */
 				'rendered' => apply_filters( 'the_content', $post->post_content ),
 			);
 		}
 
 		if ( in_array( 'caption', $fields, true ) ) {
 			/** This filter is documented in wp-includes/post-template.php */
 			$caption = apply_filters( 'get_the_excerpt', $post->post_excerpt, $post );
 
 			/** This filter is documented in wp-includes/post-template.php */
 			$caption = apply_filters( 'the_excerpt', $caption );
 
 			$data['caption'] = array(
 				'raw'      => $post->post_excerpt,
 				'rendered' => $caption,
 			);
 		}
 
 		if ( in_array( 'alt_text', $fields, true ) ) {
 			$data['alt_text'] = get_post_meta( $post->ID, '_wp_attachment_image_alt', true );
 		}
 
 		if ( in_array( 'media_type', $fields, true ) ) {
 			$data['media_type'] = wp_attachment_is_image( $post->ID ) ? 'image' : 'file';
 		}
 
 		if ( in_array( 'mime_type', $fields, true ) ) {
 			$data['mime_type'] = $post->post_mime_type;
 		}
 
 		if ( in_array( 'media_details', $fields, true ) ) {
 			$data['media_details'] = wp_get_attachment_metadata( $post->ID );
 
 			// Ensure empty details is an empty object.
 			if ( empty( $data['media_details'] ) ) {
 				$data['media_details'] = new stdClass;
 			} elseif ( ! empty( $data['media_details']['sizes'] ) ) {
 
 				foreach ( $data['media_details']['sizes'] as $size => &$size_data ) {
 
 					if ( isset( $size_data['mime-type'] ) ) {
 						$size_data['mime_type'] = $size_data['mime-type'];
 						unset( $size_data['mime-type'] );
 					}
 
 					// Use the same method image_downsize() does.
 					$image_src = wp_get_attachment_image_src( $post->ID, $size );
 					if ( ! $image_src ) {
 						continue;
 					}
 
 					$size_data['source_url'] = $image_src[0];
 				}
 
 				$full_src = wp_get_attachment_image_src( $post->ID, 'full' );
 
 				if ( ! empty( $full_src ) ) {
 					$data['media_details']['sizes']['full'] = array(
 						'file'       => wp_basename( $full_src[0] ),
 						'width'      => $full_src[1],
 						'height'     => $full_src[2],
 						'mime_type'  => $post->post_mime_type,
 						'source_url' => $full_src[0],
 					);
 				}
 			} else {
 				$data['media_details']['sizes'] = new stdClass;
 			}
 		}
 
 		if ( in_array( 'post', $fields, true ) ) {
 			$data['post'] = ! empty( $post->post_parent ) ? (int) $post->post_parent : null;
 		}
 
 		if ( in_array( 'source_url', $fields, true ) ) {
 			$data['source_url'] = wp_get_attachment_url( $post->ID );
 		}
 
 		if ( in_array( 'missing_image_sizes', $fields, true ) ) {
 			require_once ABSPATH . 'wp-admin/includes/image.php';
 			$data['missing_image_sizes'] = array_keys( wp_get_missing_image_subsizes( $post->ID ) );
 		}
 
 		$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
 
 		$data = $this->filter_response_by_context( $data, $context );
 
 		$links = $response->get_links();
 
 		// Wrap the data in a response object.
 		$response = rest_ensure_response( $data );
 
 		foreach ( $links as $rel => $rel_links ) {
 			foreach ( $rel_links as $link ) {
 				$response->add_link( $rel, $link['href'], $link['attributes'] );
 			}
 		}
 
 		/**
 		 * Filters an attachment returned from the REST API.
 		 *
 		 * Allows modification of the attachment right before it is returned.
 		 *
 		 * @since 4.7.0
 		 *
 		 * @param WP_REST_Response $response The response object.
 		 * @param WP_Post          $post     The original attachment post.
 		 * @param WP_REST_Request  $request  Request used to generate the response.
 		 */
 		return apply_filters( 'rest_prepare_attachment', $response, $post, $request );
 	}
 
 	/**
 	 * Retrieves the attachment's schema, conforming to JSON Schema.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @return array Item schema as an array.
 	 */
 	public function get_item_schema() {
 		if ( $this->schema ) {
 			return $this->add_additional_fields_schema( $this->schema );
 		}
 
 		$schema = parent::get_item_schema();
 
 		$schema['properties']['alt_text'] = array(
 			'description' => __( 'Alternative text to display when attachment is not displayed.' ),
 			'type'        => 'string',
 			'context'     => array( 'view', 'edit', 'embed' ),
 			'arg_options' => array(
 				'sanitize_callback' => 'sanitize_text_field',
 			),
 		);
 
 		$schema['properties']['caption'] = array(
 			'description' => __( 'The attachment caption.' ),
 			'type'        => 'object',
 			'context'     => array( 'view', 'edit', 'embed' ),
 			'arg_options' => array(
 				'sanitize_callback' => null, // Note: sanitization implemented in self::prepare_item_for_database().
 				'validate_callback' => null, // Note: validation implemented in self::prepare_item_for_database().
 			),
 			'properties'  => array(
 				'raw'      => array(
 					'description' => __( 'Caption for the attachment, as it exists in the database.' ),
 					'type'        => 'string',
 					'context'     => array( 'edit' ),
 				),
 				'rendered' => array(
 					'description' => __( 'HTML caption for the attachment, transformed for display.' ),
 					'type'        => 'string',
 					'context'     => array( 'view', 'edit', 'embed' ),
 					'readonly'    => true,
 				),
 			),
 		);
 
 		$schema['properties']['description'] = array(
 			'description' => __( 'The attachment description.' ),
 			'type'        => 'object',
 			'context'     => array( 'view', 'edit' ),
 			'arg_options' => array(
 				'sanitize_callback' => null, // Note: sanitization implemented in self::prepare_item_for_database().
 				'validate_callback' => null, // Note: validation implemented in self::prepare_item_for_database().
 			),
 			'properties'  => array(
 				'raw'      => array(
 					'description' => __( 'Description for the attachment, as it exists in the database.' ),
 					'type'        => 'string',
 					'context'     => array( 'edit' ),
 				),
 				'rendered' => array(
 					'description' => __( 'HTML description for the attachment, transformed for display.' ),
 					'type'        => 'string',
 					'context'     => array( 'view', 'edit' ),
 					'readonly'    => true,
 				),
 			),
 		);
 
 		$schema['properties']['media_type'] = array(
 			'description' => __( 'Attachment type.' ),
 			'type'        => 'string',
 			'enum'        => array( 'image', 'file' ),
 			'context'     => array( 'view', 'edit', 'embed' ),
 			'readonly'    => true,
 		);
 
 		$schema['properties']['mime_type'] = array(
 			'description' => __( 'The attachment MIME type.' ),
 			'type'        => 'string',
 			'context'     => array( 'view', 'edit', 'embed' ),
 			'readonly'    => true,
 		);
 
 		$schema['properties']['media_details'] = array(
 			'description' => __( 'Details about the media file, specific to its type.' ),
 			'type'        => 'object',
 			'context'     => array( 'view', 'edit', 'embed' ),
 			'readonly'    => true,
 		);
 
 		$schema['properties']['post'] = array(
 			'description' => __( 'The ID for the associated post of the attachment.' ),
 			'type'        => 'integer',
 			'context'     => array( 'view', 'edit' ),
 		);
 
 		$schema['properties']['source_url'] = array(
 			'description' => __( 'URL to the original attachment file.' ),
 			'type'        => 'string',
 			'format'      => 'uri',
 			'context'     => array( 'view', 'edit', 'embed' ),
 			'readonly'    => true,
 		);
 
 		$schema['properties']['missing_image_sizes'] = array(
 			'description' => __( 'List of the missing image sizes of the attachment.' ),
 			'type'        => 'array',
 			'items'       => array( 'type' => 'string' ),
 			'context'     => array( 'edit' ),
 			'readonly'    => true,
 		);
 
 		unset( $schema['properties']['password'] );
 
 		$this->schema = $schema;
 
 		return $this->add_additional_fields_schema( $this->schema );
 	}
 
 	/**
 	 * Handles an upload via raw POST data.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param array $data    Supplied file data.
 	 * @param array $headers HTTP headers from the request.
 	 * @return array|WP_Error Data from wp_handle_sideload().
 	 */
 	protected function upload_from_data( $data, $headers ) {
 		if ( empty( $data ) ) {
 			return new WP_Error(
 				'rest_upload_no_data',
 				__( 'No data supplied.' ),
 				array( 'status' => 400 )
 			);
 		}
 
 		if ( empty( $headers['content_type'] ) ) {
 			return new WP_Error(
 				'rest_upload_no_content_type',
 				__( 'No Content-Type supplied.' ),
 				array( 'status' => 400 )
 			);
 		}
 
 		if ( empty( $headers['content_disposition'] ) ) {
 			return new WP_Error(
 				'rest_upload_no_content_disposition',
 				__( 'No Content-Disposition supplied.' ),
 				array( 'status' => 400 )
 			);
 		}
 
 		$filename = self::get_filename_from_disposition( $headers['content_disposition'] );
 
 		if ( empty( $filename ) ) {
 			return new WP_Error(
 				'rest_upload_invalid_disposition',
 				__( 'Invalid Content-Disposition supplied. Content-Disposition needs to be formatted as `attachment; filename="image.png"` or similar.' ),
 				array( 'status' => 400 )
 			);
 		}
 
 		if ( ! empty( $headers['content_md5'] ) ) {
 			$content_md5 = array_shift( $headers['content_md5'] );
 			$expected    = trim( $content_md5 );
 			$actual      = md5( $data );
 
 			if ( $expected !== $actual ) {
 				return new WP_Error(
 					'rest_upload_hash_mismatch',
 					__( 'Content hash did not match expected.' ),
 					array( 'status' => 412 )
 				);
 			}
 		}
 
 		// Get the content-type.
 		$type = array_shift( $headers['content_type'] );
 
 		// Include filesystem functions to get access to wp_tempnam() and wp_handle_sideload().
 		require_once ABSPATH . 'wp-admin/includes/file.php';
 
 		// Save the file.
 		$tmpfname = wp_tempnam( $filename );
 
 		$fp = fopen( $tmpfname, 'w+' );
 
 		if ( ! $fp ) {
 			return new WP_Error(
 				'rest_upload_file_error',
 				__( 'Could not open file handle.' ),
 				array( 'status' => 500 )
 			);
 		}
 
 		fwrite( $fp, $data );
 		fclose( $fp );
 
 		// Now, sideload it in.
 		$file_data = array(
 			'error'    => null,
 			'tmp_name' => $tmpfname,
 			'name'     => $filename,
 			'type'     => $type,
 		);
 
 		$size_check = self::check_upload_size( $file_data );
 		if ( is_wp_error( $size_check ) ) {
 			return $size_check;
 		}
 
 		$overrides = array(
 			'test_form' => false,
 		);
 
 		$sideloaded = wp_handle_sideload( $file_data, $overrides );
 
 		if ( isset( $sideloaded['error'] ) ) {
 			@unlink( $tmpfname );
 
 			return new WP_Error(
 				'rest_upload_sideload_error',
 				$sideloaded['error'],
 				array( 'status' => 500 )
 			);
 		}
 
 		return $sideloaded;
 	}
 
 	/**
 	 * Parses filename from a Content-Disposition header value.
 	 *
 	 * As per RFC6266:
 	 *
 	 *     content-disposition = "Content-Disposition" ":"
 	 *                            disposition-type *( ";" disposition-parm )
 	 *
 	 *     disposition-type    = "inline" | "attachment" | disp-ext-type
 	 *                         ; case-insensitive
 	 *     disp-ext-type       = token
 	 *
 	 *     disposition-parm    = filename-parm | disp-ext-parm
 	 *
 	 *     filename-parm       = "filename" "=" value
 	 *                         | "filename*" "=" ext-value
 	 *
 	 *     disp-ext-parm       = token "=" value
 	 *                         | ext-token "=" ext-value
 	 *     ext-token           = <the characters in token, followed by "*">
 	 *
 	 * @since 4.7.0
 	 *
 	 * @link https://tools.ietf.org/html/rfc2388
 	 * @link https://tools.ietf.org/html/rfc6266
 	 *
 	 * @param string[] $disposition_header List of Content-Disposition header values.
 	 * @return string|null Filename if available, or null if not found.
 	 */
 	public static function get_filename_from_disposition( $disposition_header ) {
 		// Get the filename.
 		$filename = null;
 
 		foreach ( $disposition_header as $value ) {
 			$value = trim( $value );
 
 			if ( strpos( $value, ';' ) === false ) {
 				continue;
 			}
 
 			list( $type, $attr_parts ) = explode( ';', $value, 2 );
 
 			$attr_parts = explode( ';', $attr_parts );
 			$attributes = array();
 
 			foreach ( $attr_parts as $part ) {
 				if ( strpos( $part, '=' ) === false ) {
 					continue;
 				}
 
 				list( $key, $value ) = explode( '=', $part, 2 );
 
 				$attributes[ trim( $key ) ] = trim( $value );
 			}
 
 			if ( empty( $attributes['filename'] ) ) {
 				continue;
 			}
 
 			$filename = trim( $attributes['filename'] );
 
 			// Unquote quoted filename, but after trimming.
 			if ( substr( $filename, 0, 1 ) === '"' && substr( $filename, -1, 1 ) === '"' ) {
 				$filename = substr( $filename, 1, -1 );
 			}
 		}
 
 		return $filename;
 	}
 
 	/**
 	 * Retrieves the query params for collections of attachments.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @return array Query parameters for the attachment collection as an array.
 	 */
 	public function get_collection_params() {
 		$params                            = parent::get_collection_params();
 		$params['status']['default']       = 'inherit';
 		$params['status']['items']['enum'] = array( 'inherit', 'private', 'trash' );
 		$media_types                       = $this->get_media_types();
 
 		$params['media_type'] = array(
 			'default'     => null,
 			'description' => __( 'Limit result set to attachments of a particular media type.' ),
 			'type'        => 'string',
 			'enum'        => array_keys( $media_types ),
 		);
 
 		$params['mime_type'] = array(
 			'default'     => null,
 			'description' => __( 'Limit result set to attachments of a particular MIME type.' ),
 			'type'        => 'string',
 		);
 
 		return $params;
 	}
 
 	/**
 	 * Handles an upload via multipart/form-data ($_FILES).
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param array $files   Data from the `$_FILES` superglobal.
 	 * @param array $headers HTTP headers from the request.
 	 * @return array|WP_Error Data from wp_handle_upload().
 	 */
 	protected function upload_from_file( $files, $headers ) {
 		if ( empty( $files ) ) {
 			return new WP_Error(
 				'rest_upload_no_data',
 				__( 'No data supplied.' ),
 				array( 'status' => 400 )
 			);
 		}
 
 		// Verify hash, if given.
 		if ( ! empty( $headers['content_md5'] ) ) {
 			$content_md5 = array_shift( $headers['content_md5'] );
 			$expected    = trim( $content_md5 );
 			$actual      = md5_file( $files['file']['tmp_name'] );
 
 			if ( $expected !== $actual ) {
 				return new WP_Error(
 					'rest_upload_hash_mismatch',
 					__( 'Content hash did not match expected.' ),
 					array( 'status' => 412 )
 				);
 			}
 		}
 
 		// Pass off to WP to handle the actual upload.
 		$overrides = array(
 			'test_form' => false,
 		);
 
 		// Bypasses is_uploaded_file() when running unit tests.
 		if ( defined( 'DIR_TESTDATA' ) && DIR_TESTDATA ) {
 			$overrides['action'] = 'wp_handle_mock_upload';
 		}
 
 		$size_check = self::check_upload_size( $files['file'] );
 		if ( is_wp_error( $size_check ) ) {
 			return $size_check;
 		}
 
 		// Include filesystem functions to get access to wp_handle_upload().
 		require_once ABSPATH . 'wp-admin/includes/file.php';
 
 		$file = wp_handle_upload( $files['file'], $overrides );
 
 		if ( isset( $file['error'] ) ) {
 			return new WP_Error(
 				'rest_upload_unknown_error',
 				$file['error'],
 				array( 'status' => 500 )
 			);
 		}
 
 		return $file;
 	}
 
 	/**
 	 * Retrieves the supported media types.
 	 *
 	 * Media types are considered the MIME type category.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @return array Array of supported media types.
 	 */
 	protected function get_media_types() {
 		$media_types = array();
 
 		foreach ( get_allowed_mime_types() as $mime_type ) {
 			$parts = explode( '/', $mime_type );
 
 			if ( ! isset( $media_types[ $parts[0] ] ) ) {
 				$media_types[ $parts[0] ] = array();
 			}
 
 			$media_types[ $parts[0] ][] = $mime_type;
 		}
 
 		return $media_types;
 	}
 
 	/**
 	 * Determine if uploaded file exceeds space quota on multisite.
 	 *
 	 * Replicates check_upload_size().
 	 *
 	 * @since 4.9.8
 	 *
 	 * @param array $file $_FILES array for a given file.
 	 * @return true|WP_Error True if can upload, error for errors.
 	 */
 	protected function check_upload_size( $file ) {
 		if ( ! is_multisite() ) {
 			return true;
 		}
 
 		if ( get_site_option( 'upload_space_check_disabled' ) ) {
 			return true;
 		}
 
 		$space_left = get_upload_space_available();
 
 		$file_size = filesize( $file['tmp_name'] );
 
 		if ( $space_left < $file_size ) {
 			return new WP_Error(
 				'rest_upload_limited_space',
 				/* translators: %s: Required disk space in kilobytes. */
 				sprintf( __( 'Not enough space to upload. %s KB needed.' ), number_format( ( $file_size - $space_left ) / KB_IN_BYTES ) ),
 				array( 'status' => 400 )
 			);
 		}
 
 		if ( $file_size > ( KB_IN_BYTES * get_site_option( 'fileupload_maxk', 1500 ) ) ) {
 			return new WP_Error(
 				'rest_upload_file_too_big',
 				/* translators: %s: Maximum allowed file size in kilobytes. */
 				sprintf( __( 'This file is too big. Files must be less than %s KB in size.' ), get_site_option( 'fileupload_maxk', 1500 ) ),
 				array( 'status' => 400 )
 			);
 		}
 
 		// Include multisite admin functions to get access to upload_is_user_over_quota().
 		require_once ABSPATH . 'wp-admin/includes/ms.php';
 
 		if ( upload_is_user_over_quota( false ) ) {
 			return new WP_Error(
 				'rest_upload_user_quota_exceeded',
 				__( 'You have used your space quota. Please delete files before uploading.' ),
 				array( 'status' => 400 )
 			);
 		}
 
 		return true;
 	}
 
 	/**
 	 * Gets the request args for the edit item route.
 	 *
 	 * @since 5.5.0
 	 *
 	 * @return array
 	 */
 	protected function get_edit_media_item_args() {
 		return array(
 			'src'       => array(
 				'description' => __( 'URL to the edited image file.' ),
 				'type'        => 'string',
 				'format'      => 'uri',
 				'required'    => true,
 			),
 			'modifiers' => array(
 				'description' => __( 'Array of image edits.' ),
 				'type'        => 'array',
 				'minItems'    => 1,
 				'items'       => array(
 					'description' => __( 'Image edit.' ),
 					'type'        => 'object',
 					'required'    => array(
 						'type',
 						'args',
 					),
 					'oneOf'       => array(
 						array(
 							'title'      => __( 'Rotation' ),
 							'properties' => array(
 								'type' => array(
 									'description' => __( 'Rotation type.' ),
 									'type'        => 'string',
 									'enum'        => array( 'rotate' ),
 								),
 								'args' => array(
 									'description' => __( 'Rotation arguments.' ),
 									'type'        => 'object',
 									'required'    => array(
 										'angle',
 									),
 									'properties'  => array(
 										'angle' => array(
 											'description' => __( 'Angle to rotate clockwise in degrees.' ),
 											'type'        => 'number',
 										),
 									),
 								),
 							),
 						),
 						array(
 							'title'      => __( 'Crop' ),
 							'properties' => array(
 								'type' => array(
 									'description' => __( 'Crop type.' ),
 									'type'        => 'string',
 									'enum'        => array( 'crop' ),
 								),
 								'args' => array(
 									'description' => __( 'Crop arguments.' ),
 									'type'        => 'object',
 									'required'    => array(
 										'left',
 										'top',
 										'width',
 										'height',
 									),
 									'properties'  => array(
 										'left'   => array(
 											'description' => __( 'Horizontal position from the left to begin the crop as a percentage of the image width.' ),
 											'type'        => 'number',
 										),
 										'top'    => array(
 											'description' => __( 'Vertical position from the top to begin the crop as a percentage of the image height.' ),
 											'type'        => 'number',
 										),
 										'width'  => array(
 											'description' => __( 'Width of the crop as a percentage of the image width.' ),
 											'type'        => 'number',
 										),
 										'height' => array(
 											'description' => __( 'Height of the crop as a percentage of the image height.' ),
 											'type'        => 'number',
 										),
 									),
 								),
 							),
 						),
 					),
 				),
 			),
 			'rotation'  => array(
 				'description'      => __( 'The amount to rotate the image clockwise in degrees. DEPRECATED: Use `modifiers` instead.' ),
 				'type'             => 'integer',
 				'minimum'          => 0,
 				'exclusiveMinimum' => true,
 				'maximum'          => 360,
 				'exclusiveMaximum' => true,
 			),
 			'x'         => array(
 				'description' => __( 'As a percentage of the image, the x position to start the crop from. DEPRECATED: Use `modifiers` instead.' ),
 				'type'        => 'number',
 				'minimum'     => 0,
 				'maximum'     => 100,
 			),
 			'y'         => array(
 				'description' => __( 'As a percentage of the image, the y position to start the crop from. DEPRECATED: Use `modifiers` instead.' ),
 				'type'        => 'number',
 				'minimum'     => 0,
 				'maximum'     => 100,
 			),
 			'width'     => array(
 				'description' => __( 'As a percentage of the image, the width to crop the image to. DEPRECATED: Use `modifiers` instead.' ),
 				'type'        => 'number',
 				'minimum'     => 0,
 				'maximum'     => 100,
 			),
 			'height'    => array(
 				'description' => __( 'As a percentage of the image, the height to crop the image to. DEPRECATED: Use `modifiers` instead.' ),
 				'type'        => 'number',
 				'minimum'     => 0,
 				'maximum'     => 100,
 			),
 		);
 	}
 
 }