Changeset 43087 for trunk/src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php

Timestamp:

05/02/2018 01:24:30 AM (7 years ago)

Author:

pento

Message:

REST API: Filter responses based on the _fields parameter, before data is processed.

Historically, the REST API would generate the entire response object, including running expensive filters, then it would apply the _fields parameter, discarding the fields that weren't specificed.

This change causes _fields to be applied earlier, so that only requested fields are processed.

Props danielbachhuber.
See #43874.

File:

• trunk/src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php (modified) (1 diff)

trunk/src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php

@@ -285 +285 @@
     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();
 
-        $data['description'] = array(
-            'raw'      => $post->post_content,
+        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 */
-            'rendered' => apply_filters( 'the_content', $post->post_content ),
-        );
-
-        /** This filter is documented in wp-includes/post-template.php */
-        $caption         = apply_filters( 'the_excerpt', apply_filters( 'get_the_excerpt', $post->post_excerpt, $post ) );
-        $data['caption'] = array(
-            'raw'      => $post->post_excerpt,
-            'rendered' => $caption,
-        );
-
-        $data['alt_text']      = get_post_meta( $post->ID, '_wp_attachment_image_alt', true );
-        $data['media_type']    = wp_attachment_is_image( $post->ID ) ? 'image' : 'file';
-        $data['mime_type']     = $post->post_mime_type;
-        $data['media_details'] = wp_get_attachment_metadata( $post->ID );
-        $data['post']          = ! empty( $post->post_parent ) ? (int) $post->post_parent : null;
-        $data['source_url']    = wp_get_attachment_url( $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'] );
+            $caption         = apply_filters( 'the_excerpt', apply_filters( 'get_the_excerpt', $post->post_excerpt, $post ) );
+            $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];
                 }
 
-                // Use the same method image_downsize() does.
-                $image_src = wp_get_attachment_image_src( $post->ID, $size );
-                if ( ! $image_src ) {
-                    continue;
+                $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],
+                    );
                 }
-
-                $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;
+            } 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 );
         }