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

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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.



git-svn-id: https://develop.svn.wordpress.org/trunk@43087 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Gary Pendergast
2018-05-02 01:24:30 +00:00
parent 1a4e28818f
commit 4ac3f4c13a
22 changed files with 526 additions and 167 deletions
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106
src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php
View File

@@ -284,62 +284,84 @@ class WP_REST_Attachments_Controller extends WP_REST_Posts_Controller {
*/
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 ),
);
$caption = apply_filters( 'the_excerpt', apply_filters( 'get_the_excerpt', $post->post_excerpt, $post ) );
$data['caption'] = array(
'raw' => $post->post_excerpt,
'rendered' => $caption,
);
}
/** 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,
);
if ( in_array( 'alt_text', $fields, true ) ) {
$data['alt_text'] = get_post_meta( $post->ID, '_wp_attachment_image_alt', true );
}
$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 );
if ( in_array( 'media_type', $fields, true ) ) {
$data['media_type'] = wp_attachment_is_image( $post->ID ) ? 'image' : 'file';
}
// Ensure empty details is an empty object.
if ( empty( $data['media_details'] ) ) {
$data['media_details'] = new stdClass;
} elseif ( ! empty( $data['media_details']['sizes'] ) ) {
if ( in_array( 'mime_type', $fields, true ) ) {
$data['mime_type'] = $post->post_mime_type;
}
foreach ( $data['media_details']['sizes'] as $size => &$size_data ) {
if ( in_array( 'media_details', $fields, true ) ) {
$data['media_details'] = wp_get_attachment_metadata( $post->ID );
if ( isset( $size_data['mime-type'] ) ) {
$size_data['mime_type'] = $size_data['mime-type'];
unset( $size_data['mime-type'] );
// 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];
} else {
$data['media_details']['sizes'] = new stdClass;
}
}
$full_src = wp_get_attachment_image_src( $post->ID, 'full' );
if ( in_array( 'post', $fields, true ) ) {
$data['post'] = ! empty( $post->post_parent ) ? (int) $post->post_parent : null;
}
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( 'source_url', $fields, true ) ) {
$data['source_url'] = wp_get_attachment_url( $post->ID );
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';