Filters the REST API response to include only an allow-listed set of response object fields.
Parameters
$response
WP_REST_Responserequired- Current response being served.
$server
WP_REST_Serverrequired- ResponseHandler instance (usually WP_REST_Server).
$request
WP_REST_Requestrequired- The request that was used to make current response.
Source
function rest_filter_response_fields( $response, $server, $request ) {
if ( ! isset( $request['_fields'] ) || $response->is_error() ) {
return $response;
}
$data = $response->get_data();
$fields = wp_parse_list( $request['_fields'] );
if ( 0 === count( $fields ) ) {
return $response;
}
// Trim off outside whitespace from the comma delimited list.
$fields = array_map( 'trim', $fields );
// Create nested array of accepted field hierarchy.
$fields_as_keyed = array();
foreach ( $fields as $field ) {
$parts = explode( '.', $field );
$ref = &$fields_as_keyed;
while ( count( $parts ) > 1 ) {
$next = array_shift( $parts );
if ( isset( $ref[ $next ] ) && true === $ref[ $next ] ) {
// Skip any sub-properties if their parent prop is already marked for inclusion.
break 2;
}
$ref[ $next ] = isset( $ref[ $next ] ) ? $ref[ $next ] : array();
$ref = &$ref[ $next ];
}
$last = array_shift( $parts );
$ref[ $last ] = true;
}
if ( wp_is_numeric_array( $data ) ) {
$new_data = array();
foreach ( $data as $item ) {
$new_data[] = _rest_array_intersect_key_recursive( $item, $fields_as_keyed );
}
} else {
$new_data = _rest_array_intersect_key_recursive( $data, $fields_as_keyed );
}
$response->set_data( $new_data );
return $response;
}
Changelog
Version | Description |
---|---|
4.8.0 | Introduced. |
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