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<?php /** * REST API: WP_REST_Response class * * @package WordPress * @subpackage REST_API * @since 4.4.0 */ /** * Core class used to implement a REST response object. * * @since 4.4.0 * * @see WP_HTTP_Response */ class WP_REST_Response extends WP_HTTP_Response { /** * Links related to the response. * * @since 4.4.0 * @var array */ protected $links = array(); /** * The route that was to create the response. * * @since 4.4.0 * @var string */ protected $matched_route = ''; /** * The handler that was used to create the response. * * @since 4.4.0 * @var null|array */ protected $matched_handler = null; /** * Adds a link to the response. * * {@internal The $rel parameter is first, as this looks nicer when sending multiple.} * * @since 4.4.0 * * @link https://tools.ietf.org/html/rfc5988 * @link https://www.iana.org/assignments/link-relations/link-relations.xml * * @param string $rel Link relation. Either an IANA registered type, * or an absolute URL. * @param string $href Target URI for the link. * @param array $attributes Optional. Link parameters to send along with the URL. Default empty array. */ public function add_link( $rel, $href, $attributes = array() ) { if ( empty( $this->links[ $rel ] ) ) { $this->links[ $rel ] = array(); } if ( isset( $attributes['href'] ) ) { // Remove the href attribute, as it's used for the main URL. unset( $attributes['href'] ); } $this->links[ $rel ][] = array( 'href' => $href, 'attributes' => $attributes, ); } /** * Removes a link from the response. * * @since 4.4.0 * * @param string $rel Link relation. Either an IANA registered type, or an absolute URL. * @param string|null $href Optional. Only remove links for the relation matching the given href. * Default null. */ public function remove_link( $rel, $href = null ) { if ( ! isset( $this->links[ $rel ] ) ) { return; } if ( $href ) { $this->links[ $rel ] = wp_list_filter( $this->links[ $rel ], array( 'href' => $href ), 'NOT' ); } else { $this->links[ $rel ] = array(); } if ( ! $this->links[ $rel ] ) { unset( $this->links[ $rel ] ); } } /** * Adds multiple links to the response. * * Link data should be an associative array with link relation as the key. * The value can either be an associative array of link attributes * (including `href` with the URL for the response), or a list of these * associative arrays. * * @since 4.4.0 * * @param array $links Map of link relation to list of links. */ public function add_links( $links ) { foreach ( $links as $rel => $set ) { // If it's a single link, wrap with an array for consistent handling. if ( isset( $set['href'] ) ) { $set = array( $set ); } foreach ( $set as $attributes ) { $this->add_link( $rel, $attributes['href'], $attributes ); } } } /** * Retrieves links for the response. * * @since 4.4.0 * * @return array List of links. */ public function get_links() { return $this->links; } /** * Sets a single link header. * * {@internal The $rel parameter is first, as this looks nicer when sending multiple.} * * @since 4.4.0 * * @link https://tools.ietf.org/html/rfc5988 * @link https://www.iana.org/assignments/link-relations/link-relations.xml * * @param string $rel Link relation. Either an IANA registered type, or an absolute URL. * @param string $link Target IRI for the link. * @param array $other Optional. Other parameters to send, as an associative array. * Default empty array. */ public function link_header( $rel, $link, $other = array() ) { $header = '<' . $link . '>; rel="' . $rel . '"'; foreach ( $other as $key => $value ) { if ( 'title' === $key ) { $value = '"' . $value . '"'; } $header .= '; ' . $key . '=' . $value; } $this->header( 'Link', $header, false ); } /** * Retrieves the route that was used. * * @since 4.4.0 * * @return string The matched route. */ public function get_matched_route() { return $this->matched_route; } /** * Sets the route (regex for path) that caused the response. * * @since 4.4.0 * * @param string $route Route name. */ public function set_matched_route( $route ) { $this->matched_route = $route; } /** * Retrieves the handler that was used to generate the response. * * @since 4.4.0 * * @return null|array The handler that was used to create the response. */ public function get_matched_handler() { return $this->matched_handler; } /** * Sets the handler that was responsible for generating the response. * * @since 4.4.0 * * @param array $handler The matched handler. */ public function set_matched_handler( $handler ) { $this->matched_handler = $handler; } /** * Checks if the response is an error, i.e. >= 400 response code. * * @since 4.4.0 * * @return bool Whether the response is an error. */ public function is_error() { return $this->get_status() >= 400; } /** * Retrieves a WP_Error object from the response. * * @since 4.4.0 * * @return WP_Error|null WP_Error or null on not an errored response. */ public function as_error() { if ( ! $this->is_error() ) { return null; } $error = new WP_Error(); if ( is_array( $this->get_data() ) ) { $data = $this->get_data(); $error->add( $data['code'], $data['message'], $data['data'] ); if ( ! empty( $data['additional_errors'] ) ) { foreach ( $data['additional_errors'] as $err ) { $error->add( $err['code'], $err['message'], $err['data'] ); } } } else { $error->add( $this->get_status(), '', array( 'status' => $this->get_status() ) ); } return $error; } /** * Retrieves the CURIEs (compact URIs) used for relations. * * @since 4.5.0 * * @return array Compact URIs. */ public function get_curies() { $curies = array( array( 'name' => 'wp', 'href' => 'https://api.w.org/{rel}', 'templated' => true, ), ); /** * Filters extra CURIEs available on REST API responses. * * CURIEs allow a shortened version of URI relations. This allows a more * usable form for custom relations than using the full URI. These work * similarly to how XML namespaces work. * * Registered CURIES need to specify a name and URI template. This will * automatically transform URI relations into their shortened version. * The shortened relation follows the format `{name}:{rel}`. `{rel}` in * the URI template will be replaced with the `{rel}` part of the * shortened relation. * * For example, a CURIE with name `example` and URI template * `http://w.org/{rel}` would transform a `http://w.org/term` relation * into `example:term`. * * Well-behaved clients should expand and normalize these back to their * full URI relation, however some naive clients may not resolve these * correctly, so adding new CURIEs may break backward compatibility. * * @since 4.5.0 * * @param array $additional Additional CURIEs to register with the REST API. */ $additional = apply_filters( 'rest_response_link_curies', array() ); return array_merge( $curies, $additional ); } }
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