Custom posts ignore the normal filter – have a look at class-wp-json-pages.php to see how to do build one for custom posts.
<?php
/**
* Page post type handlers
*
* @package WordPress
* @subpackage JSON API
*/
/**
* Page post type handlers
*
* This class serves as a small addition on top of the basic post handlers to
* add small functionality on top of the existing API.
*
* In addition, this class serves as a sample implementation of building on top
* of the existing APIs for custom post types.
*
* @package WordPress
* @subpackage JSON API
*/
class WP_JSON_Pages extends WP_JSON_CustomPostType {
/**
* Base route
*
* @var string
*/
protected $base="/pages";
/**
* Post type
*
* @var string
*/
protected $type="page";
/**
* Register the page-related routes
*
* @param array $routes Existing routes
* @return array Modified routes
*/
public function register_routes( $routes ) {
$routes = parent::register_routes( $routes );
$routes = parent::register_revision_routes( $routes );
$routes = parent::register_comment_routes( $routes );
// Add post-by-path routes
$routes[ $this->base . '/(?P<path>.+)'] = array(
array( array( $this, 'get_post_by_path' ), WP_JSON_Server::READABLE ),
array( array( $this, 'edit_post_by_path' ), WP_JSON_Server::EDITABLE | WP_JSON_Server::ACCEPT_JSON ),
array( array( $this, 'delete_post_by_path' ), WP_JSON_Server::DELETABLE ),
);
return $routes;
}
/**
* Retrieve a page by path name
*
* @param string $path
* @param string $context
*
* @return array|WP_Error
*/
public function get_post_by_path( $path, $context="view" ) {
$post = get_page_by_path( $path, ARRAY_A );
if ( empty( $post ) ) {
return new WP_Error( 'json_post_invalid_id', __( 'Invalid post ID.' ), array( 'status' => 404 ) );
}
return $this->get_post( $post['ID'], $context );
}
/**
* Edit a page by path name
*
* @param $path
* @param $data
* @param array $_headers
*
* @return true|WP_Error
*/
public function edit_post_by_path( $path, $data, $_headers = array() ) {
$post = get_page_by_path( $path, ARRAY_A );
if ( empty( $post ) ) {
return new WP_Error( 'json_post_invalid_id', __( 'Invalid post ID.' ), array( 'status' => 404 ) );
}
return $this->edit_post( $post['ID'], $data, $_headers );
}
/**
* Delete a page by path name
*
* @param $path
* @param bool $force
*
* @return true|WP_Error
*/
public function delete_post_by_path( $path, $force = false ) {
$post = get_page_by_path( $path, ARRAY_A );
if ( empty( $post ) ) {
return new WP_Error( 'json_post_invalid_id', __( 'Invalid post ID.' ), array( 'status' => 404 ) );
}
return $this->delete_post( $post['ID'], $force );
}
/**
* Prepare post data
*
* @param array $post The unprepared post data
* @param string $context The context for the prepared post. (view|view-revision|edit|embed|single-parent)
* @return array The prepared post data
*/
protected function prepare_post( $post, $context="view" ) {
$_post = parent::prepare_post( $post, $context );
// Override entity meta keys with the correct links
$_post['meta']['links']['self'] = json_url( $this->base . "https://wordpress.stackexchange.com/" . get_page_uri( $post['ID'] ) );
if ( ! empty( $post['post_parent'] ) ) {
$_post['meta']['links']['up'] = json_url( $this->base . "https://wordpress.stackexchange.com/" . get_page_uri( (int) $post['post_parent'] ) );
}
return apply_filters( 'json_prepare_page', $_post, $post, $context );
}
}
Replace “Pages” with “MyCustomPostTypes” and page with “mycustomposttype”. Just be careful not to rename internal WordPress code that also uses the term page
Note: probably best to add this as a plugin rather than change the JSON-WP-API plugin
/**
* Plugin Name: MyCustom JSON App API
* Description: MyCustomPost handler for the JSON API
* Dependency: This plugin requires JSON-WP-API Plugin!!!!
* Author:
* Author URI:
* Version:
* Plugin URI:
*/