/**

* Register the post-related routes

*

* @param array $routes Existing routes

* @return array Modified routes

*/

public function register_routes( $routes ) {

$route = JP_API_ROUTE;

$routes[] = array(

//endpoints

"/{$route}/tax-query" => array(

array(

array( $this, 'tax_query' ), WP_JSON_Server::READABLE | WP_JSON_Server::ACCEPT_JSON

),

),

);

return $routes;

}

public function tax_query( $data ) {

$allowed = array( 'post_type', 'tax_query' );

foreach( $data as $key => $value ) {

if ( ! in_array( $key, $allowed ) ) {

unset( $data[ $key ] );

}

}

if ( ! is_array( $data ) || empty( $data ) || ! isset( $data[ 'tax_query' ] ) ) {

return new WP_Error( 'jp_api_tax_query', __( 'Invalid tax query.' ), array( 'status' => 500 ) );

}

$post_query = new WP_Query();

$posts_list = $post_query->query( $data );

$response = new WP_JSON_Response();

$response->query_navigation_headers( $post_query );

if ( ! $posts_list ) {

$response->set_data( array() );

return $response;

}

// holds all the posts data

$struct = array();

$response->header( 'Last-Modified', mysql2date( 'D, d M Y H:i:s', get_lastpostmodified( 'GMT' ), 0 ).' GMT' );

foreach ( $posts_list as $post ) {

$post = get_object_vars( $post );

// Do we have permission to read this post?

if ( json_check_post_permission( $post, 'read' ) ) {

continue;

}

$response->link_header( 'item', json_url( '/posts/' . $post['ID'] ), array( 'title' => $post['post_title'] ) );

$post_data = $this->prepare_post( $post, 'view' );

if ( is_wp_error( $post_data ) ) {

continue;

}

$struct[] = $post_data;

}

$response->set_data( $struct );

return $response;

}