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class.route.php
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<?php
/**
* A class for registering network settings with the WP API on the control blog.
*
* @package WordPress
* @subpackage CSS_Tricks_WP_API_Control
* @since CSS_Tricks_WP_API_Control 1.0
*/
function css_tricks_wp_api_route_init() {
new CSS_Tricks_WP_API_Control_Route;
}
add_action( 'plugins_loaded', 'css_tricks_wp_api_route_init' );
class CSS_Tricks_WP_API_Control_Route {
public function __construct() {
// Register a new rest route for our plugin.
add_action( 'rest_api_init', array( $this, 'register' ) );
}
/**
* Register a new route with the WP API for getting network options from the control blog.
*
* @return bool True on success, false on error.
*/
function register() {
// A version namespace for making calls to our endpoint.
$version = 'v1';
$out = register_rest_route(
// A namespace for our plugin.
CSS_TRICKS_WP_API_CONTROL . '/' . $version,
// The route for querying network settings.
'/network_settings/',
// An array of args for config'ing our route.
array(
// Our route expects get requests.
'methods' => 'GET',
// Our route handles requests via this cb function.
'callback' => array( $this, 'callback' ),
// Our route handles some url variables.
'args' => array(
// A url variable for the user to specify a meta_key for the option he wishes to grab.
'meta_key' => array(
// You must provide a meta key.
'required' => TRUE,
// Sanizite the meta key.
'validate_callback' => array( $this, 'validate_callback' ),
),
),
// You must pass our permissions cb in order to use this route.
'permission_callback' => array( $this, 'permission_callback' ),
// End the array of args for register_rest_route().
)
// End register_rest_route().
);
return $out;
}
/**
* A validation callback for register_rest_route().
*
* @param string $input The name of the network setting we're querying from the control.
* @return bool Returns TRUE if the meta_key is valid, else FALSE.
*/
function validate_callback( $meta_key ) {
if( sanitize_key( $meta_key ) === $meta_key ) { return TRUE; }
return FALSE;
}
/**
* A permissions callback for register_rest_route().
*
* @return bool Returns TRUE if the user can update core, else FALSE.
*/
function permission_callback() {
return current_user_can( 'update_core' );
}
/**
* A callback function for register_rest_route.
*
* @param array $args An array of url variables that the user might enter.
* @return mixed Returns the value for a network setting.
*/
function callback( $args ) {
// Grab the name of the network setting we're grabbing from the control.
$meta_key = $args -> get_param( 'meta_key' );
// Grab the value of the network setting we're grabbing from the control.
$out = get_site_option( $meta_key );
return $out;
}
}