static function viewCatalogUrl() {

		if ( isset( $_REQUEST['user_id'] ) ) {

			if ( false === current_user_can( 'edit_user', (int) $_REQUEST['user_id'] ) ) {
				wp_die( __( 'You do not have permission to do that.' ) );
			}

			$u = get_userdata( (int) $_REQUEST['user_id'] );
			if ( false === $u ) {
				wp_die( __( 'The requested user does not exist.' ) );
			}

			$user_login = get_userdata( (int) $_REQUEST['user_id'] )->user_login;
		} else {
			$user_login = get_userdata( get_current_user_id() )->user_login;
		}

		$view_url = network_home_url( "/catalog/$user_login" );

		return $view_url;
	}