Prevent Double Click Submissions for Restaurant Reservations

prevent-double-submission-for-rtb.php

<?php
/**
 * Plugin Name: Prevent Double Click Submissions for Restaurant Reservations
 * Plugin URI: http://themeofthecrop.com
 * Description: Disables the submit button when it is clicked.
 * Version: 1.0
 * Author: Theme of the Crop
 * Author URI: http://themeofthecrop.com
 * License:     GNU General Public License v2.0 or later
 * License URI: http://www.gnu.org/licenses/gpl-2.0.html
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License as published by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write
 * to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */
defined( 'ABSPATH' ) || exit;

add_filter( 'wp_footer', 'pdcsfrtb_disable_button' );
function pdcsfrtb_disable_button( $booking ) {
	?>

	<script type="text/javascript">
		jQuery( document ).ready( function ( $ ) {
			$('.rtb-booking-form form').submit(function() {
				$(this).find('button[type="submit"]').prop('disabled', 'disabled'); return true;
			});
		} );
	</script>

	<?php
}

This feature will be part of the plugin from v1.7.4.