php 通过添加验证来检查服务提供商是否可用，以防止在WordPress仪表板中预订相同的时间段

Posted 2021-05-05

<?php
/*
Plugin Name: Disallow Duplicate Booking
Plugin URI: https://premium.wpmudev.org/
Description: Don't allow same time slot booking
Author: Lindeni Mahlalela @ WPMUDEV
Author URI: https://premium.wpmudev.org/
License: GPLv2 or later
*/
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}
if ( ! class_exists( 'Disallow_Duplicate_Booking' ) ) {
	class Disallow_Duplicate_Booking {
		private static $_instance = null;
		public static function get_instance() {
			if( is_null( self::$_instance ) ){
				self::$_instance = new Disallow_Duplicate_Booking();
			}
			return self::$_instance;
		}
		private function __construct() {
			add_action( 'appointments_inline_edit', array( $this, 'is_worker_booked' ), 10, 2 );
		}

		public function is_worker_booked( $app_id, $data){
			$worker_args = array(    
				'worker_id' => $data['worker'],
			    'service_id' => $data['service']
			    //,'location_id' => $location
			);

			$start	 = strtotime( $data['date'] . ' ' . $data['time']);
			$service = appointments_get_service( $data['service'] );

			$is_busy = apppointments_is_range_busy( $start, $start + ( $service->duration * 60 ), $worker_args );

			if ( $is_busy ) {
				$result = array(
					'app_id' => $app_id,
					'message' => '<strong style="color:red;">The service provider is not availble on the selected time slot.</strong>'
				);
				wp_send_json( $result );
			}
		}
	}
	add_action( 'plugins_loaded', 'app_disallow_duplaicate_booking' );
	function app_disallow_duplaicate_booking(){
		$GLOBALS['Disallow_Duplicate_Booking'] = Disallow_Duplicate_Booking::get_instance();
	}
}