<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2023 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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declare(strict_types=1);
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namespace think\model\concern;
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use ReflectionClass;
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use think\db\exception\ModelEventException;
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use think\helper\Str;
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/**
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* 模型事件处理.
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*/
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trait ModelEvent
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{
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/**
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* Event对象
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*
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* @var object
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*/
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protected static $event;
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/**
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* 是否需要事件响应.
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*
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* @var bool
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*/
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protected $withEvent = true;
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/**
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* 事件观察者.
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*
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* @var string
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*/
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protected $eventObserver;
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/**
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* 设置Event对象
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*
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* @param object $event Event对象
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*
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* @return void
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*/
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public static function setEvent($event)
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{
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self::$event = $event;
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}
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/**
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* 当前操作的事件响应.
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*
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* @param bool $event 是否需要事件响应
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*
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* @return $this
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*/
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public function withEvent(bool $event)
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{
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$this->withEvent = $event;
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return $this;
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}
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/**
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* 触发事件.
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*
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* @param string $event 事件名
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*
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* @return bool
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*/
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protected function trigger(string $event): bool
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{
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if (!$this->withEvent) {
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return true;
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}
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$call = 'on' . Str::studly($event);
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try {
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if ($this->eventObserver) {
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$reflect = new ReflectionClass($this->eventObserver);
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$observer = $reflect->newinstance();
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} else {
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$observer = static::class;
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}
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if (method_exists($observer, $call)) {
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$result = $this->invoke([$observer, $call], [$this]);
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} elseif (is_object(self::$event) && method_exists(self::$event, 'trigger')) {
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$result = self::$event->trigger(static::class . '.' . $event, $this);
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$result = empty($result) ? true : end($result);
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} else {
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$result = true;
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}
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return !(false === $result);
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} catch (ModelEventException $e) {
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return false;
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}
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}
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}
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