方法不更新updated"/>
laravel save\update 方法不更新updated
场景:小型论坛,在帖子的表中维持一个最后一个更新的用户
如果上次评论的用户的和现在这个评论的用户是同一个人 则不会更新updated_at 字段
解决:
先说怎么解决
$last_user_id = $event->comment->user_id; $discussion_id = $event->comment->discussion_id; $updated_at = date('Y-m-d H:i:s'); Discuss::where(['id' => $discussion_id])->update(compact('last_user_id','updated_at'));
解析:
Illuminate\Database\Eloquent\Model #527行
update函数内部调用了save save 调用了performUpdate
/** * Perform a model update operation. * * @param \Illuminate\Database\Eloquent\Builder $query * @return bool */ protected function performUpdate(Builder $query) {// If the updating event returns false, we will cancel the update operation so // developers can hook Validation systems into their models and cancel this // operation if the model does not pass validation. Otherwise, we update. if ($this->fireModelEvent('updating') === false) {return false;}// First we need to create a fresh query instance and touch the creation and // update timestamp on the model which are maintained by us for developer // convenience. Then we will just continue saving the model instances. if ($this->usesTimestamps()) {$this->updateTimestamps();}// Once we have run the update operation, we will fire the "updated" event for // this model instance. This will allow developers to hook into these after // models are updated, giving them a chance to do any special processing. $dirty = $this->getDirty();if (count($dirty) > 0) {$this->setKeysForSaveQuery($query)->update($dirty);$this->fireModelEvent('updated', false);$this->syncChanges();}return true; }
/** * Update the creation and update timestamps. * * @return void */ protected function updateTimestamps() {$time = $this->freshTimestamp();if (! is_null(static::UPDATED_AT) && ! $this->isDirty(static::UPDATED_AT)) {$this->setUpdatedAt($time);}if (! $this->exists && ! $this->isDirty(static::CREATED_AT)) {$this->setCreatedAt($time);} }
/** * Determine if the model or given attribute(s) have been modified. * * @param array|string|null $attributes * @return bool */ public function isDirty($attributes = null) {return $this->hasChanges($this->getDirty(), is_array($attributes) ? $attributes : func_get_args()); }
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laravel save\update 方法不更新updated
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