laravel Eloquent 模型更新事件未触发
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laravel Eloquent model update event is not fired
提问by northblue
Merry Christmas guys!
小伙伴们圣诞快乐！
I am new to Laravel. Just had a beginner's question, when I am trying to use service provider and model event to log the update information.
我是 Laravel 的新手。刚刚有一个初学者的问题，当我尝试使用服务提供者和模型事件来记录更新信息时。
Was following the online doc: https://laravel.com/docs/5.3/eloquent#events
正在关注在线文档：https: //laravel.com/docs/5.3/eloquent#events
After put all code together, I find that the model event only fire when create the use but never log anything when I edit the user.
将所有代码放在一起后，我发现模型事件仅在创建使用时触发，但在编辑用户时从不记录任何内容。
Did I miss anything? Feel like the $user didn't get assigned properly. Where is it from? from other service provider?
我错过了什么吗？感觉 $user 没有正确分配。这个从哪里来？来自其他服务提供商？
Any explanation or hint will be appreciated!
任何解释或提示将不胜感激！
<?php
namespace App\Providers;
use App\User;
use Illuminate\Support\ServiceProvider;
class AppServiceProvider extends ServiceProvider
{
/**
* Bootstrap any application services.
*
* @return void
*/
public function boot()
{
User::creating(function ($user) {
Log::info('event creating');
});
User::created(function ($user) {
Log::info('event created');
});
User::updating(function ($user) {
Log::info('event updating');
});
User::updated(function ($user) {
Log::info('event updated');
});
User::saving(function ($user) {
Log::info('event saving');
});
User::saved(function ($user) {
Log::info('event saved');
});
User::deleting(function ($user) {
Log::info('event deleting');
});
User::deleted(function ($user) {
Log::info('event deleted');
});
}
/**
* Register the service provider.
*
* @return void
*/
public function register()
{
//
}
}
回答by Eric Tucker
You need to retrieve the user from the database and then save that user in order to fire the event. For example:
您需要从数据库中检索用户，然后保存该用户以触发事件。例如：
This will NOT fire the update event:
这不会触发更新事件：
User::where('id', $id)->update(['username' => $newUsername]);
This will fire the update event:
这将触发更新事件：
User::find($id)->update(['username' => $newUsername]);
回答by Lionel Chan
Possible reasons:
可能的原因：
The row is not updated at all - no changes. Hence not firing, and
You used
update. Check the docs here: https://laravel.com/docs/5.3/eloquent#updates
该行根本没有更新 - 没有变化。因此不开火，并且
你用过
update。在此处查看文档：https: //laravel.com/docs/5.3/eloquent#updates
When issuing a mass update via Eloquent, the saved and updated model events will not be fired for the updated models. This is because the models are never actually retrieved when issuing a mass update.
当通过 Eloquent 发布批量更新时，不会为更新的模型触发保存和更新的模型事件。这是因为在发布批量更新时实际上从未检索到模型。
