Laravel: how to create a function After or Before save|update
LaravelSaveUpdatesLaravel Problem Overview
I need to generate a function to call after or before save() or update() but i don't know how to do. I think I need a callback from save() update() but I don't know how to do. Thanks
Laravel Solutions
Solution 1 - Laravel
Inside your model, you can add a boot() method which will allow you to manage these events.
For example, having User.php model:
class User extends Model
{
public static function boot()
{
parent::boot();
self::creating(function($model){
// ... code here
});
self::created(function($model){
// ... code here
});
self::updating(function($model){
// ... code here
});
self::updated(function($model){
// ... code here
});
self::deleting(function($model){
// ... code here
});
self::deleted(function($model){
// ... code here
});
}
}
You can review all available events over here: https://laravel.com/docs/5.2/eloquent#events
Solution 2 - Laravel
This only works after an event happened on your model.
Method 1, using Observers
Create an observer for your model
php artisan make:observer UserObserver --model=User
this will create an event observer on your model
class UserObserver
{
/**
* Handle the User "created" event.
*
* @param \App\Models\User $user
* @return void
*/
public function created(User $user)
{
//
}
/**
* Handle the User "updated" event.
*
* @param \App\Models\User $user
* @return void
*/
public function updated(User $user)
{
//
}
/**
* Handle the User "deleted" event.
*
* @param \App\Models\User $user
* @return void
*/
public function deleted(User $user)
{
//
}
/**
* Handle the User "forceDeleted" event.
*
* @param \App\Models\User $user
* @return void
*/
public function forceDeleted(User $user)
{
//
}
}
You must register this observer in the boot method on one of your ServiceProviders preferably the AppServiceProvider
// App\Providers\AppServiceProvider.php
public function boot()
{
User::observe(UserObserver::class);
}
Method 2, using Closures
You can register custom events in the static booted method of your model
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class User extends Model
{
/**
* The "booted" method of the model.
*
* @return void
*/
protected static function boot()
{
parent::boot();
static::created(function ($user) {
//
});
}
}
Available observable events
// Illuminate\Database\Eloquent\Concerns
/**
* Get the observable event names.
*
* @return array
*/
public function getObservableEvents()
{
return array_merge(
[
'retrieved', 'creating', 'created', 'updating', 'updated',
'saving', 'saved', 'restoring', 'restored', 'replicating',
'deleting', 'deleted', 'forceDeleted', 'trashed'
],
$this->observables
);
}
Note from Laravel documentation
> When issuing a mass update via Eloquent, the saving, saved, updating, and updated model events will not be fired for the updated models. This is because the models are never actually retrieved when issuing a mass update.
Solution 3 - Laravel
Create a provider by using this command
php artisan make:provider ProviderClassName
then define the callbacks for models in boot function
Model::created(function($model){
//Do you want to do
});
List of available callbacks:
Model::creating(function($model){});
Model::updated(function($model){});
Model::updating(function($model){});
Model::deleted(function($model){});
Model::deleting(function($model){});
Model::saving(function($model){});
Model::saved(function($model){});