상위 모델의 timestamp(updated_at) 갱신하기

• https://laravel.com/docs/11.x/eloquent-relationships#touching-parent-timestamps

• https://panjeh.medium.com/touch-laravel-model-touch-relationships-in-depth-explanations-822b66d87fa8

  • https://github.com/laravel/framework/blob/73f5e1b0364d24fd4ac326cba0f2f2b690724634/src/Illuminate/Database/Eloquent/Concerns/HasTimestamps.php#L29 touch()

  $article = Article::find($id);
  $article->touch();
  

  • https://github.com/laravel/framework/blob/73f5e1b0364d24fd4ac326cba0f2f2b690724634/src/Illuminate/Database/Eloquent/Concerns/HasRelationships.php#L733 touchOwners()

  use Illuminate\\Database\\Eloquent\\Model;
  
  class Comment extends Model
  {
      protected $touches = ['post'];
  		
      public function post()
      {
          return $this->belongsTo('App\\Post');
      }
  }
  

사용할 때 주의

• N:M relationship
  • https://github.com/laravel/framework/issues/31597
• limit (too many update)

  • https://blog.creekorful.org/2021/11/laravel-beware-of-touches/

  • Define the UserSaved event

    class User extends Model
    {
        protected $dispatchesEvents = [
            'saved' => UserSaved::class,
        ];
    
        public function roles(): BelongsToMany
        {
            return $this->belongsToMany(Role::class);
        }
    }
    

  • Define the UserListener

    class UserListener
    {
        public function handleUserSaved(UserSaved $event)
        {
            // Take roles ids by batch of 1000 and run a single SQL query
            // to bump updated_at.
            $event->user->roles()->chunk(1000, function (Collection $role) {
                Role::whereIn('id', $role->pluck('id'))->update(['updated_at' => Carbon::now()]);
            });
        }
    }