Laravel Eloquent在表中沒有實際變化時監聽事件

Question

我需要偵聽模型中的更新事件，但我需要對模型中不存在的一些變量進行建模。我是通過向模型添加公共變量來實現的，但是當我只對這些'假'屬性進行更改時，我無法聽到。無論如何要通過'假'屬性來建模並可以偵聽更新嗎？

這是我的示例類。

<?php 

class School extends Eloquent { 
    protected $table = 'schools'; 

    protected $fillable = array('name', 'type_id', 'city'); 
    protected $guarded = array('id'); 

    public $set_specialties; 

    protected static function boot() 
    { 
     parent::boot(); 

     static::updating(function($model) 
     { 
      $data = array(
       'name' => $model->name, 
       'type_id' => $model->type_id, 
       'specialties' => $model->set_specialties, 
       'city_id' => $model->city_id 
      ); 

      $rules = array(
       'name' => 'required|min:3|max:50', 
       'type_id' => 'required|min:1|max:300000', 
       'specialties' => 'required|array', 
       'city_id' => 'required|min:1|max:300000' 
      ); 

      $validator = Validator::make($data, $rules); 

      if ($validator->fails()) { 
       throw new ValidationException(null, null, null, $validator->messages()); 
      } else {  
       return true; 
      } 
     }); 

     static::updated(function($model) 
     { 
      if ($model->set_specialties != null) 
      { 
       $model->specialty()->sync($model->set_specialties); 
      } 
     }); 
    } 
} 

這裏是我的更新方法從控制器：

public function update($id) 
{ 
    $data = Input::only('name', 'type_id', 'description', 'info_specialties', 'contacts', 'specialties', 'financing_id', 'district_id', 'city_id'); 

    $school = School::find($id); 
    $school->name = $data['name']; 
    $school->type_id = $data['type_id']; 
    $school->set_specialties = $data['specialties']; 
    $school->city_id = $data['city_id']; 

    try { 
     $school->save(); 
    } catch (ValidationException $errors) { 
     return Redirect::route('admin.schools.edit', array($id)) 
      ->withErrors($errors->getErrors()) 
      ->withInput(); 
    } 

    return Redirect::route('admin.schools.edit', array($id)) 
     ->withErrors(array('mainSuccess' => 'It's updated successful!')); 
} 

Answer 1

您可以創建自定義事件，here官方的文檔！