Laravel雄辩：更新一个模型及其关系 [英] Laravel eloquent: Update A Model And its Relationships

问题描述

使用雄辩的模型，您可以通过调用

  $ model-> update（$ data）来更新数据; 
  

但不幸的是，这不会更新关系。

如果要更新关系，您将需要手动分配每个值，并调用 push（）然后：

  $ model-> name = $ data [ '名称']; 
 $ model-> relationship-> description = $ data ['relationship'] ['description']; 
 $ model-> push（）; 
  

通过这个工作，如果你有很多数据要分配，这将会变得混乱。 >

我对某些类似

  $ model-> push（$数据）; //这应该将数据分配给类似update（）的模型，但也可以为$ model 
  

<有人可以帮我吗？你可以实现来捕捉升级雄辩的事件。

首先，创建一个观察者类：

public $ update $（$ model）{
$ data = $ model-> getAttributes（）;

  class RelationshipUpdateObserver {
 
 
 
 $ model-> relationship-> fill（$ data ['relationship']）; 
 
 $ model-> push（）; 
} 
 
} 
  

然后将其分配给您的模型

  class Client扩展Eloquent {
 
 public static function boot（）{
 
 parent :: boot（）; 
 
 parent :: observe（new RelationshipUpdateObserver（））; 
} 
} 
  

当你调用update方法时，更新事件将被触发，所以观察者将被触发。

  $ client-> update（array（
relationship=> array（foo=>bar），
username=>baz
））; 
  

请参阅 laravel文档的完整的事件列表。

With an eloquent model you can update data simply by calling

$model->update( $data );

But unfortunately this does not update the relationships.

If you want to update the relationships too you will need to assign each value manually and call push() then:

$model->name = $data['name'];
$model->relationship->description = $data['relationship']['description'];
$model->push();

Althrough this works it will become a mess if you have a lot of data to assign.

I am looging for something like

$model->push( $data ); // this should assign the data to the model like update() does but also for the relations of $model

Can somebody please help me out?

解决方案

You can implement the observer pattern to catch the "updating" eloquent's event.

First, create an observer class:

class RelationshipUpdateObserver {

    public function updating($model) {
        $data = $model->getAttributes();

        $model->relationship->fill($data['relationship']);

        $model->push();
    }

}

Then assign it to your model

class Client extends Eloquent {

    public static function boot() {

        parent::boot();

        parent::observe(new RelationshipUpdateObserver());
    }
}

And when you will call the update method, the "updating" event will be fired, so the observer will be triggered.

$client->update(array(
  "relationship" => array("foo" => "bar"),
  "username" => "baz"
));

See the laravel documentation for the full list of events.

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