Manually add item to existing object [Laravel 5]

问题

Here is what I try to do:

$q = Question::where('id',$id -> id)->get();
$q[] = $q->push([ 'test' => true]); 
dd($q);

This will output:

Collection {#220 ▼
  #items: array:3 [▼
    0 => Question {#225 ▶}
    1 => array:1 [▼
      "test" => true
    ]
    2 => null
  ]
}

So 'test' => true will append as a new key, but I want to insert it in Question so latter I can access to it like this with foreach $q -> test

So here is how I want access to item:

@foreach($q as $qq)
{{ $qq->test }}
@endforeach

回答1:

It can be done by using setAttribute() function of Eloquent Model (https://github.com/illuminate/database/blob/master/Eloquent/Model.php).
As You can see it stores data in protected $attributes using setAttribute(), and when we do $SomeModel->some_field it uses magic method __get() to retrieve item by association from attributes array.

Here is the resolution to Your question:

$Question = Question::find($id);
$Question->setAttribute('test', 'blablabla');

回答2:

Apart from setAttribute(), you can use put() refer to this post for one item. And map() for many items, refer to this post.

来源：https://stackoverflow.com/questions/31474452/manually-add-item-to-existing-object-laravel-5