您是否可以在不创建新属性的情况下筛选已检索关系的数据?

我有 one to many 之间的关系 users 和 posts .

我想知道我是否渴望在日志中加载,我是否可以修改集合而不在上创建新的属性 User 模型。

$user = User::with('posts')->get();

// Filter the posts on the user using business logic.
// Below is an example. I DO NOT want to do this logic in the db/query builder.

// Arbitrary business rule that is not easily possible to calculate in DB
$shouldGetTestPost = true;

$user->posts = $user->posts->filter(function($post) use ($shouldGetTestPost) {
    if ($shouldGetTestPost && $post->name = 'test') {
        return true;
    }

    return false;
});

dd($user);

如果我运行上述代码,laravel将创建一个名为 帖子 并将集合分配给该属性,而不是修改关系。

例如

// I've removed irrelevant model data
App\User {#1145
  #table: "users"
  #attributes: array:6 [
    "id" => 1
    "email" => "test@test.com"
    "password" => "secret"
    "updated_at" => "2019-02-11 18:56:35"
    "created_at" => "2019-02-11 18:56:35"
    // Below is new
    "posts" => Illuminate\Database\Eloquent\Collection {#1217
      #items: array:1 [
        0 => App\Post {#1269
          #table: "posts"
          #attributes: array:24 [
            "id" => 1
            "name" => 'test'
            "user_id" => 1
          ]
        }
      ]
    }
  ]
  #original: array:5 [...]
  #relations: array:1 [
    "posts" => Illuminate\Database\Eloquent\Collection {#1264
      #items: array:2 [
        0 => App\Post {#1269}
        1 => App\Post {#1234
          #table: "posts"
          #attributes: array:24 [
            "id" => 1
            "name" => 'test'
            "user_id" => 1
          ]
        }
      ]
    }
  ]
]

另一件有趣的事情是 #relations 数据将从 items 数组,但引用仍保留。见 0 => App\Post {#1269}

这是为拉拉维尔准备的吗?我知道Laravel将属性优先于关系,但它不会改变关系数组,这似乎很奇怪。

如何只更改关系集合而不创建新属性?