如何在集合laravel中添加新值？

Question

我有以下循环,我尝试添加一个新值:

 foreach ($pro->sig()->get() as $key => $sig) {
            $sig->val = 2;
        }

当我打印输出$pro->sig()我没有新值$sig->val

Answer 1

如果您有一个集合,您可以使用push或put方法.

放置示例:

$collection = collect(['product_id' => 1, 'name' => 'Desk']);

$collection->put('test', 'test');

$collection->all();

输出将是:

['product_id' => 1, 'name' => 'Desk', 'test' => 'test']

推送示例:

$collection = collect([1, 2, 3, 4]);

$collection->push(5);

$collection->all();

输出:

[1, 2, 3, 4, 5]

参考:https://laravel.com/docs/5.3/collections#method-push

Answer 2

在我的示例中，我尝试如下所示

foreach ($user->emails as $key => $email) {
   $email->test = "test";
}
return $user->emails;

它输出像

  {
    "id": 76,
    "user_id": 5,
    "additional_email": "test@test.com",
    "test": "test"
  }

请尝试这样。