Question

AdvertiseController.php

class AdvertiseController extends Controller
{
    ...
    public function NewAdvertiser()
    {
        $advertiser = new Advertiser((string)Uuid::generate(4));
        $advertiser->createAdvertiser();
        return Redirect::route('dashboard');
    }
    ...
}

Advertiser.php

class Advertiser extends Model
{
    ...
    protected $fillable = ['token'];

    private $token;

    function __construct($token)
    {
        $this->token = $token;
    }

    function createAdvertiser()
    {
        //dd($this);
        $this->save();
        //dd($this);
    }
    ...
}

第一个dd($this)打印以下内容：

Advertiser {#181 ▼
  #fillable: array:1 [▼
    0 => "token"
  ]
  -token: "44f1e74b-ad19-4e73-ac2e-b37ffde59e99"
  #connection: null
  #table: null
  #primaryKey: "id"
  #perPage: 15
  +incrementing: true
  +timestamps: true
  #attributes: []
  #original: []
  #relations: []
  #hidden: []
  #visible: []
  #appends: []
  #guarded: array:1 [▼
    0 => "*"
  ]
  #dates: []
  #dateFormat: null
  #casts: []
  #touches: []
  #observables: []
  #with: []
  #morphClass: null
  +exists: false
  +wasRecentlyCreated: false
}

第二个dd($this)：

Advertiser {#181 ▼
  #fillable: array:1 [▼
    0 => "token"
  ]
  -token: "295764d5-c45c-4aa9-8ce2-8ed772687fb8"
  #connection: null
  #table: null
  #primaryKey: "id"
  #perPage: 15
  +incrementing: true
  +timestamps: true
  #attributes: array:3 [▼
    "updated_at" => "2016-05-19 11:39:42"
    "created_at" => "2016-05-19 11:39:42"
    "id" => 7
  ]
  #original: array:3 [▼
    "updated_at" => "2016-05-19 11:39:42"
    "created_at" => "2016-05-19 11:39:42"
    "id" => 7
  ]
  #relations: []
  #hidden: []
  #visible: []
  #appends: []
  #guarded: array:1 [▼
    0 => "*"
  ]
  #dates: []
  #dateFormat: null
  #casts: []
  #touches: []
  #observables: []
  #with: []
  #morphClass: null
  +exists: true
  +wasRecentlyCreated: true
}

token有一个减号，它与它有什么关系吗？我找不到任何有关它的信息。

该字段的数据库迁移：

$table->uuid('token');

问题是所有记录都已成功存储，但token字段为空。

Answer 1

您的模型存在一些问题。您只需要填充可填充属性。删除构造函数，因为它删除了正确填充模型的雄辩能力，这会导致问题。也不需要包装save方法。同时使令牌成为类的属性不是使其成为模型属性的方法。要回答关于-符号的问题，那是因为它被声明为私有财产。

这是模型外观的一个示例。

class Advertiser extends Model
{
    protected $fillable = ['token'];
}

如果你真的必须覆盖构造函数，你应该确保它用一组属性构造父类。

class Advertiser extends Model
{
    public function __construct(array $attributes = [])
    {
        parent::__construct($attributes);
        // Your code here
    }
}

在这种情况下，你的控制器需要看起来如下所示。

class AdvertiseController extends Controller
{
    public function NewAdvertiser()
    {
        // Create the model with an attributes array
        $advertiser = new Advertiser([
            'token' => (string)Uuid::generate(4)
        ]);

        // Save the model
        $advertiser->save();

        return Redirect::route('dashboard');
    }
}

Laravel的save（）不保存所有字段

1 个答案: