背包换laravel N-N的关系，然后选择-多个字段

Question

我有三个表，住宿，客房和住宿房间。

在房间我有ID和ROOM_NAME领域，具有时间戳创建/修改的字段和其他领域设置在一起。

第三个表是外部参照表，与两个accomodation_id和ROOM_ID领域。

在我的住宿模型明确https://laravel.com/docs/5.7/eloquent-relationships#many-to-many设置我的房间方法：按如下说明：

    public function rooms()
    {
        return $this->belongsToMany('App\Models\Room', 'accomodation_rooms', 'accomodation_id', 'room_id');
    }

然后，我尝试建立一个字段是这样的：

    $room = [
        [       // Select2Multiple = n-n relationship (with pivot table)
        'label' => "Rooms",
        'type' => 'select2_multiple',
        'name' => 'rooms', // the method that defines the relationship in your Model
        'entity' => 'rooms', // the method that defines the relationship in your Model
        'attribute' => 'room_name', // foreign key attribute that is shown to user
        'model' => "App\Models\Rooms", // foreign key model
        'pivot' => true, // on create&update, do you need to add/delete pivot table entries?
        ]
    ];

    $this->crud->addField($room);

但我得到的供应商/背包/污物/ src目录/ PanelTraits / Fields.php 37行出现以下错误：

未定义指数：名称

在那里我有这样的代码：

    // if the label is missing, we should set it
    if (! isset($completeFieldsArray['label'])) {
        $completeFieldsArray['label'] = mb_ucfirst(str_replace('_', ' ', $completeFieldsArray['name']));
    }

请帮忙。

Laravel 5,7，backpackforlaravel 3.5。

Answer 1

我终于得到了我的打字错误错误。字段定义阵列应该是较简单的一个，方括号的一个级别。

$room = [ // Select2Multiple = n-n relationship (with pivot table)
    'label' => "Rooms",
    'type' => 'select2_multiple',
    'name' => 'rooms', // the method that defines the relationship in your Model
    'entity' => 'rooms', // the method that defines the relationship in your Model
    'attribute' => 'room_name', // foreign key attribute that is shown to user
    'model' => "App\Models\Rooms", // foreign key model
    'pivot' => true, // on create&update, do you need to add/delete pivot table entries?
];