gridview - Yii2 GridView 值调用模型函数

Question

在我的用户模型中我有一个函数:

public function getRole() {
    if ($this->role == self::ROLE_USER) {
        return "user";
    } else if ($this->role == self::ROLE_ADMIN) {
        return "admin";
    }

    return "unassigned";
}

在 GridView 中我想调用它，但无法弄清楚在 Yii2 中如何，旧的 Yii 方法似乎不起作用:

[
    'attribute' => 'role',
    'filter' => false,
    'format' => 'raw',
    'value' => '$model->getRole()',
],

我不想使用匿名函数:

'value' => function($model) {
    switch($model->role) {
        case 10:
            return "user";
            break;
        case 90;
            return "admin";
            break;
        default;
            return "unassigned";
            break;
    }
},

Answer 1

你可以使用闭包(匿名函数)

[
  'attribute' => 'role',
  'filter' => false,
  'format' => 'raw',
   'value' => function ($model) {
       return  $model->getRole();
   },
],

value 属性的设置可以用字符串或匿名函数完成(没有其他)

$value - public property

An anonymous function or a string that is used to determine the value to display in the current column.

If this is an anonymous function, it will be called for each row and the return value will be used as the value to display for every data model.

http://www.yiiframework.com/doc-2.0/yii-grid-datacolumn.html# $值(value)细节

如果所需的值与 $model 实例相关，则匿名函数是唯一的可能