Yii2 listBox多选项

Question

我尝试在列表框中预选，但它不起作用。

当我尝试使用其他选项时，如标签或其他功能，但选择不起作用。

这是我的代码：

    $form->field($model, 'offerCategory')->listBox([
            'monday' => 'Monday',
            'tuesday' => 'Tuesday',
            'wednesday' => 'Wednesday',
            'thursday' => 'Thursday',
            'friday' => 'Friday',
            'saturday' => 'Saturday',
            'sunday' => 'Sunday'], 
            ['options' => ['monday' => ['selected' => 'selected'],
                           'tuesday' => ['selected' => 'selected'],
                           'wednesday' => ['label' => 'test']
                          ],
            'multiple' => 'true',
    ])

Answer 1

首先设置模型属性：

<?php $model->offerCategory = ['monday', 'tuesday'] ?>
<?=$form->field($model, 'offerCategory')->listBox([
        'monday' => 'Monday',
        'tuesday' => 'Tuesday',
        'wednesday' => 'Wednesday',
        'thursday' => 'Thursday',
        'friday' => 'Friday',
        'saturday' => 'Saturday',
        'sunday' => 'Sunday'
        ],['multiple' => 'true',
    ]) ?>