yii2 bootstrap从模型下拉列表

Question

Been at this for some time. I am trying to set-up a drowndown box. I can't get to fully understand how I should fill it... Here's the link of the documentation: Dropdown .

//$chapters[chapter['id','title','parent_id']]
echo Dropdown::widget([
'items'=>$chapters,
'options'=>'',
]);

When I try this I need a label, but when I add a label, Yii says it doesn't recognize label.

I just can't get it to work and since yii2 is pretty new it is hard to find examples online.

Answer 1

echo Dropdown will never show you a label. Either use an activeField or manually show it using echo Html::label() , You can read more about the params for the label here: http://www.yiiframework.com/doc-2.0/yii-helpers-basehtml.html#label()-detail

You usually can use an activeField, or at least active models

Answer 2

I found the following solution:

echo Html::activeDropDownList($model, 'id',
  ArrayHelper::map(Chapter::find()->all(), 'id', 'title'));

I am not using the DropDown::Widget, but this does (exactly?) the same thing. Next step it to give the ArrayHelper from the Controller, instead of getting from the database directly from the view. But for now this works.