How to make a drop down list in yii2?

Question

How to make a dropdown in yii2 using an activeform and a model? Since all the methods has changed in yii2,how it is done

Answer 1

Maybe I'm wrong but I think that SQL query from view is a bad idea

This is my way

In controller

$model = new SomeModel();
$items=ArrayHelper::map(TableName::find()->all(),'id','name');


return $this->render('view',['model'=>$model, 'items'=>$items])

And in View

Or using ActiveForm

 field($model, 'item_id')->dropDownList($items) ?>