Yii2 DropDownList syntax
echo $form->field($model, 'name_field')->dropDownList( [items], [options] );
DropDownList with model data
Using below code snippet you can display the database table column’s data in the dropdownList via modal.
//use app\models\Country;
$countries=Country::find()->all();
//use yii\helpers\ArrayHelper;
$listData=ArrayHelper::map($countries,'code','name');
echo $form->field($model, 'name')->dropDownList(
$listData,
['prompt'=>'Select...']
);
