forms - yii2 validate empty dropdownlist, checkbox -

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i have fields required in model , dropdownlist on form.

if try submit form without selecting no validation error occurs on view way textinput would.

model

[['name', 'survey_type','country_id'], 'required',                  'isempty' => function ($value) {                     return empty($value);                 }             ],

display empty red validation

<?= $form->field($model, 'name')->textinput(['maxlength' => 255]) ?>

does not display validation

<?= $form->field($model, 'survey_type')->dropdownlist([$surveytypelist],['prompt'=>'select survey type','id'=>'survey_type_dropdown']) ?>

this because overrided id drop-down list:

'id' => 'survey_type_dropdown'

you shouldn't if want client validation working field.

ids generated automatically , used in javascript related activeform.

remove , should fine:

<?= $form->field($model, 'survey_type')->dropdownlist([$surveytypelist],['prompt' => 'select survey type']) ?>

if want element in javascript, use auto generated id or assign custom class.


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