additional hidden field with radio button set default value in yii2
you will see yii automatically adds hidden field with each radio button and checkbox , you can set its default value by following code
| 1 | <?= $form->field($model, 'session_frequency_id')->radio(['uncheck' => 1, 'label' => 'Daily', 'value' => 1, 'class' => 'icheck toggle-able sessionhost-session_frequency_id' ] ) ?> |
in above code uncheck => 1 will set hidden field value .