Yii2 - Adding html class to form file input

Question

I'm trying to add a class to form file input in yii2, but it doesn't seem to work.

I'm trying to add .cropit-image-input to this form element.

<?= $form->field($model, 'profile_picture_url')->fileInput() ?>

Answer 1

You can add class property of element like following:

<?= $form
      ->field($model, 'profile_picture_url')
      ->fileInput(['class'=>'cropit-image-input']) 
?>

Answer 2

You can add class to fileInput() like any normal input.

For Example,

<?= $form->field($model, 'profile_picture_url')->fileInput(['class' => 'cropit-image-input form-control']) ?>

FileInput()