/**
* Renders a file input.
* This method will generate the "name" and "value" tag attributes automatically for the model attribute
* unless they are explicitly specified in `$options`.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[Html::encode()]].
*
* If you set a custom `id` for the input element, you may need to adjust the [[$selectors]] accordingly.
*
* @return $this the field object itself
*/
public function fileInput($options = [])
{
// https://github.com/yiisoft/yii2/pull/795
if ($this->inputOptions !== ['class' => 'form-control']) {
$options = array_merge($this->inputOptions, $options);
}
$this->adjustLabelFor($options);
$this->parts['{input}'] = Html::activeFileInput($this->model, $this->attribute, $options);
return $this;
}