fuel/fuel/core/classes/form/instance.php
public function set_attribute($key, $value)
	{
		$attributes = $this->get_config('form_attributes', array());
		$attributes[$key] = $value;
		$this->set_config('form_attributes', $attributes);

		return $this;
	}
public function set_attribute($key, $value)
	{
		$attributes = $this->get_config('form_attributes', array());
		$attributes[$key] = $value;
		$this->set_config('form_attributes', $attributes);

		return $this;
	}
public function set_attribute ( $ key , $ value ) { $ attributes = $ this -> get_config ( 'form_attributes' , array ( ) ) ; $ attributes [ $ key ] = $ value ; $ this -> set_config ( 'form_attributes' , $ attributes ) ; return $ this ; }
Set form attribute

@param  string
@param  mixed
Set form attribute