$firstErrors public read-only property The first errors

activeAttributes() public method Returns the attribute

$data public property The data that is passed to

bindActionParams() public method Binds the parameters

clearOutput() public method Removes all output echoed

$layout public property The layout that should be applied for

attributes() public method Returns the list of attribute

defineAttribute() public method Defines an attribute.

$requestedAction public property The requested Action. If null

EVENT_BEFORE_REQUEST event of type yii\base\Event