Yii - dynamically change rules from controller

Question

Let\'s say I have a product which can have a colour. Depending on the product type, the colour field may or may not be required.

If colour is always required, I would ha

Answer 1

class LoginForm extends CFormModel
{
    public $username;
    public $password;
}

$form = new LoginForm();
$form->validatorList->add(
    CValidator::createValidator('required', $form, 'username, password')
);

Now $form has two required fields.