Conditional model rules in Yii

Question

I'd like to add some extra validation to a Yii model.

I know it is simple enough to add in some logic to say a form field must be an exact length of 6 characters, however is it possible to set the rule to say the following:

if ($_POST['code'] == '')
    then no validation needed
else
    code string must be exactly 6 characters in length

Answer 1

Go through this, you will get your answer, Yii validator

Answer 2

You can use:

 public function rules() {
        return array(
            array('code', 'length', 'is' => 6, 'allowEmpty' => true)
        );
    }

Answer 3

In your model add this rule , if code is an attribute

public function rules()
{
    return array(
       array('code', 'length', 'is'=>6, 'allowEmpty'=>true),          
    );
}

for more Info , Yii length validator