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

One approach is to use a custom validation rule. For example, the rule:

array('colour', 'requiredOnHasColour'),

And then the validator method in the same model class:

public function requiredOnHasColour($attribute, $params) {
    if ($this->hasColour && $this->$attribute == null)
        $this->addError($attribute, 'Colour is required.');
}

More info: Create your own validation rule