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

In your ActiveRecord you can add in any place dynamic validator. For example i overwrite parent method setAttributes and add $this->validatorList->add() depends on selected value in $this->type attribute. Official docs: https://www.yiiframework.com/doc/api/1.1/CValidator

public function setAttributes($values, $safeOnly = true)
{
    $result = parent::setAttributes($values, $safeOnly);

    if (self::TYPE_PHONE == $this->type) {
        $this->validatorList->add(CValidator::createValidator('required', $this, ['phone', 'phonePrefix']));
    } elseif (self::TYPE_EMAIL == $this->type) {
        $this->validatorList->add(CValidator::createValidator('required', $this, ['email']));
    }

    return $result;
}