yii: how to make a unique rule for two attributes

Question

I have a table like this: (id, name, version, text). (name, version) is unique key, how can i make a rule to validate this.

Answer 1

In Yii2:

public function rules() {
    return [
        [['name'], 'unique', 'targetAttribute' => ['name', 'version']],
    ];
}