skeeks\cms\models\CmsSiteDomain::rules PHP Method

    public function rules()
    {
        return array_merge(parent::rules(), [[['created_by', 'updated_by', 'created_at', 'updated_at'], 'integer'], [['site_code', 'domain'], 'required'], [['site_code'], 'string', 'max' => 15], [['domain'], 'string', 'max' => 255], [['domain', 'site_code'], 'unique', 'targetAttribute' => ['domain', 'site_code'], 'message' => \Yii::t('skeeks/cms', 'The combination of Site Code and Domain has already been taken.')]]);
    }