protected function parseFailedRules($failedRules)
    {
        // Parsed failed rules container
        $parsedFailedRules = [];

        foreach ($failedRules as $field => $ruleAttributes) {
            foreach ($ruleAttributes as $rule => $attributes) {
                $parsedFailedRules[$field] = strtolower($field.'.'.$rule);
            }
        }

        return $parsedFailedRules;
    }