App\Http\Controllers\SeoController::validate PHP Method

    public function validate(Request $request, array $rules, array $messages = [], array $customAttributes = [])
    {
        /** @var \Illuminate\Validation\Validator $validator */
        $validator = Validator::make($request->all(), $rules, $messages, $customAttributes);
        if ($validator->fails()) {
            $request->flash();
            throw new HttpException(Response::HTTP_NOT_ACCEPTABLE, $validator->errors()->first());
        }
    }