'required', 'period' => 'required|in:month_price,quarter_price,half_year_price,year_price,two_year_price,three_year_price,onetime_price,reset_price' ]; } public function messages() { return [ 'plan_id.required' => __('Plan ID cannot be empty'), 'period.required' => __('Plan period cannot be empty'), 'period.in' => __('Wrong plan period') ]; } }