OEModule\PatientTicketing\widgets\TicketAssignAppointment::validate PHP Method

    public function validate($form_data)
    {
        $errs = array();
        if (!@$form_data['appointment_date']) {
            $errs['appointment_date'] = 'Please enter an appointment date';
        }
        $appointment_date = \Helper::convertNHS2MySQL($form_data['appointment_date']);
        $date_validator = new \OEDateValidator();
        if (!$date_validator->validateValue($appointment_date)) {
            if (strtotime($appointment_date) != false) {
                $errs['appointment_date'] = 'Appointment date is not in valid format';
            } else {
                $errs['appointment_date'] = 'Appointment date is not a valid date';
            }
        } else {
            $not_historical_validator = new \OEDateValidatorNotHistorical();
            if ($not_historical_validator->validateValue($appointment_date) == false) {
                $errs['appointment_date'] = 'Appointment date cannot be in the past';
            }
        }
        if ($appointment_time = @$form_data['appointment_time']) {
            $time_validator = new \OETimeValidator();
            if (!$time_validator->validateValue($appointment_time)) {
                $errs['appointment_time'] = 'Appointment time is not valid';
            }
        }
        return $errs;
    }