PHP Medical::error_message示例

 function save()
 {
     $medical = new Medical();
     $medical->staff_id = $this->staff_id;
     $medical->medic_date = $this->input->post('medic_date');
     $medical->medic_description = $this->input->post('medic_description');
     if ($medical->save()) {
         $this->session->set_flashdata('message', 'Medical successfully created!');
         redirect('staffs/' . $this->staff_id . '/medical_histories/index');
     } else {
         // Failed
         $medical->error_message('custom', 'Field required');
         $msg = $medical->error->custom;
         $this->session->set_flashdata('message', $msg);
         redirect('staffs/' . $this->staff_id . '/medical_histories/add');
     }
 }