หมวดหมู่: CodeIgniter

ตัวอย่างการเขียน custom rule validation

<?php
class FormValidationCustomRules extends CI_Controller
{

 public function __construct () {
 parent::__construct () ;
 // Your own constructor code
 }

 public function uploadJPEG () {
 $this->form_validation->set_rules ('cover', 'JPEG Upload', 'trim|xss_clean') ;

 if ($this->form_validation->run () == true) {
 $fileDir = 'assets/contents/';
 $fileName = date ('U') . '.jpeg';

 $config = [
 'allowed_types' => 'jfi|jfif|jif|jpe|jpeg|jpg',
 'file_ext_tolower' => true,
 'file_name' => $fileName,
 'max_size' => '10000',
 'overwrite' => false,
 'upload_path' => $fileDir,
 ];

 $this->load->library ('upload', $config) ;

 if ($this->upload->do_upload ('cover', false)) {
 $this->uploadFile = $fileDir . $fileName;
 return true;
 } else {
 $this->form_validation->set_message ('uploadJPEG', $data['error'] = $this->upload->display_errors ()) ;

 if ($_FILES['cover']['error'] != 4) {
 return false;
 }
 }
 }

 return false;
 }

 public function index () {
 $this->load->library ('form_validation') ;

 $formValidation = [
 [
 'field' => 'cover',
 'label' => 'JPEG Upload',
 'rules' => 'callback_uploadJPEG',
 ],
 ];
 $this->form_validation->set_rules ($formValidation) ;

 if ($this->form_validation->run () == true) {
 echo 'upload file to ', $this->uploadFile, '<br><img alt="', $this->uploadFile, '" class="img-thumbnail" src="../', $this->uploadFile, '">';
 }

 $this->load->view ('FormValidation/CustomRules') ;
 }
}

หลักการคือ

• สร้าง function ขึ้นมา แล้วเรียกใช้โดยมี callback_ นำหน้า
• ส่ง message กลับมาโดยใช้ $this->form_validation->set_message (‘function name’,’ข้อความ’)