在CodeIgniter中插入重复数据 [英] duplicate data insert in CodeIgniter

问题描述

我只是在codebin控制器部分中在pastebin中插入数据 http://pastebin.com/KBtqrAkZ

  public function add_product（）
 {
 $ this-> lang-> load（'log_in' ， '英语'）; 
 log_in_check（$ this-> lang-> line（'log_in_authentication_error'），'admin / log_in'）; 
 $ this-> lang-> load（'common'，'english'）; 
 $ data ['title'] = $ this-> lang->行（'admin_index_title'）; 
 $ this-> load-> view（'admin_template / header'，$ data）; 
 $ this-> load-> view（'admin_template / left_menu'）; 
 $ data ['error_msg'] =''; 
 if（$ this-> form_validation-> run（'add_product'）=== TRUE）
 {
 $ this-> admin_model-> add_product（$ this-> ; input-> post（））; 
 $ this-> session-> set_flashdata（'status_msg'，$ this-> lang-> line（'add_product_success'））; 
 redirect（uri_string（），'refresh'）; 
 exit; 
 $ data ['error_msg'] = $ this-> lang-> line（'add_product_invalid_data'）; 
} 
 $ this-> load-> view（'admin / add_product'）; 
 // $ this-> load-> view（'admin_template / notification'）; 
 $ this-> load-> view（'admin_template / footer'）; 
} 
  

比我的模型部分简单在pastebin添加 http://pastebin.com/WiLHV2sr

  public function add_product（$ data = array（））
 {
 $ this-> db-> insert（'ishop_product'，$ data）; 
 return $ this-> db-> insert_id（）; 
} 
  

我的问题是重定向后，如果我按ctrl + F5或F5比数据正在插入。我是一个新的codeigniter。请帮帮我。

解决方案

这是双提交问题。

有几种处理方式：

1. 帖子/重定向/获取模式 ：中断后退按钮，它不会保留您的用户从回去足够再提交。




2. 禁用提交按钮：在某些时候处理多次点击，




3. 在会话中存储令牌 ：如果在浏览器中打开了多个选项卡，会话中存储的令牌可能会混淆。 （注意：您可以使用创建特定于浏览器标签的Cookie ）




4. 更改数据库不允许重复：最好的解决方案，最努力。




5. 唯一交易ID ： PHP黑客页面和此答案。




6. 在会话中：选项3上的变体。如果将所有生成的令牌存储在会话中，则不需要涉及数据库。重复的概率要低得多，因为令牌在会话中是唯一的。可能的问题包括令牌生长失控。也许可以修复有限大小的堆栈，你添加到堆栈的顶部，额外的令牌从底部掉下来。未测试。

-

strong>唯一事务ID 方法。它的工作原理如下：

1. 生成随机 transaction_id 在您的网络表单。




2. 当您收到添加产品的请求时， 检查用于事务表中的 transaction_id 。




3. 如果表中的不存在，请执行事务，并将transaction_id插入表中。




4. 如果表格中存在 ，表示交易已完成。

您还应搜索 [双提交-prevention] ，看看是否可以找到更好的解决方案。

I am just inserting data in codeigniter controller part at pastebin http://pastebin.com/KBtqrAkZ

  public function add_product()
  {
    $this->lang->load('log_in', 'english');
        log_in_check($this->lang->line('log_in_authentication_error'), 'admin/log_in');
        $this->lang->load('common', 'english');
        $data['title'] = $this->lang->line('admin_index_title');
        $this->load->view('admin_template/header', $data);
        $this->load->view('admin_template/left_menu');
    $data['error_msg'] = '';
        if ($this->form_validation->run('add_product') === TRUE)
        {
      $this->admin_model->add_product($this->input->post());
            $this->session->set_flashdata('status_msg', $this->lang->line('add_product_success'));
            redirect(uri_string(), 'refresh');
      exit ;
          $data['error_msg'] = $this->lang->line('add_product_invalid_data');
        }
        $this->load->view('admin/add_product');
        //$this->load->view('admin_template/notification');
        $this->load->view('admin_template/footer');  
  }

Than my model part is simple add at pastebin http://pastebin.com/WiLHV2sr

  public function add_product($data = array())
  {
    $this->db->insert('ishop_product', $data);
    return $this->db->insert_id();
  }

my problem is after redirecting if I press ctrl + F5 or F5 than the data is inserting. I am a new in codeigniter. Help me please. Any help will be greatly appreciated.

解决方案

This is the Double Submit Problem.

There are several ways of dealing with it:

1. The Post / Redirect / Get pattern: Breaks the back button, and it does not keep your user from going back far enough to submit again. Does not handle multiple clicks.

2. Disable the submit button: Handles multiple clicks some of the time, but does not fix the user going back and submitting again.

3. Store a token in the session: If you have multiple tabs open in the browser, the token stored in the session may get mixed up. (Note: It may be possible to create browser tab specific cookies using javascript, but I have not tried it myself.)

4. Change the database to not allow duplicates: The best solution, but also the most effort. If it detects a set of duplicate data, ignore the second request.

5. Unique transaction id: Described on this PHP hacks page, and on this answer.

6. Multiple tokens in the session: A variation on option 3. If you store all generated tokens in the session, you don't need to involve the database. The probability of a duplicate is much lower, given that tokens are unique inside a session. Possible problems include the set of tokens growing out of control. Maybe fixable with a limited size stack where you add to the top of the stack, and extra tokens fall off the bottom. Untested.

--

I like the unique transaction id method. It works like this:

1. Generate a random transaction_id and put it in your web form. It goes along when the user clicks submit.

2. When you receive the request to add a product, check for the transaction_id in the transaction table.

3. If the id does not exist in the table, do the transaction, and insert the transaction_id into the table.

4. If the id does exist in the table, the transaction is already done.

You should also search for [double-submit-prevention] in to see if you can find an even better solution.

这篇关于在CodeIgniter中插入重复数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！