CodeIgniter set_value() 不工作？

Posted 2023-05-08

【中文标题】CodeIgniter set_value() 不工作？

【英文标题】：The CodeIgniter set_value() not working?

【发布时间】：2014-06-26 18:43:49

【问题描述】：

我正在开发一个使用 CI 验证规则的类别模块。当验证规则失败时，我希望表单具有与用户输入的相同的值。在验证规则失败后，我使用 set_value 函数在表单中加载值。但是每次验证失败时，值都会设置为空白。

这是我的代码。我已经在构造函数中设置了验证规则。

$this->form_validation->set_rules($this->validation_rules);
if ($this->input->post()) 
$db_array=array(
    'CategoryName' => $this->input->post('CategoryName'),
    'ParentID' => $this->input->post('ParentID'),
    'Status' => $this->input->post('Status')
    );
if($this->form_validation->run() != false)

    if($id)
    
        $result = $this->category_m->update($db_array,$id);
        if(isset($result['error'])&& count($result['error']>0))
        
            foreach($result['error'] as $error)
               
                $this->session->set_flashdata('error',$error);
            
        
        if($result['success'])
        
            $action['class'] = 'success';
            $action['msg'] = 'Data added successfully.';
            $this->session->set_flashdata('success',$action);
        
        else
        
            $action['class'] = 'error';
            $action['msg'] = 'Invalid values to the form!';
            $this->session->set_flashdata('error',$action);
        
    
    else
    
        $result = $this->category_m->insert($db_array);
        if(isset($result['error']) && count($result['error']>0))
        
            foreach($result['error'] as $error)
            
                $this->session->set_flashdata('error',$error);
            
        
        if($result['success'])
        
            $action['class'] = 'success';
            $action['msg'] = 'Data added successfully.';
            $this->session->set_flashdata('sucess',$action);
        
        else
        
            $action['class'] = 'error';
            $action['msg'] = 'Invalid values to the form!';
            $this->session->set_flashdata('error',$action);
        
    
    if(isset($this->input->post['frmSubmit']))
    
        redirect('category/form/'.$result['CategoryID']);
    
    else
    
        redirect('category/index');
    

 
else 

    $categories = $this->category_m->getCategoryName(true);
    $data['categories'] = convert_to_dropdown($categories,'CategoryName','CategoryID','Select Parent                  Category'); 
    $data['CategoryName'] = set_value('CategoryName');
    $data['ParentID'] = set_value('ParentID');
    $data['Status'] = set_value('Status');



if($id)

$category = $this->category_m->getCategory($id);
$data['CategoryName'] = $category->CategoryName;
$data['ParentID'] = $category->ParentID;
$data['Status'] = $category->Status;

else
 
$data['CategoryName'] = '';
$data['ParentID'] = '';
/*foreach($this->validation_rules as $rule)
    //$data['category']->$rule['field'] = set_value($rule['field']);
*/

$categories = $this->category_m->getCategoryName(true, $id);
$data['categories'] =                                                convert_to_dropdown($categories,'CategoryName','CategoryID','Select Parent Category'); 
$this->load->view('form',$data);

【问题讨论】：

这里的代码相当多。请删除与问题无关的代码。

【参考方案1】：

改变这段代码的位置。

else 

    $categories = $this->category_m->getCategoryName(true);
    $data['categories'] = convert_to_dropdown($categories,'CategoryName','CategoryID','Select Parent                  Category'); 
    $data['CategoryName'] = set_value('CategoryName');
    $data['ParentID'] = set_value('ParentID');
    $data['Status'] = set_value('Status');

作为

if($this->input->post()) 
  

   $categories = $this->category_m->getCategoryName(true);
   $data['categories'] = convert_to_dropdown($categories,'CategoryName','CategoryID','Select Parent Category'); 
   $data['CategoryName'] = set_value('CategoryName');
   $data['ParentID'] = set_value('ParentID');
   $data['Status'] = set_value('Status');
  
  else if($id)
  
   $category = $this->category_m->getCategory($id);
   $data['CategoryName'] = $category->CategoryName;
   $data['ParentID'] = $category->ParentID;
   $data['Status'] = $category->Status;
  
  else
   
   $data['CategoryName'] = '';
   $data['ParentID'] = '';
  

一定会成功的