CodeIgniter的set_value（）不重新填充 [英] CodeIgniter's set_value() not re-populating

问题描述

我已检查并重新检查我的代码，引用了整个网络中的CI文档和其他帖子，但是在验证失败后实现set_value（）方法重新填充表单字段时失败。
也许我缺少一个非常基本的CI框架（我是相当新的），但你的见解会非常感激。

我有以下在我的控制器方法：

  public function form_step2（）{
 //表单设置
 this-> load-> helper（'form'）; 
 $ this-> load-> helper（'url'）; 
 $ this-> load-> library（'form_validation'）; 
 $ data ['title'] = $ this-> base_title; 
 $ data ['base_url'] = base_url（）; 
 
 //验证设置 - 必须每步设置
 $ this-> form_validation-> set_rules（'request_type'，'Request Type'，'required'）; 
 * ...更多相同的set_rules（）* 
 
 
 if（$ this-> form_validation-> run（）=== FALSE）{
 ###验证失败或新表单
 
 //获取表单元素数据
 $ data ['request_types'] = $ this-> my_model-> get_form_data（'request_type' ）; 
 * ...更多相同的get_form_data（）调用加载表单元素* 
 
 //从视图模板生成页面
 $ this-> load-> view （'templates / header'，$ data）; 
 $ this-> load-> view（'templates / form_step2'，$ data）; 
 $ this-> load-> view（'templates / footer'）; 
} else {
 ###保存到数据库
 $ this-> my_model-> set_data（$ data）; 
 
 redirect（'my_model / success'，'refresh'）; 
} 
} 
  

在我看来，不重新填充：

 <？php echo form_open（'my_model / form_step2'，array（'class'=> ;'form-inline'））; > 
 
< label for =fname>名字< / label> 
< input type =textid =fnamename =fnamevalue =<？php echo set_value（'fname'）;？& /> 
< input type =submitname =submitvalue =Submit/> 
  

我无法想象这一个，所以先感谢您的帮助。

解决方案

如果要使用 set_data（），还需要使用 set_rules

$

$ b $ p

因为你已经注释掉了所有的set_rules，所以我不能确认这是

<$ c

$ c> $ this-> form_validation-> set_rules（'fname'，'First name'，'trim | required'）;

因此，如果你想用 name =fname重新填充字段，你需要有 set_rules（） code>，否则不会处理，因此 set_value（'fname'）为空。

I've checked and re-checked my code, referencing the CI docs and other posts throughout the web, but I am unsuccessful at implementing the set_value() method for re-populating form fields after failed validation. Perhaps I am missing something very fundamental to the CI framework (I'm rather new to it), but your insight would be much appreciated.

I have the following in my controller method:

public function form_step2(){
    //Form Setup
    $this->load->helper('form');
    $this->load->helper('url');
    $this->load->library('form_validation');
    $data['title'] = $this->base_title;
    $data['base_url'] = base_url();

    //Validation Settings - must be set per step
    $this->form_validation->set_rules('request_type', 'Request Type', 'required');
    *...more of the same set_rules()*


    if ($this->form_validation->run() === FALSE) {
        ### Validation failed or New Form

        // Get form element data
        $data['request_types'] = $this->my_model->get_form_data('request_type');
        *...more of the same get_form_data() calls for loading form elements*

        //Generate Page from View Templates
        $this->load->view('templates/header', $data);
        $this->load->view('templates/form_step2', $data);
        $this->load->view('templates/footer');
    } else {
        ### Save to database
        $this->my_model->set_data($data);

        redirect('my_model/success','refresh');
    }
}

And in my view, a snippet of the code that is not re-populating:

<?php echo form_open('my_model/form_step2', array('class'=>'form-inline')); ?>

<label for="fname">First Name</label>
<input type="text" id="fname" name="fname" value="<?php echo set_value('fname'); ?>" />
<input type="submit" name="submit" value="Submit" />

I can't figure this one out, so thanks in advance for your help.

解决方案

if you want to use set_data() you need to also use set_rules for that POST/GET field.

Since you've commented out all your set_rules I can not confirm that this is the issue but most likely it is.

please check if you have this line in your code

$this->form_validation->set_rules('fname', 'First name', 'trim|required');

So if you want to re-populate field with name="fname" you need to have set_rules() // as line above for it otherwise it won't process therefore set_value('fname') is empty.

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