当我使用另一个控制器渲染页面时，表单验证停止工作 [英] Form validation stops working when I render pages using another controller

问题描述

我写了一个快速的CI库类来渲染我的页面，所以我不需要一直输入'$ this-> load-> view'和DRY。现在，当我在传递无效数据后重新呈现联系人表单时，错误消息不会出现。

库类：

class扩展CI_Controller {

public function render（$ page，$ data）{// $ page应为页面视图的路径

$ this-> load-> view（'fragments / header'，$ data）;
$ this-> load-> view（'fragments / navigation'）;
$ this-> load-> view（$ page）;
$ this-> load-> view（'fragments / navigation'）;
$ this-> load-> view（'fragments / footer'）;

}

}


：

  class Contact extends CI_Controller {
 
 public function __construct（）{
 parent： ：__构造（）; 
 
 $ this-> load-> helper（'form'）; 
 $ this-> load-> library（array（'form_validation'，'email'，'page'））; 
} 
 
 public function index（）{
 
 $ this-> form_validation-> set_rules（'sender_name'，'From'，'required'） ; 
 $ this-> form_validation-> set_rules（'sender_email'，'Email'，'required | valid_email'）; 
 $ this-> form_validation-> set_rules（'subject'，'Subject'，'required'）; 
 $ this-> form_validation-> set_rules（'message'，'Message'，'required'）; 
 
 if（$ this-> form_validation-> run（）=== FALSE）{
 
 $ this-> load-& ）; 
 $ this-> page-> render（'contact / contact'，array（'title'=>'Contact Me'））; //传递页面标题
 
 / *这样工作
 $ this-> load-> view（'fragments / header'，array（'title'=>联络我'））; // pass in page title 
 $ this-> load-> view（'fragments / navigation'）; 
 $ this-> load-> view（'contact / contact'）; // TODO maintain form state 
 $ this-> load-> view（'fragments / navigation'）; 
 $ this-> load-> view（'fragments / footer'）; 
 * 
 * / 
} 
 
 // SNIP 
  

b $ b

联络表单检视：

 < h1>与我联络< / h1> 
<？php echo form_open（'contact'，'id =contact_form'）; > 
 
< label for =sender_name>名称：< / label> 
<？php echo form_input（'sender_name'）; > 
< span class =error><？php echo form_error（'sender_name'）; ？>< / span> 
 
< label for =sender_email>电子邮件：< / label> 
<？php echo form_input（'sender_email'）; > 
< span class =error><？php echo form_error（'sender_email'）; ？>< / span> 
 
< label for =subject>主题：< / label> 
<？php echo form_input（'subject'）; > 
< span class =error><？php echo form_error（'subject'）; ？>< / span> 
 
< label for =message>邮件：< / label> 
<？php echo form_textarea（'message'）; > 
< span class =error><？php echo form_error（'message'）; ？>< / span> 
 
<？php echo form_submit（'submit'，'Send'）; > 
 

如何使用此帮助程序呈现页面，仍然从form_validation库检索错误消息？

解决方案

在您的views文件夹中创建一个名为 template.php 的视图， it：

 <？php 
 
 $ this-> load-& fragments / header'，$ this-> _ci_cached_vars）; // pass $ data vars 
 $ this-> load-> view（'fragments / navigation'）; 
 $ this-> load-> view（$ view）; 
 $ this-> load-> view（'fragments / navigation'）; 
 $ this-> load-> view（'fragments / footer'）; 
  

然后使用以下控制器代码：

  public function index（）{
 
 $ this-> form_validation-> set_rules（'sender_name'，'From'，'required'）; 
 $ this-> form_validation-> set_rules（'sender_email'，'Email'，'required | valid_email'）; 
 $ this-> form_validation-> set_rules（'subject'，'Subject'，'required'）; 
 $ this-> form_validation-> set_rules（'message'，'Message'，'required'）; 
 
 if（$ this-> form_validation-> run（）=== FALSE）{
 
 $ data = array（
'view'=> ;'contact / contact'，
'title'=>'与我联系'）; 
 $ this-> load-> view（'template'，$ data）; 
} 
  

您不需要创建库，创建一个模板视图，它将加载适当的视图和指定的视图，并将数据传递给它们。

I wrote a quick CI library class to render my pages so I wouldn't have to keep typing '$this->load->view' all the time and for DRY. Now when I re-render my contact form after passing in invalid data the error messages aren't showing up.

The library class:

class Page extends CI_Controller {

    public function render($page, $data) { // $page should be path to page view

        $this->load->view('fragments/header', $data);
        $this->load->view('fragments/navigation');
        $this->load->view($page);
        $this->load->view('fragments/navigation');
        $this->load->view('fragments/footer');

    }  

}

and the controller:

class Contact extends CI_Controller {

    public function __construct() {
        parent::__construct();

        $this->load->helper('form');
        $this->load->library(array('form_validation', 'email', 'page'));
    }

    public function index() {

        $this->form_validation->set_rules('sender_name', 'From', 'required');
        $this->form_validation->set_rules('sender_email', 'Email', 'required|valid_email');
        $this->form_validation->set_rules('subject', 'Subject', 'required');
        $this->form_validation->set_rules('message', 'Message', 'required');

        if ($this->form_validation->run() === FALSE) {

            $this->load->library('page');
            $this->page->render('contact/contact', array('title' => 'Contact Me')); // pass in page title

            /* IT WORKED THIS WAY
            $this->load->view('fragments/header', array('title' => 'Contact Me')); // pass in page title
            $this->load->view('fragments/navigation');
            $this->load->view('contact/contact'); // TODO maintain form state
            $this->load->view('fragments/navigation');
            $this->load->view('fragments/footer');
             * 
             */
        }

//SNIP

contact form view:

<h1>Contact Me</h1>
<?php echo form_open('contact', 'id="contact_form"'); ?>

<label for="sender_name">Name:</label>
<?php echo form_input('sender_name'); ?>
<span class="error"><?php echo form_error('sender_name'); ?></span>

<label for="sender_email">Email:</label>
<?php echo form_input('sender_email'); ?>
<span class="error"><?php echo form_error('sender_email'); ?></span>

<label for="subject">Subject:</label>
<?php echo form_input('subject'); ?>
<span class="error"><?php echo form_error('subject'); ?></span>

<label for="message">Message:</label>
<?php echo form_textarea('message'); ?>
<span class="error"><?php echo form_error('message'); ?></span>

<?php echo form_submit('submit', 'Send'); ?>  

How can I render pages using this helper and still retrieve error messages from form_validation library?

解决方案

Create a view called template.php in your views folder with the following code in it:

<?php

$this->load->view('fragments/header', $this->_ci_cached_vars); // pass $data vars
$this->load->view('fragments/navigation');
$this->load->view($view);
$this->load->view('fragments/navigation');
$this->load->view('fragments/footer');

Then use the below controller code:

public function index() {

    $this->form_validation->set_rules('sender_name', 'From', 'required');
    $this->form_validation->set_rules('sender_email', 'Email', 'required|valid_email');
    $this->form_validation->set_rules('subject', 'Subject', 'required');
    $this->form_validation->set_rules('message', 'Message', 'required');

    if ($this->form_validation->run() === FALSE) {

        $data = array(
            'view' => 'contact/contact', 
            'title' => 'Contact Me');
        $this->load->view('template', $data);
    }

You don't need to create a library to do this as you can just create a template view which will load the appropriate views and the specified view and pass the data along to them.

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