当我使用另一个控制器渲染页面时，表单验证停止工作

我编写了一个快速 CI 库类来渲染我的页面，这样我就不必一直输入“$this->load->view”并且保持 DRY。现在，当我在传递无效数据后重新呈现联系表单时，错误消息不会显示。

图书馆类：

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');

    }  

}

和控制器：

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

联系表格视图：

<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'); ?>  

如何使用此帮助程序渲染页面并仍然从 form_validation 库检索错误消息？

创建一个名为template.php在您的视图文件夹中，其中包含以下代码：

<?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');

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

您不需要创建库来执行此操作，因为您只需创建一个模板视图即可加载适当的视图和指定的视图并将数据传递给它们。