Codeigniter：助手功能未加载
[英]Codeigniter:Helper functions are not loaded
问题描述
I have created a form and without entering the data in fields when i submit it,it redirect on blank page instead of the page which open with form_open() after loading the form helper in my controller. 
我已经创建了一个表单，并且在提交表单时没有在字段中输入数据，而是在将表单助手加载到控制器中后，它重定向到空白页面，而不是使用form_open（）打开的页面。 In fact i am unable to use the functionality of the url helper.I have post this issue in another way but didn't get any solution. 实际上我无法使用url helper的功能。我已经以另一种方式发布了此问题，但是没有任何解决方案。 i have tried the below code from codeigniter documentation but it's not working for me. 我已经尝试了来自codeigniter文档的以下代码，但对我而言不起作用。
Why this is happening . 为什么会这样。 Please help me to solve it. 请帮我解决。
Controller: 控制器：
class Login extends CI_Controller{
function index()
{
$this->load->helper(array('form', 'url'));
$this->load->library('form_validation');
$this->form_validation->set_rules('username', 'Username', 'required');
$this->form_validation->set_rules('password', 'Password', 'required');
$this->form_validation->set_rules('passconf', 'Password Confirmation', 'required');
$this->form_validation->set_rules('email', 'Email', 'required');
if ($this->form_validation->run() == FALSE)
{
$this->load->view('login_form');
}
else
{
$this->load->view('success');
}
}
}
login_form view : login_form视图：
<html>
<head>
<title>My Form</title>
</head>
<body>
<?php echo validation_errors(); ?>
<?php echo form_open('login'); ?>
<h5>Username</h5>
<input type="text" name="username" value="" size="50" />
<h5>Password</h5>
<input type="text" name="password" value="" size="50" />
<h5>Password Confirm</h5>
<input type="text" name="passconf" value="" size="50" />
<h5>Email Address</h5>
<input type="text" name="email" value="" size="50" />
<div><input type="submit" value="Submit" /></div>
</form>
</body>
</html>
success view: 成功视图：
<html>
<head>
<title>My Form</title>
</head>
<body>
<h3>Your form was successfully submitted!</h3>
<p><?php echo anchor('form', 'Try it again!'); ?></p>
</body>
</html>
Thanks in advance... 提前致谢...
6 个解决方案
解决方案1
0 2016-11-24 07:46:47
$this->load->helper('form', 'url');
$ this-> load-> helper（'form'，'url'）;
instead of
$this->load->helper(array('form', 'url'));
而不是
$this->load->helper(array('form', 'url'));
should work ok.
应该可以。
Edit: Not sure what the problem is, but did you try loading the helpers inside /application/config/autoload.php ? 编辑：不确定是什么问题，但是您是否尝试在/application/config/autoload.php加载帮助程序？
$autoload['helper'] = array('form', 'url');
解决方案2
0 2016-11-24 07:58:41
Your code seems correct did you configure your .htaccess file. 如果您配置了.htaccess文件，则您的代码似乎正确。 Because i tried your code it all working fine.When i submit the blank form its give validation error. 因为我尝试了您的代码，所以一切正常。当我提交空白表格时，给出了验证错误。
code for .htaccess file .htaccess文件的代码
DirectoryIndex index.php
RewriteEngine on
RewriteCond $1 !^(index\.php|(.*)\.swf|forums|images|css|downloads|jquery|js|robots\.txt|favicon\.ico)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ ./index.php?$1 [L,QSA]
解决方案3
0 2016-11-24 08:00:19
do you add parent::__construct() in your __construct() ? 在__construct()添加parent::__construct() __construct()吗？
class Login extends CI_Controller{
public function __construct()
{
parent::__construct();
$this->load->helper(array('form', 'url'));
}
....
解决方案4
0 2016-11-24 09:02:46
In your login controller : 在您的login控制器中：
<?php
class Login extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->helper(array('form', 'url'));
}
public function index() {
$data = array();
$data['title'] = 'Login Form';
$this->load->view('login_form', $data);
}
public function save() {
$this->load->library('form_validation');
$this->form_validation->set_rules('username', 'Username', 'required');
$this->form_validation->set_rules('password', 'Password', 'required');
$this->form_validation->set_rules('passconf', 'Password Confirmation', 'required');
$this->form_validation->set_rules('email', 'Email', 'required');
if ($this->form_validation->run() != FALSE)
{
redirect('login/success');
}
else
{
$this->index();
}
}
public function success() {
$data = array();
$data['title'] = 'Successfully Submitted';
$this->load->view('success_view', $data);
}
}
?>
Change form action in your login view page 在您的登录视图页面中更改表单操作
<?php echo form_open('login/save'); ?>
or 要么
<form method="post" action="<?php echo base_url(); ?>login/save">
Note : You can run your login form in your browser like http://localhost/project_folder/login/ 注意：您可以在浏览器中运行登录表单，例如http://localhost/project_folder/login/
解决方案5
0 2016-11-24 09:53:10
Could try creating a construct class 可以尝试创建一个构造类
Make sure file name is Login.php first letter only is all ways upper case codeigniter ucfirst sometimes can cause issues if not done like here
class Login extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->helper('url');
$this->load->helper('form');
$this->load->library('form_validation');
}
function index() {
$this->form_validation->set_rules('username', 'Username', 'required');
$this->form_validation->set_rules('password', 'Password', 'required');
$this->form_validation->set_rules('passconf', 'Password Confirmation', 'required');
$this->form_validation->set_rules('email', 'Email', 'required');
if ($this->form_validation->run() == FALSE)
{
$this->load->view('login_form');
}
else
{
$this->load->view('success');
}
}
}
解决方案6
0 2018-05-25 15:42:04
Try add this 尝试添加这个
parent::__construct();
to your constructor, so 给你的构造函数
function __construct(){
parent::__construct();
}
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