我使用codeigniter进行登录表单验证。代码以前工作得很好，但当我做了一些修改，它只是不工作了。
当我尝试输入错误或为密码或用户名留空时，错误消息显示为正常，但当我输入正确的用户名和密码时，$this->form_validation->run()只是给我FALSE一个空的validation_errors()字符串。
我已经尝试恢复我的旧的工作控制器php，但是这个错误抵抗。
完整的相关代码可在
- 用户控制器http://pastebin.com/nt2SDVnv
- 登录视图http://pastebin.com/9hEc0EJB
- 用户模型http://pastebin.com/p1z0zLM8
下面只粘贴相关代码:
控制器:
<?php
class User extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->library('form_validation');
$this->load->model('user_model');
$this->load->helper('url');
$this->load->helper('form');
$this->load->helper('cookie');
}
function login(){
$this->form_validation->set_rules('username', 'Username', 'trim|required|xss_clean|callback_username_check');
$this->form_validation->set_rules('password', 'Password', 'trim|required|md5|callback_password_check');
$this->_username = $this->input->post('username'); //用户名
$remember_me = $this->input->post('remember_me');
$json_string = $this->input->cookie('userinfo');
$userinfo_json = json_decode($json_string);
if(isset($userinfo_json->username)){
if ($this->username_check($userinfo_json->username)){
$this->user_model->login($userinfo);
redirect('admin/dashboard');
}
}
if ($this->form_validation->run() == FALSE){
$this->load->view('account/login');
} else {
$userinfo=$this->user_model->get_by_username($this->_username);
$this->user_model->login($userinfo);
if($remember_me=="on"){$this->user_model->write_session($userinfo);}
redirect('admin/dashboard');
}
}
function username_check($username){
if ($this->user_model->get_by_username($username)){
return TRUE;
}else{
$this->form_validation->set_message('username_check', 'User name not exist.');
return FALSE;
}
}
function password_check($password) {
$password = md5($password);
if ($this->user_model->password_check($this->_username, $password)){
return TRUE;
}else{
$this->form_validation->set_message('password_check', 'Incorrect username or paswsword.');
return FALSE;
}
}
}
视图:
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Login - <?=$this->admin_model->get_title();?></title>
<?php $this->load->view('gy/head');?>
</head>
<body>
<?php $this->load->view('gy/header');?>
<div class="hero-unit header">
<div class="container">
<div style="text-align:center;">
<h1>Sign in</h1>
<p class="lead">Log into <?=$this->admin_model->get_title();?>.</p>
</div>
</div>
</div>
<div class="container">
<div class="span5 offset3">
<?php if(validation_errors() !== '' || @(!$err_message == '')){ ?>
<div class="alert alert-error fade in">
<a href="#" class="close" data-dismiss="alert">×</a>
<strong>Error!</strong> <?=validation_errors('<span>','</span>');?> <?=@$err_message?>
</div>
<?php } ?>
<?php if(@$message!=''){ ?>
<div class="alert fade in alert-success">
<a href="#" class="close" data-dismiss="alert">×</a>
<strong>Success!</strong> <?=$message?>
</div>
<?php } ?>
<?php echo form_open('login',array('class'=>'form-horizontal')); ?>
<div class="control-group">
<label class="control-label" for="username">User name</label>
<div class="controls">
<input type="text" id="username" name="username" placeholder="User name">
</div>
</div>
<div class="control-group">
<label class="control-label" for="password">Password</label>
<div class="controls">
<input type="password" id="password" name="password" placeholder="Password">
</div>
</div>
<label for="remember_me" class="checkbox">
<input type="checkbox" id="remember_me" name="remember_me"> Remember me (30 days)
</label>
<div style="text-align:center;">
<input type="submit" name="submit" value="Log in" class="btn btn-primary">
</div>
</Form>
</div>
</div>
<?php $this->load->view('gy/footer');?>
</body>
</html>
模型:
<?php
class user_model extends CI_Model {
public function __construct()
{
parent::__construct();
$this->load->database();
$this->load->library('session');
}
function login($userinfo)
{
$data = array('username'=>$userinfo->username,
'user_id'=>$userinfo->id,
'role'=>$userinfo->role,
'logged_in'=>TRUE);
$this->session->set_userdata($data);
}
function write_session($userinfo)
{
$user_json = json_encode($userinfo);
$cookie = array(
'name' => 'userinfo',
'value' => $user_json,
'expire' => '2592000',
'secure' => TRUE
);
$this->input->set_cookie($cookie);
}
function get_by_username($username)
{
$this->db->where('username', $username);
$query = $this->db->get('users');
if ($query->num_rows() == 1)
{
return $query->row();
}
else
{
return FALSE;
}
}
function password_check($username, $password)
{
if($user = $this->get_by_username($username))
{
return $user->password == $password ? TRUE : FALSE;
}
return FALSE;
}
}
我怀疑是修剪规则。它不返回布尔值，我猜你没有为那个规则设置任何错误信息。在验证运行成功后，Trim()应该在用户名和密码上运行。如果你只是想检查输入是否有空格，你可以添加一个规则来检查strpos()，但还是在自定义回调中。只要记住使用相同运算符"==="，而不是相等的"=="。
控制器:
$this->form_validation->set_rules('username','Username','callback_space_check|required|xss_clean|callback_username_check');
function space_check($input){
if(strpos(' ',$input)===false){
return TRUE;
}else{
$this->form_validation->set_message('space_check', '%s contains space.');
return FALSE;
}
}