我有非常简单的页面，需要登录才能查看。我有一个登录控制器和视图，成功登录后将重定向到主页。但是，如果用户直接访问主页链接，我想检测用户是否登录，如果未登录，则应将用户重定向回登录页面。
我的登录控制器：
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Login extends CI_Controller {
public function index()
{
$this->load->view('login_view');
}
public function process()
{
$user = $this->input->post('user');
$pass = $this->input->post('pass');
if ($user=='admin' && $pass=='123')
{
$this->session->set_userdata(array('user'=>$user));
redirect("Report");
}
else{
$data['error'] = 'Your Account is Invalid';
$this->load->view('login_view', $data);
}
}
public function logout()
{
$this->session->unset_userdata('user');
redirect("Login");
}
}
?>
和我的登录视图：
<!DOCTYPE html>
<html>
<head>
<title>Login Page</title>
</head>
<body>
<?php echo isset($error) ? $error : ''; ?>
<form method="post" action="<?php echo base_url('Login/process'); ?>">
<table cellpadding="2" cellspacing="2">
<tr>
<td><th>Username:</th></td>
<td><input type="text" name="user"></td>
</tr>
<tr>
<td><th>Password:</th></td>
<td><input type="password" name="pass"></td>
</tr>
<tr>
<td> </td>
<td><input type="submit" value="Login"></td>
</tr>
</table>
</form>
</body>
</html>
虽然登录过程运行良好，但我不确定如何从我的主页获取会话以检测用户是否已登录。我知道我应该在主控制器中添加一些验证，但我不确定如何，请帮助谢谢。
主控制器：
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class EstoreReport extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->model('ReportModel');
}
public function index()
{
$report=new ReportModel;
$data['data']=$report->get_report();
$this->load->view('includes/header');
$this->load->view('Report/list',$data);
$this->load->view('includes/footer');
}
您可以创建一个函数并调用它来检查用户是否已登录
public function is_logged_in()
{
$user = $this->session->userdata('user_data');
return isset($user);
}
假设您自动加载了会话帮助程序，就像Login控制器上的验证一样，您可以在主/报告控制器的index方法中设置验证：
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class EstoreReport extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->model('ReportModel');
}
public function index()
{
if (!isset($this->session->userdata('user'))) {
redirect("Login");
} else {
$report=new ReportModel;
$data['data']=$report->get_report();
$this->load->view('includes/header');
$this->load->view('Report/list',$data);
$this->load->view('includes/footer');
}
}
您可以根据 CI 文档使用$this->session->has_userdata()
所以
// Write a boolean returning method
/**
* Returns if there is a user session
*
* @return bool
*/
public function isLoggedIn()
{
return $this->session->has_userdata($some_defined_key_like_user_id);
}
...
// Then in your index controller method
/**
* Index controller method
*
* @return void
*/
public function index()
{
$this->isLoggedIn() ? $this->load()->view('login') : redirect("Report");
}
只需在控制器index()中进行简单配置：
使用$this->session->userdata('user') == NULL检查用户是否已登录
public function index()
{
if($this->session->userdata('user') == NULL)
{
redirect('Login');
}
else
{
$report=new ReportModel;
$data['data']=$orders->get_report();
$this->load->view('includes/header');
$this->load->view('Report/list',$data);
$this->load->view('includes/footer');
}
}
试试这个
class Login extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->model('loginmodel', 'login');
$this->load->library('form_validation');
}
public function index() {
$this->load->view('admin/login');
}
// Check for user login process
public function user_aouth() {
$this->form_validation->set_rules('username', 'Username', 'trim|required');
$this->form_validation->set_rules('password', 'Password', 'trim|required');
if ($this->form_validation->run() == FALSE) {
$this->session->set_flashdata('error', 'Invalid Username and Password');
redirect('login');
} else {
$username = $this->input->post('username');
$password = $this->input->post('password');
$data = array(
'username' => $username,
'password' => $password
);
if ($this->login->check_valid_user_details($data)) {
$session_data = array(
'username' => $username
);
$this->session->set_userdata($session_data);
//redirect to admin user dashboard
redirect('dashboard');
} else {
$this->session->set_flashdata('error', 'Invalid Username and Password');
redirect('login');
}
}
}
public function logout() {
$this->session->unset_userdata('username');
$this->session->sess_destroy();
redirect('login');
}
}
在您的登录模型中
public function check_valid_user_details($data) {
$condition = "username=" . "'" . $data['username'] . "'" . "AND password=" . "'" . $data['password'] . "'";
$c = $this->db->select('*')
->from('admin')
->where($condition)
->limit(1);
$query = $this->db->get();
if ($query->num_rows() == 1) {
return $query->result();
} else {
return FALSE;
}
}
在仪表板下每个页面的顶部使用它
if($this->session->userdata('username') == NULL){
redirect('login');
}
控制器
public function index()
{
//redirect to dashboard
$this->dashboard();
}
public function dashboard()
{ //session wise operating isset session-> dashboard ,else login page
if ($this->session->userdata('userName')) {
//if user found
return $this->load->view('dashboard');
} else {
//if "no user found"
return $this->load->view('login');
}
}
public function login_check()
{ //functions retrives two values 1-user type 2-userId
$data['userdata'] = $this->Mdl_login->Login_check();
if ($data['userdata'] == false) {
$this->load->view('login', $data);
} else {
redirect(base_url('index.php/dashboard'), 'refresh');
}
}
function logout()
{ //session destroy function
$this->session->unset_userdata('userName');
redirect(base_url(), 'refresh');
}
型
function Login_check()
{
$username = $this->input->post('UserName');
$password = $this->input->post("PassWord");
//check with your value
$this->db->where('userName', $username);
$this->db->where('password', $password);
$qry_getuserdata = $this->db->get('user_tbl');
if ($qry_getuserdata->num_rows() > 0) {
$result = $qry_getuserdata->result();
$userid = $result[0]->userId;
$usertype = $result[0]->userType;
$email = $result[0]->email;
$this->session->set_userdata('userName', $username);
$this->session->set_userdata('userId', $userid);
$this->session->set_userdata('userType', $usertype);
$this->session->set_userdata('email', $email);
return true;
} else {
return false;
}
}
现在，您可以在任何地方访问会话数据
if(isset($_SESSION['userName'])){ $data['userName']= $_SESSION['userName']; }
您可以从下面的函数调用中使用 true 或 false，在控制器中调用此函数，然后根据响应重定向。
$this->session->userdata( 'logged_in' );