Question

我是CodeIgniter的新手。我打算建立一个非常简单的注册/登录系统用于测试，但我从未通过注册的电子邮件和密码登录。

这是我的Login_controller：

<?php

class Login_controller extends CI_Controller {

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

public function index($msg = NULL) {
    $data['msg'] = $msg;
    $this->load->view('login_view', $data);
}

public function process() {
    // Load the model
    $this->load->model('login_model');
    // Validate the user can login
    $result = $this->login_model->validate();
    // Now we verify the result
    if(! $result) {
        // If not valid user, then show them login page again
        $msg = 'Invalid email and/or password';
        $this->index($msg);
    }
    else {
        // If valid user, go to homepage
        redirect('home_view'); 
    }        
}
}

我的Login_model：

class Login_model extends CI_Model {
function __construct() {
    parent::__construct();
}

public function validate() {
    // Get user input
    $email = $this->input->post('email');
    $password = $this->input->post('password');

    // Prepare the query
    $this->db->select();
    $this->db->from('user');
    $this->db->where('email', $email);
    $this->db->where('password', $password);

    // Run the query
    $query = $this->db->get();

    // Check result
    if($query->num_rows > 0) {
        // If there is a user then create session data
        $row = $query->row();
        $data = array(
                'id' => $row->id,
                'username' => $row->username,
                'email' => $row->email,
                'validated' => true
                );
        $this->session->set_userdata($data);
        return true;
    }
    else {
    // If the previous process did not validate then return false
        return false;
    }
}
}

我的Login_view：

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Login</title>
</head>
<body>
    <h1> Login Zokzak </h1>

    <?php
        echo form_open('Login_controller/process');
    ?>

    Email: <input type="email" name="email"/> <br> <br>
    Password: <input type="password" name="password"/> <br>
    <input type="submit" value="Login"/>

    <?php
        if(!is_null($msg)) {
            echo $msg;
        }
    ?>
</body>
</html>

提前谢谢！

Answer 1

首先，您必须在加载视图和重定向页面之间有所区别。如果home_view为APPPATH.'views'目录，则文件redirect('home_view');将无效。 Redirect function接受REQUEST_URI字符串 - 例如redirect('controller_name/method_name/param1/param2')。查看文件由CI加载程序加载。要创建消息，您需要使用下次请求时可用的flash session。

if(! $result) {
    // If not valid user, then show them login page again
    $this->session->set_flashdata('msg', 'Invalid email and/or password');
    redirect('login_controller');//index method is loaded by default
}
else
{
    $this->session->set_flashdata('msg', 'Successfully Logged In.');
    redirect('top_secret_controller/admin_dashboard_method');
}

在Top_secret_controller.php：

class Top_secret_controller extends CI_Controller
{
    private $logged_in = FALSE;

    public function __construct()
    {
        parent::__construct();
        $this->logged_in = ( isset($_SESSION['validated']) && $_SESSION['validated'] === 1 ) ? TRUE : $this->logged_in;//in your model use integer for validated value instead TRUE to [avoid confusing](https://dev.mysql.com/doc/refman/5.7/en/boolean-literals.html) with converting to integer since in DB it will be writen as 1

        $this->logged_in || redirected('login');//if not logged in redirect to login page
    }

    public admin_dashboard_method()
    {
        //code here
    }
}

快速YT搜索会为您提供有关登录系统的大量视频（例如this one），以便您可以将良好做法与自己的做法进行比较。就个人而言，我正在使用Ion Auth system不想发明轮子（除非我需要一个更圆的：P）。

Codeigniter 3.0.6登录不工作

1 个答案: