php 如果密码正确，带有会话的 Codeigniter 登录系统将用户重定向到页面
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/28557129/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
提示：将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间：2020-08-25 23:55:58 来源:igfitidea点击:
Codeigniter login system with session to redirect user to page if password correct
提问by Veronica
I created a login system but every time I setup an if statement it loops back to the login page when I enter correct password. I need the index function in the controller, the list_employee function and View_employee function to redirect user to login page if they access it directly but if they enter correct password allow them to go to it.
我创建了一个登录系统，但每次设置 if 语句时，当我输入正确的密码时，它都会循环回到登录页面。我需要控制器中的 index 函数、list_employee 函数和 View_employee 函数将用户重定向到登录页面，如果他们直接访问它，但如果他们输入正确的密码允许他们访问它。
user_authentication controller
user_authentication 控制器
<?php
session_start(); //we need to start session in order to access it through CI
Class User_Authentication extends CI_Controller {
public function __construct() {
parent::__construct();
// Load form helper library
$this->load->helper('form');
// Load form validation library
$this->load->library('form_validation');
// Load session library
$this->load->library('session');
// Load database
$this->load->model('login_database');
}
// Show login page
public function user_login_show() {
$this->load->view('login_form');
}
// Show registration page
public function user_registration_show() {
$this->load->view('registration_form');
}
// Validate and store registration data in database
public function new_user_registration() {
// Check validation for user input in SignUp form
$this->form_validation->set_rules('name', 'Name', 'trim|required|xss_clean');
$this->form_validation->set_rules('username', 'Username', 'trim|required|xss_clean');
$this->form_validation->set_rules('email_value', 'Email', 'trim|required|xss_clean');
$this->form_validation->set_rules('password', 'Password', 'trim|required|xss_clean');
if ($this->form_validation->run() == FALSE) {
$this->load->view('registration_form');
} else {
$data = array(
'name' => $this->input->post('name'),
'user_name' => $this->input->post('username'),
'user_email' => $this->input->post('email_value'),
'user_password' => $this->input->post('password')
);
$result = $this->login_database->registration_insert($data) ;
if ($result == TRUE) {
$data['message_display'] = 'Registration Successfully !';
$this->load->view('login_form', $data);
} else {
$data['message_display'] = 'Username already exist!';
$this->load->view('registration_form', $data);
}
}
}
// Check for user login process
public function user_login_process() {
$this->form_validation->set_rules('username', 'Username', 'trim|required|xss_clean');
$this->form_validation->set_rules('password', 'Password', 'trim|required|xss_clean');
if ($this->form_validation->run() == FALSE) {
$this->load->view('login_form');
} else {
$data = array(
'username' => $this->input->post('username'),
'password' => $this->input->post('password')
);
$result = $this->login_database->login($data);
if($result == TRUE){
$sess_array = array(
'username' => $this->input->post('username')
);
// Add user data in session
$this->session->set_userdata('logged_in', $sess_array);
$result = $this->login_database->read_user_information($sess_array);
if($result != false){
$data = array(
'name' =>$result[0]->name,
'username' =>$result[0]->user_name,
'email' =>$result[0]->user_email,
'password' =>$result[0]->user_password
);
redirect('employee');
}
}else{
$data = array(
'error_message' => 'Invalid Username or Password'
);
$this->load->view('login_form', $data);
}
}
}
// Logout from admin page
public function logout() {
// Removing session data
$sess_array = array(
'username' => ''
);
$this->session->unset_userdata('logged_in', $sess_array);
$data['message_display'] = 'Successfully Logout';
$this->load->view('login_form', $data);
}
}
?>
employee controller
员工控制员
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Employee extends CI_Controller {
function __construct()
{
parent::__construct();
$this->load->model('login/employee_model');
}
//Shows the dashboard
public function index()
{
$this->load->view('header');
$this->load->view('employee');
$this->load->view('login/footer');
}
//Insert the employee
public function insert_employee()
{
$data=array('name'=>$this->input->post('name'),
'LanId'=>$this->input->post('LanId'),
'reason'=>$this->input->post('reason'),
'PepNumber'=>$this->input->post('PepNumber'),
'Employee_Number'=>$this->input->post('Employee_Number'),
'department'=>$this->input->post('department'),
'status'=>1);
//print_r($data);
$result=$this->employee_model->insert_employee($data);
if($result==true)
{
$this->session->set_flashdata('msg',"Employee Records Added Successfully");
redirect('employee');
}
else
{
$this->session->set_flashdata('msg1',"Employee Records Added Failed");
redirect('employee');
}
}
//List of Employees
public function list_employees()
{
$data['employee']=$this->employee_model->get_employee();
$this->load->view('header');
$this->load->view('list_of_employees',$data);
$this->load->view('login/footer');
}
//List of Employees
public function viewlist_employees()
{
$data['employee']=$this->employee_model->get_employee();
$this->load->view('header');
$this->load->view('viewlist_of_employees',$data);
$this->load->view('login/footer');
}
public function delete_employee()
{
$id=$this->input->post('id');
$data=array('status'=>0);
$result=$this->employee_model->delete_employee($id,$data);
if($result==true)
{
$this->session->set_flashdata('msg1',"Deleted Successfully");
redirect('employee/list_employees');
}
else
{
$this->session->set_flashdata('msg1',"Employee Records Deletion Failed");
redirect('employee/list_employees');
}
}
public function edit_employee()
{
$id=$this->uri->segment(3);
$data['employee']=$this->employee_model->edit_employee($id);
$this->load->view('header',$data);
$this->load->view('edit_employee');
}
public function update_employee()
{
$id=$this->input->post('id');
$data=array('name'=>$this->input->post('name'),
'LanID'=>$this->input->post('LanID'),
'reason'=>$this->input->post('reason'),
'PepNumber'=>$this->input->post('PepNumber'),
'Employee_Number'=>$this->input->post('Employee_Number'),
'department'=>$this->input->post('department'),
'status'=>1);
$result=$this->employee_model->update_employee($data,$id);
if($result==true)
{
$this->session->set_flashdata('msg',"Employee Records Updated Successfully");
redirect('employee/list_employees');
}
else
{
$this->session->set_flashdata('msg1',"No changes Made in Employee Records");
redirect('employee/list_employees');
}
}
}
?>
login_database model
登录数据库模型
<?php
Class Login_Database extends CI_Model {
// Insert registration data in database
public function registration_insert($data) {
// Query to check whether username already exist or not
$condition = "user_name =" . "'" . $data['user_name'] . "'";
$this->db->select('*');
$this->db->from('user_login');
$this->db->where($condition);
$this->db->limit(1);
$query = $this->db->get();
if ($query->num_rows() == 0) {
// Query to insert data in database
$this->db->insert('user_login', $data);
if ($this->db->affected_rows() > 0) {
return true;
}
} else {
return false;
}
}
// Read data using username and password
public function login($data) {
$condition = "user_name =" . "'" . $data['username'] . "' AND " . "user_password =" . "'" . $data['password'] . "'";
$this->db->select('*');
$this->db->from('user_login');
$this->db->where($condition);
$this->db->limit(1);
$query = $this->db->get();
if ($query->num_rows() == 1) {
return true;
} else {
return false;
}
}
// Read data from database to show data in admin page
public function read_user_information($sess_array) {
$condition = "user_name =" . "'" . $sess_array['username'] . "'";
$this->db->select('*');
$this->db->from('user_login');
$this->db->where($condition);
$this->db->limit(1);
$query = $this->db->get();
if ($query->num_rows() == 1) {
return $query->result();
} else {
return false;
}
}
}
?>
employee_model
员工模型
<?php
class Employee_model extends CI_Model
{
public function insert_employee($data)
{
$this->db->insert('employee_list',$data);
return ($this->db->affected_rows() != 1 ) ? false:true;
}
public function get_employee()
{
$this->db->select('*');
$this->db->from('employee_list');
$this->db->where('status',1);
$query =$this->db->get();
return $query->result();
}
public function delete_employee($id,$data)
{
$this->db->where('id',$id);
$this->db->update('employee_list',$data);
return ($this->db->affected_rows() != 1 ) ? false:true;
}
public function edit_employee($id)
{
$this->db->select('*');
$this->db->from('employee_list');
$this->db->where('id',$id);
$this->db->where('status',1);
$query =$this->db->get();
return $query->result();
}
public function update_employee($data,$id)
{
$this->db->where('id',$id);
$this->db->update('employee_list',$data);
return ($this->db->affected_rows() != 1 ) ? false:true;
}
}
采纳答案by Veronica
add if statement with logged_in and a redirect to login form if it is incorrect
添加带有logged_in的if语句，如果不正确则重定向到登录表单
public function index()
{
if($this->session->userdata('logged_in'))
{
$this->load->view('header');
$this->load->view('employee');
$this->load->view('login/footer');
}else{
redirect('user_authentication/user_login_show');
}
}
回答by ankit suthar
Best Practice is to add the check in the constructor of your controller in CI. here is the example of mine.
最佳实践是在 CI 中控制器的构造函数中添加检查。这是我的例子。
public function __construct() {
parent::__construct();
if (!$this->session->userdata('user_data')) {
return redirect('login');
}
$this->load->model('customer_model');
}
you can add the else statement to redirect to the dashboard or what the resulting page if user is logged in.
如果用户登录，您可以添加 else 语句以重定向到仪表板或结果页面。
回答by Jay Bhatia
Add this line of code to your constructors:
将这行代码添加到您的构造函数中：
$this->load->library('session');
This will help you.
这会帮助你。
回答by Jaydev Vara
public function login()
{
$this->load->view('login');
if (isset($_POST['login']))
{
$emailid = $this->input->post('emailid');
$password = $this->input->post('password');
$this->load->model('main_model');
if($this->main_model->can_login('$emailid','$Password'))
{
$session_data = array(
'emailid' => $emailid,
'password' => $password,
'iss_logged_in' => 1
);
$this->session->set_userdata($session_data);
redirect(base_url().'index.php/Hello_cnt/');
}
else
{
$this->session->set_flashdata('error', 'Invalid Username and Password');
redirect(base_url().'index.php/Hello_cnt/login');
}
}
}
