Login

subhajitmaity · 02-26-2015, 05:22 AM

I create a simple login system.The code is the following

Create yourcodeigniter/application/models/m_login.php:
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

class M_login extends CI_Model {

function __construct() {
parent::__construct();
$this->load->database();
}

function login($username, $password) {
//create query to connect user login database
$this->db->select('id_admin, name_admin, password');
$this->db->from('admin');
$this->db->where('name_admin', $username);
$this->db->where('password', MD5($password));
$this->db->limit(1);

//get query and processing
$query = $this->db->get();
if($query->num_rows() == 1) {
return $query->result(); //if data is true
} else {
return false; //if data is wrong
}
}
}

/* End of file m_login.php */
/* Location: ./application/models/m_login.php */

Create yourcodeigniter/application/controllers/c_login.php:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class C_login extends CI_Controller {
function index() {
$this->load->helper(array('form','html'));
$this->load->view('v_login'); //load view for login
}
}
/* End of file c_login.php */
/* Location: ./application/controllers/c_login.php */

Create yourcodeigniter/application/views/v_login.php:
<!DOCTYPE html>
<html>
<head>
<title>Simple Login with CodeIgniter</title>
</head>
<body>
<h1>Simple Login with CodeIgniter</h1>
<?php echo validation_errors(); ?>
<?php echo form_open('c_verifylogin');
echo form_label("Username: ");
echo form_input("username");
echo br();
echo form_label("Password: ");
echo form_password("password");
echo br();
echo form_submit("","Login");
echo form_close();
?>
</body>
</html>

Create Verify login on yourcodeigniter/application/controllers/c_verifylogin.php:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class C_verifyLogin extends CI_Controller {
function __construct() {
parent::__construct();
//load session and connect to database
$this->load->model('m_login','login',TRUE);
$this->load->helper(array('form', 'url','html'));
$this->load->library(array('form_validation','session'));
}

function index() {
$this->form_validation->set_rules('username', 'Username', 'trim|required|xss_clean');
$this->form_validation->set_rules('password', 'Password', 'trim|required|xss_clean|callback_check_database');

if($this->form_validation->run() == FALSE) {
$this->load->view('v_login',$data);
} else {
//Go to private area
redirect(base_url('c_home'), 'refresh');
}
}

function check_database($password) {
//Field validation succeeded. Validate against database
$username = $this->input->post('username');
//query the database
$result = $this->login->login($username, $password);
if($result) {
$sess_array = array();
foreach($result as $row) {
//create the session
$sess_array = array('id_admin' => $row->id_admin,
'name_admin' => $row->name_admin);
//set session with value from database
$this->session->set_userdata('logged_in', $sess_array);
}
return TRUE;
} else {
//if form validate false
$this->form_validation->set_message('check_database', 'Invalid username or password');
return FALSE;
}
}
}
/* End of file c_verifylogin.php */
/* Location: ./application/controllers/c_verifylogin.php */

Create yourcodeigniter/application/controllers/c_home.php:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class C_home extends CI_Controller {
function __construct() {
parent::__construct();
$this->load->model('m_login','',TRUE);
$this->load->helper('url');
$this->load->library(array('form_validation','session'));
}

function index() {
if($this->session->userdata('logged_in'))
{
$session_data = $this->session->userdata('logged_in');
$data['username'] = $session_data['name_admin'];
$data['id'] = $session_data['id_admin'];
$this->load->view('v_home', $data);
} else {
//If no session, redirect to login page
redirect('c_login', 'refresh');
}
}

function logout() {
//remove all session data
$this->session->unset_userdata('logged_in');
$this->session->sess_destroy();
redirect(base_url('c_login'), 'refresh');
}

}
/* End of file c_home.php */
/* Location: ./application/controllers/c_home.php */

Create yourcodeigniter/application/views/v_home.php:
<!DOCTYPE html>
<head>
<title>Simple Login with CodeIgniter - Private Area</title>
</head>
<body>
<h1>Home</h1>
<h2>Welcome <?php echo $username; ?>!</h2>
<a href="c_home/logout">Logout</a>
</body>
</html>

And my base_url is::$config['base_url'] = 'http://localhost/codeignator/index.php';

The problem is that when I click on Login button the url looks like "http://localhost/codeignator/index.php/index.php/c_verifylogin".. There is two index.php in url.but it should be one.If there is one index.php then the programme run correctly..what is the problem...??please help me.