How to validate Session in codeigniter? - php

Question

I am trying to create a session in Codeigniter. I have loaded session and encrypt library in autoload. By default the login.php page opens. I want to open the dashboard.php page, if the user is already logged in. I have written the following code, but it opens the login.php page, even after login.
Kindly tell me how to check if the session is already set or not.
public function index()
{
$data['products_data']= $this->products_model->all_products();
// $this->load->view('login');
$this->form_validation->set_rules('username','Username','required');
$this->form_validation->set_rules('password','Password','required');
if ($this->form_validation->run()== false)
{
$this->load->view('login');
}
else
{
if ($this->session->userdata('login_status')) {
$this->load->view('header');
$this->load->view('dashboard');
$this->load->view('footer');
}
else
{
$username= $this->input->post('username');
$password= $this->input->post('password');
if( $this->products_model->login_model($username,$password))
{
$sess_data= array(
'username'=> $username,
'login_status'=>'1'
);
$session_data = $this->session->set_userdata($sess_data);
$this->load->view('header');
$this->load->view('dashboard');
$this->load->view('footer');
}
}
}
}

Answer 1

$sessdata = $this->session->set_userdata($session_data);
if (isset($sessdata))
{
//session exists
}
else{
// no session value
}
So Your controller should look like below to avoid redirecting to login page on page refresh,
function index() {
if ($this->session->userdata('login_status')) {
//write your code for redirect to dashboard
} else {
$data['products_data'] = $this->products_model->all_products();
$this->form_validation->set_rules('username', 'Username', 'required');
$this->form_validation->set_rules('password', 'Password', 'required');
if ($this->form_validation->run() == false) {
$this->load->view('login');
} else {
$username = $this->input->post('username');
$password = $this->input->post('password');
if ($this->products_model->login_model($username, $password)) {
$sess_data = array(
'username' => $username,
'login_status' => '1'
);
$session_data = $this->session->set_userdata($sess_data);
//write your code for redirect to dashboard
}
}
}
}

Answer 2

Remove the single qoutes on
$this->session->set_userdata('$sess_data');
it is treating the variable $sess_data as a regular string.
must be:
$this->session->set_userdata($sess_data);

Answer 3

I rather like to create another controller for dashboard and redirect it to there after successful login. It is clean and you can do further changes easily
if( $this->products_model->login_model($username,$password))
{
$sess_data= array(
'username'=> $username
);
$session_data = $this->session->set_userdata($sess_data);
if(isset($session_data))
redirect(site_url('/dashboard/'));
}
FM: $sess_data should not be in single quotes

Answer 4

I will use session to record login status.
$session_data= array(
'username'=> $username,
'lgoin_status' => 1
);
$this->session->set_userdata('$session_data');
And I will check session's login_status
if ($this->session->userdata('login_status')) {
// do something
}
Edit
On your code, you should check session at first, so..
public function index()
{
if ($this->session->userdata('login_status'))
{
// do something
}
else
{
$data['products_data']= $this->products_model->all_products();
$this->form_validation->set_rules('username','Username','required');
$this->form_validation->set_rules('password','Password','required');
if ($this->form_validation->run()== false)
{
$this->load->view('login');
}
...
}