How to set and retrieve session in CodeIgniter 3.0

Hi,

I am using CodeIgniter 3.0

- I have created Login Module
- I have make changes in Config.php as below :

$config['sess_driver'] = 'database';

$config['sess_cookie_name'] = 'ci_session';

$config['sess_expiration'] = 7200;

$config['sess_save_path'] = 'ci_sessions';

$config['sess_match_ip'] = FALSE;

$config['sess_time_to_update'] = 300;

$config['sess_regenerate_destroy'] = FALSE;

- I have Define Session in  autoload.php as below :

$autoload['libraries'] = array('database','Session');

$autoload['drivers'] = array();

$autoload['helper'] = array('url');


- I have set session while Authenticate :

$this->load->library('Session');

$data_session_set = array('id' => $this->details->emp_reg_id, 'username' => $this->details->username, 'emp_role' => $this->details->emp_role, 'isLoggedIn' => 1);

$this->session->set_userdata($data_session_set);


- I am trying to fetch Userdata/Session data using below code :

$this->session->userdata('isLoggedIn');

But, i am getting below error,
A PHP Error was encountered



Severity: Notice

Message: Undefined index: isLoggedIn

please paste full error message

please paste full error message

A PHP Error was encountered

Severity: Notice
Message: Undefined index: isLoggedIn
Filename: dashboard/Main.php
Line Number: 28

Well, what's Line 28? It cannot be $this->session->userdata('isLoggedIn');

Well, what's Line 28? It cannot be $this->session->userdata('isLoggedIn');

yes, it is  on Line 28     $this->session->userdata('isLoggedIn');

I already Worked in CodeIgniter 2.2.0 but had issue in CodeIgniter 3.0

This problem is occur when i am using REST server api with my controller.
Is this problem in REST server ?
Or REST server is use only for pass static information

Refer to the database section of the session documentation and see if you missed anything : http://www.codeigniter.com/user_guide/li...ase-driver
I suspect, you haven't created the ci_sessions table in your database. You can do so by running the following query ( refer above link ) :
CREATE TABLE IF NOT EXISTS `ci_sessions` (
`id` varchar(40) NOT NULL,
`ip_address` varchar(45) NOT NULL,
`timestamp` int(10) unsigned DEFAULT 0 NOT NULL,
`data` blob NOT NULL,
PRIMARY KEY (id),
KEY `ci_sessions_timestamp` (`timestamp`)
);
for mysql.

Alternatively you can use "files" for storing sessions, if this does not work out worst case.

Refer to the database section of the session documentation and see if you missed anything : http://www.codeigniter.com/user_guide/li...ase-driver
I suspect, you haven't created the ci_sessions table in your database. You can do so by running the following query ( refer above link ) :
CREATE TABLE IF NOT EXISTS `ci_sessions` (
       `id` varchar(40) NOT NULL,
       `ip_address` varchar(45) NOT NULL,
       `timestamp` int(10) unsigned DEFAULT 0 NOT NULL,
       `data` blob NOT NULL,
       PRIMARY KEY (id),
       KEY `ci_sessions_timestamp` (`timestamp`)
);
for mysql.

Alternatively you can use "files" for storing sessions, if this does not work out worst case.

Thanks for reply 

I have already mention in my post this problem is occur when i have  used REST API.
Otherwise its working fine with SESSION.
So my question is that How to use session with REST API ?
Can you give me small example of Login module using REST API