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NG Session
Code Igniter bundles a session class, working with cookies and limited database support in version 1.6. Unfortunately, this class stores session userdata directly inside the cookie, even using the database.
[h2]Overview[/h2]
- Based on a combination of Codeignitors Session.php in version 1.6 and DBSession.
- Fully compatible with Codeignitors Session.php in version 1.54 and 1.6 and DBSession.
- Designed as drop-in replacement for CI Session and/or DBSession.
- Any config option like encryption and any functionallity like flash session variables are fully supported.
- When using a database, only the session_id is stored in a cookie. Any other data is stored in the database.
- When using without a database, all data is stored in a cookie.
- Both modi work fully tansparent.
[h2]Download[/h2] File:NGSession.zip
[h2]Required database structure[/h2]
Example Mysql:
[code]
CREATE TABLE ci_sessions (
session_id varchar(40) NOT NULL default '0',
ip_address varchar(16) NOT NULL default '0',
user_agent varchar(50) NOT NULL,
last_activity int(10) unsigned NOT NULL default '0',
session_data text,
PRIMARY KEY (session_id)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
[/code]
Note:
- The table is similar to the orginal CI session table definition, execpt that it adds a field session_data to keep userdata and flash variables.
- When using DBSession, the table is pretty much the same. So NGSession will not require any additional database config.
- UTF8 is not necessary but recommanded.
- Of cause, the database library must be loaded.
Example controller: [code] class Main extends Controller {
function Main()
{
parent::Controller();
$this->load->library('view');
// this starts a session if none exists
$this->load->library('session');
}
[/code] Now the session data can be set/get like: [code] // setter $this->session->set_userdata('user_id', $user_id); // getter if (!$this->session->userdata('user_id')) {} [/code]
[code] set_userdata($newdata = array(), $newval = '') unset_userdata($newdata = array()) all_userdata()set_flashdata($newdata = array(), $newval = '') keep_flashdata($key) flashdata($key) [/code] See the codeignitor documentation for more details.
Assumption: $this->table_user: tablename of table that holds the user / user_id's $this->field_user_id: name of the field that holds the user_id Note: Uses CI 1.6 activerecord syntax and PHP5 syntax [code]/**
* Validate login using credentials (typically email/password or username/password)
* On succuess it sets the user_id field in the session userdata and returns the user object
*
* @access public
* @param associative array example ('email'=>$email, 'password'=>dohash($password))
* @return mixed boolean:false or object with user record
*/
function login($where = array())
{
$query = $this->db->get_where($this->table_user, $where, 1, 0);
if ($query->num_rows != 1) return FALSE;
$row = $query->row();
$this->session->set_userdata('user_id', $row->{$this->field_user_id});
return $row;
}
/**
* Get user information of current logged in user or a specific user by id
*
* @access public
* @param int user_id, default = current session user_id
* @return mixed boolean:false or object with user record
*/
function get_user($id = FALSE)
{
if ($id === FALSE)
{
if (($id = $this->session->userdata('user_id')) === FALSE)
{
return FALSE;
}
}
$where = array(($this->table_user .'.' .$this->field_user_id) =>$id);
$query = $this->db->get_where($this->table_user, $where, 1, 0);
return ($query->num_rows() == 1) ? $query->row() : FALSE;
}
/**
* Logout current user
*
* No parameter. Logout is done by destroying the current user session.
*
* @access public
* @return void
*/
function logout()
{
$this->session->sess_destroy();
}
}
[/code]
Pls visit the [url=http://codeigniter.com/forums/viewthread/70541/]codeignitor forum [/url]