Using session component in custom component - cakephp

Question

I'm trying to use Session component in custom component (CakePHP 2.3) but when I call Session component functions I get: Fatal error: Call to a member function read() on a non-object in ...\app\Controller\Component\CartComponent.php on line 7
My CartComponent looks like that:
<?php
App::uses('Component', 'Controller');
class CartComponent extends Component {
public $components = array('Session');
function hasItems() {
$cart = $this->Session->read('Cart');
return $cart != null && count($cart) > 0;
}
}
?>
And I use it in controller:
<?php
class OrdersController extends AppController {
public $name = 'Orders';
public $components = array('Cart', 'Email');
function beforeFilter() {
parent::beforeFilter();
if ($this->Cart->hasItems()) {
$this->Auth->allow('add_item', 'remove_item', 'cart');
} else {
$this->Auth->allow('add_item', 'remove_item', 'cart', 'make');
}
}
}
?>

Answer 1

For using session inside the custom component I tried with
public $components = array('Session');
and then called it by using
$this->Session->read('Cart');
but I cant able to use it and I start to use
CakeSession::read('Cart')
Now it works Hope it will used for you note I used in cake php version > 2

Answer 2

If you want to use Session in your Component Use-
$test = CakeSession::read('user');
print_r($test);

Answer 3

You should use as bellow
class YourComponent extends Component {
public function initialize(Controller $controller){
$this->controller = $controller;
if (!isset($this->controller->presetVars)) {
$this->controller->presetVars = true;
}
$model = $this->controller->modelClass;
if (!empty($settings['model'])) {
$model = $settings['model'];
}
if ($this->controller->presetVars === true) {
// auto-set the presetVars based on search definitions in model
$this->controller->presetVars = array();
$filterArgs = array();
if (!empty($this->controller->$model->filterArgs)) {
$filterArgs = $this->controller->$model->filterArgs;
}
foreach ($filterArgs as $key => $arg) {
if ($args = $this->_parseFromModel($arg, $key)) {
$this->controller->presetVars[] = $args;
}
}
}
foreach ($this->controller->presetVars as $key => $field) {
if ($field === true) {
if (isset($this->controller->$model->filterArgs[$key])) {
$field = $this->_parseFromModel($this->controller->$model->filterArgs[$key], $key);
} else {
$field = array('type' => 'value');
}
}
if (!isset($field['field'])) {
$field['field'] = $key;
}
$this->controller->presetVars[$key] = $field;
}
/* now you can use Component existing in your Component :) */
public function sayHello(){
$this->controller->Session->setFlash(__('Hello you'));
}
}