Problem with application wide component

Yii 1.1 General Discussion
1

Hi all,

Based on the wiki (this article)) I wrote a simple application wide component:




<?php


class XChangeSingleton extends CApplicationComponent {


    private $_case_id = null;


    public function setCaseID($case_id) {

        $this->_case_id = $case_id;

    }


    public function getCaseID() {

        if (!$this->_case_id) {

            $this->_case_id = 0;

        }

        return $this->_case_id;

    }


}


?>

In main.php I put this code to create an object of that class:




	'components'=>array(

                'xchange'=>array('class'=>'XChangeSingleton'),

                ....

Then I use the following statements to access the component:




Yii::app()->xchange->setCaseId($cur_case_id);

...

 $model->case_id = Yii::app()->xchange->CaseId;

But the call xchange->CaseId in all cases returns 0. If I follow the flow with the debugger it seems that Yii does not recognize that the xchange component exists and thus creates a new one. Your thoughts on this are highly appreciated. Is it a horrible typo or am I missing something? I am using yii-1.1.11.58da45.

DigiFox

2

I checked your code in my localhost.No problem for me.

3

Thanks for the quick response, pity it worked for you :) !

Update: when I set a value for CaseID and retrieve it in the next statement it seems to work. But when I set a value in one action of a controller (Index) and retrieve it in another (Create) it does not work. In that last case a new xchange-object is created.

DigiFox

4

That’s the way PHP works. The lifespan of a PHP object is (at most) one HTTP request. Store your data in the session if you want it to survive the request.

5

Ah, that was stupid. Completely forgot about this, no state. Thanks for taking the time to clear this up, phtamas!