在CakePHP中多次提交请求后，使变量变为静态？

Question

I tried to declare a static and public variable in AppController as follows

class AppController extends Controller {


public static $var = 0;

}

And then access the static variable in controller of its subclass.

My CTP file has multiple submit buttons which change the value of the static variable.

eg.

button A -> $var ++  
button B -> $var --

I also tried session and started it in beforefilter function of app controller. Still on multiple submission, the session variable is reset again.

class AppController extends Controller {


public function beforeFilter() {
parent::beforeFilter();
$this->Session->write('var', 0);

}
}

In both cases(either static variable or session), the static variable can only be +1, 0 or -1. It seems the AppController is loaded on refresh of page. What I really want is the static variable can be + or - more than 1 after the buttons are pressed multiple times and the static variable is only reset after close of the browser.

Answer 1

For setting the value when you want, by buttons, you should use post method in some controller action not in beforeFilter().

example:

public function foo() {
    if ($this->request->is('post')) {
        // get posted value from $this->request
        $this->Session->write('var', 'value');
    }
}

then you can read the value in any controller like this:

$value = $this->Session->read('var');