Re: [fw-general] How to set a session variable and return exactly to caller action

[Xavier Vidal Piera]

True, this is the "callbacks queue" version.

I've attached you the class i'm using now.

An example could be this one:

In your controller, maybe you want to retrieve a saved URI (a filtered view
of the customers list: http://www.example.com/customers/list/search/tr

$uri = Custom_Classes_CallbackHelper::get('default', 'customers','list',
'customers/list');

Note: the last parameter is the default uri in case the saved uri has been
deleted from the stack in any previous moment.

----

NOTE:
In the boostrap i've this piece of code too:
(Let the bootstrap save the last callbacks automatically for you)

 try {
            Zend_Controller_Front::run($controllers);

            if($control->isLogged()) {
                // the user is logged, we save the request into the
callback's stack
                // NOTE: the viewless controllers does not save his callback
because the response is redirected before we'll
                // get at this point, so we can save memory and cpu time
omitting the controllers callback (i.e. user update form processing)
            $request = $zcf->getRequest();
            Custom_Classes_CallbackHelper::save($request->getModuleName(),
$request->getControllerName(), $request->getActionName());
            }
        }
        catch (Exception $e) {
            echo $e->getMessage();
        }



2007/9/5, Mauro Casula <[EMAIL PROTECTED]>:
>
>
> Have you a pice of code doing that?
> --
> View this message in context:
> http://www.nabble.com/How-to-set-a-session-variable-and-return-exactly-to-caller-action-tf4382330s16154.html#a12493276
> Sent from the Zend Framework mailing list archive at Nabble.com.
>
>


-- 
Xavier Vidal Piera
Enginyer Tècnic Informàtic de Gestió
Tècnic Especialista Informàtic d'equips
[EMAIL PROTECTED]
http://web.xaviervidal.net
610.68.41.78

<?php

class Custom_Classes_CallbackHelper
{
    const MAX_URL_NUMBER = 20;    

    public static function save($module, $controller, $action, $url = null)
    {
        $session = new Zend_Session_Namespace();
	
        // set default module?
        $module = (is_null($module)) ? 'default' : $module;
	
        // set server url?
        $url = (is_null($url)) ? $_SERVER['REQUEST_URI'] : $url;
	
        // get the callbacks
        $callbacks = (!isset($session->callbacks)) ? array() : $session->callbacks;
	
        // save the callback count
        $callbacksCount = count($callbacks);
	
        // search if the callback exists
        $found = false;

        for($i = 0; $i < $callbacksCount; $i++) {
            if($callbacks[$i]['tag'] == "$module-$controller-$action") {
                $callbacks[$i]['url'] = $url;
                $found = true;
                break;
            }
        }

        if(!$found) {
            // didn't exists, so save the passed url
	       $callbacks[$callbacksCount]['tag'] = "$module-$controller-$action";	
	       $callbacks[$callbacksCount]['url'] = $url;
	   }
	
        // let's take a look if we reach the array limit
        if(($callbacksCount + 1) > self::MAX_URL_NUMBER) {
    	    // we can throw the first element of the stack
            array_shift($callbacks);
        }
	
        // store the callbacks in the session
        $session->callbacks = $callbacks;
    }

    public static function get($module, $controller, $action, $defaultIfNotFound)
    {
        $session = new Zend_Session_Namespace();
	
        $module = (is_null($module)) ? 'default' : $module;

        // there's no info in the session, so return the default callback
        if(!isset($session->callbacks)) {
            return Zend_Registry::get('application.baseurl') . $defaultIfNotFound;
        } 
	
        // let's search through the callbacks, searching for the special tag
        $callbacks = $session->callbacks;
	
        foreach($callbacks as $callback) {
            if($callback['tag'] == "$module-$controller-$action") {
                // found!, so return the URL
                return $callback['url'];
            }
        }	
	
        // oops, there's no tag for the request, so return the default URL
        return Zend_Registry::get('application.baseurl') . $defaultIfNotFound;
    }
}