Zend Framework: How to redirect to original url after login? - zend-framework

Question

I'm trying to implement a login system that will be smart enough to redirect a user back to the page they were on before they decided (or were forced to) go to the login page.
I know this seems like a similar question to this one, and this one, but they do not address both of my scenarios.
There are two scenarios here:
User specifically decides to go to login page:
<a href="<?php echo $this->url(array(
'controller'=>'auth',
'action'=>'login'), 'default', true); ?>">Log In</a>
User is redirected because they tried to access protected content:
if (!Zend_Auth::getInstance()->hasIdentity()) {
$this->_helper->redirector('login', 'auth');
}
How can I implement a solution for this without displaying the "redirect to" url in the address bar?

Answer 1

Save the destination URL in the session. I guess you have some kind of access pre-dispatch plug-in. Do it there. And then, in the login form handler, check for the destination URL in the session, and redirect to it after a successful authentication.
Sample code from my project:
class Your_Application_Plugin_Access extends Zend_Controller_Plugin_Abstract {
public function preDispatch(Zend_Controller_Request_Abstract $request) {
foreach (self::current_roles() as $role) {
if (
Zend_Registry::get('bootstrap')->siteacl->is_allowed(
$role,
new Site_Action_UriPath($request->getPathInfo())
)
) return; // Allowed
}
$this->not_allowed($request);
}
private function not_allowed(Zend_Controller_Request_Abstract $request) {
$destination_url = $request->getPathInfo();
// If the user is authenticted, but the page is denied for his role, show 403
// else,
// save $destination_url to session
// redirect to login page, with $destination_url saved:
$request
->setPathInfo('/login')
->setModuleName('default')
->setControllerName('login')
->setActionName('index')
->setDispatched(false);
}
...
}
Here, current_roles() always contains 'guest', which is unauthenticated user, for which Zend_Auth::hasIdentity() is false.