[fw-general] error template not rendered when exception is raised

[Guillaume ORIOL]

Hi,

I am wondering why my error template is not rendered when an exception
is thrown in my authorization plugin.
Let me explain the context.
1) my bootstrap registers a plugin for authorization:
...
$frontController = Zend_Controller_Front::getInstance();
$frontController->setControllerDirectory(WEBAPP_CONTROLLER_DIR);

$view = new Zend_View($config->view->toArray());
$viewRenderer =
Zend_Controller_Action_HelperBroker::getStaticHelper('ViewRenderer');
$viewRenderer->setView($view)
             ->setViewBasePathSpec(WEBAPP_VIEW_DIR);

$auth = Zend_Auth::getInstance();
$acl = new Permission();
$frontController->registerPlugin(new
Technema_Plugin_Authorization($auth, $acl));

2) my plugin throws an exception when user is not allowed to

    public function preDispatch(Zend_Controller_Request_Abstract $request)
    {
        if ($this->_auth->hasIdentity()) {
            $role = $this->_auth->getIdentity()->role;
        } else {
            $role = $this->_config->acl->guest;
        }

        $module = $request->module;
        $controller = $request->controller;
        $action = $request->action;

        $resource = $controller;
        if (!$this->_acl->has($resource)) {
            $resource = null;
        }

        if (!$this->_acl->isAllowed($role, $resource, $action)) {
            if ($this->_auth->hasIdentity()) {
                throw new Zend_Acl_Exception($resource . '/' . $action);
       ...

3) by default, the front controller registers an error handler that
triggers the ErrorController

class ErrorController extends Zend_Controller_Action
{
    public function errorAction()
    {
        $this->getResponse()->clearBody();

        $error = $this->_getParam('error_handler');
        switch ($error->type) {
            case
Zend_Controller_Plugin_ErrorHandler::EXCEPTION_NO_CONTROLLER:
            case Zend_Controller_Plugin_ErrorHandler::EXCEPTION_NO_ACTION:
                // 404 error: controller or action not found
                $this->getResponse()->setHttpResponseCode(404);
                $this->view->message = 'Page not found';
                break;

            default:
                switch (get_class($error->exception)) {
                    case 'Zend_Acl_Exception' :
                        $this->getResponse()->setHttpResponseCode(200);
                        $this->view->message = 'Access denied to page '
. $error->exception->getMessage();
                        Zend_Registry::get(REG_LOG)->debug('Access
denied to ' . $error->exception->getMessage());
                        break;
...

When I try to access a resource I am not allowed to, I am sure the
ErrorController is triggered because I find an "Access denied..." in my
log. But I get a plain text error message instead of my custom error
page (views/scripts/error/error.phtml)

Where am I wrong?
-- 

Guillaume ORIOL
[EMAIL PROTECTED]