public function postAction()
    {
        $posts = new Application_Model_DbTable_Posts();
        $id = $this->getRequest()->getParam('id');
        $this->view->post = $posts->getById($id);
 
        $categories = new Application_Model_DbTable_Categories();
        $this->view->categories = $categories->fetchAll();
 
        $comments = new Application_Model_DbTable_Comments();
        $this->view->comments = $comments->getByPostId($id);
 
        $form = new Application_Form_Comment($options = null);
        $form->submit->setLabel('Leave a comment');
        $this->view->form = $form;
 
         if($this->getRequest()->isPost())
            {
                $formData = $this->getRequest()->getPost();
                if($form->isValid($formData))
                {
                    $name = $form->getValue('name');
                    $email = $form->getValue('email');
                    $content = $form->getValue('content');
                    $comments->addComment($name, $email, $content, $id);
                    $this->_helper->redirector->gotoUrl('/index/post/id/'.$id);;
                }
 
            }
 
        $this->view->title = $this->view->post->title;
        $this->view->headTitle($this->view->title);
    }