/**
  * Post a comment action
  */
 public function postAction()
 {
     if ($this->isEnabledForStore()) {
         $challenge = $this->getRequest()->getPost('recaptcha_challenge_field');
         $field = $this->getRequest()->getPost('recaptcha_response_field');
         if ($post = $this->getPost()) {
             $data = new Varien_Object($this->getRequest()->getPost());
             try {
                 Mage::getSingleton('wordpress/session')->setPostCommentData($post, $data->getAuthor(), $data->getEmail(), $data->getUrl(), $data->getComment());
                 if (Mage::helper('wordpress/recaptcha')->isEnabled()) {
                     if (!Mage::helper('wordpress/recaptcha')->isValidValue($challenge, $field, true)) {
                         throw new Exception($this->getCaptchaErrorMessage());
                     }
                 }
                 $comment = $post->postComment($data->getAuthor(), $data->getEmail(), $data->getUrl(), $data->getComment(), $data->getExtra());
                 if (!$comment) {
                     throw new Exception($this->getCommentErrorMessage());
                 }
                 Mage::getSingleton('wordpress/session')->removePostCommentData($post);
                 Mage::getSingleton('core/session')->addSuccess($this->__($this->getCommentSuccessMessage()));
             } catch (Exception $e) {
                 Mage::getSingleton('core/session')->addError($this->__($e->getMessage()));
             }
             $this->_redirectUrl($post->getPermalink());
         } else {
             $this->_forward('noRoute');
         }
     } else {
         $this->_forward('noRoute');
     }
 }