public function init()
{
// get comment repository
$this->commentRepository = $this->_helper->entity->getRepository('Newscoop\\Entity\\Comment');
// get article repository
$this->articleRepository = $this->_helper->entity->getRepository('Newscoop\\Entity\\Article');
// get language repository
$this->languageRepository = $this->_helper->entity->getRepository('Newscoop\\Entity\\Language');
$this->form = new Admin_Form_Comment();
$this->editForm = new Admin_Form_Comment_EditForm();
return $this;
}