I want to upload image in my database. I want to upload that image with some form element. but i don't know how can i do that. my Controller is there.
public function createAction() {
    if ($this->request->isPost()) { 
        $blog = new Blogs();
        $blog->assign(array(
            'title' => $this->request->getPost('title', 'striptags'),
            'description' => $this->request->getPost('description'), 
            //here i want to add upload image...
        ));
        //get current user name
        $blog->name = $this->getName();
        //var_dump($blog);exit;
        if (!$blog->save()) {
            $this->flash->error($blog->getMessages());
        } else {
            $this->flash->success("Blogs was created successfully");
            Tag::resetInput();
        }
    }
    $this->view->form = new BlogsForm(null);
}