title: Ruby on Rails : upload file to server
body: <p>I'm using Android device to upload file to server by using POST method. But I don't know how to make Rails handle this event. It means, after Android device sends file to server by method POST by the link : <code>http://localhost/upload_file</code>, rails server can handle this event, and put this file into database, for example.</p>
  
  <p>I have google and some results that tell me use additional plugin. Does exist any pure method just use rails only ? Please tell me.</p>
  
  <p>Thanks :)</p>