title: POST multiple checkbox value tornado
body: <p>I am messing around with a tornado web app with which I need a bit of help.  I have multiple checkboxes with the same name and I would like to POST the values of the selected one.</p>
  
  <pre><code>&lt;input id=DB_BASED_ID name="activity" value=DB_BASED_ID type="checkbox"/&gt;
  &lt;input id=DB_BASED_ID name="activity" value=DB_BASED_ID type="checkbox"/&gt;
  &lt;input id=DB_BASED_ID name="activity" value=DB_BASED_ID type="checkbox"/&gt;
  &lt;input id=DB_BASED_ID name="activity" value=DB_BASED_ID type="checkbox"/&gt;
  </code></pre>
  
  <p>I can get the values of each with javascript pre-POST but am having troubles getting this list on the python (tornado) side.  i only get the highest selected value.</p>
  
  <p>on the python side it looks like:</p>
  
  <p>...</p>
  
  <pre><code>def post(self):
      email = self.get_argument("email")
      activity = self.get_argument("activity")
  </code></pre>