title: How to pass the dynamic column name in django ORM values
body: <p>I have  <code>data = request.POST</code> (i.e <strong><code>&lt;QueryDict: {u'device': [u'Camera '], u'todate': [u'2018-05-18'], u'fromdate': [u'2018-04-19']}&gt;</code></strong> ) and 
  <strong><code>device = data.get('device', None)</code></strong> which is a column name in database table and a user selected value(which change based on user selection)</p>
  
  <p>Monitor.objects.values(device) </p>
  
  <p>Now I got the error like <strong><code>Cannot resolve keyword u'Camera ' into field. Choices are: Camera</code></strong></p>
  
  <p><strong><code>how can I convert column name stored in, device variable into a actual column</code></strong></p>