title: how to extend Django Meta classes if classes are in different files?
body: <p>the Django docs say:</p>
  
  <pre><code>class CommonInfo(models.Model):
      ...
      class Meta:
          abstract = True
          ordering = ['name']
  
  class Student(CommonInfo):
      ...
      class Meta(CommonInfo.Meta):
          db_table = 'student_info'
  </code></pre>
  
  <p>But how do I handle this if CommonInfo and Student are in different files?  At the moment, my Student file looks like</p>
  
  <pre><code>from CommonInfo import CommonInfo
  class Student(CommonInfo):
      ...
      class Meta(CommonInfo.Meta):
          db_table = 'student_info'
  </code></pre>
  
  <p>But that is throwing 'AttributeError:  Type object "CommonInfo" has no attribute "Meta"'</p>