title: Django: store common fields in a parent model
body: <p>I've got some models:</p>
  
  <pre class="lang-python prettyprint-override"><code>class Place(models.Model):
      name = models.CharField(unique=True)
  
  class Bar(Place):
      drinks = models.ManyToManyField('Drink')
  
  class Restaurant(Place):
      meals = models.ManyToManyField('Meals')
  </code></pre>
  
  <p>That's a multi-table inherited structure where each bar serves drinks only, and each restaurant serves meals only. I, though, need a name of each place to be unique across all the places - hence the parent <code>Place</code> model.</p>
  
  <p>Now, multi-table inheritance presumes a parent and a child are separate entities. That means when I want to create a new <code>Bar</code>, I should go like this:</p>
  
  <pre><code>&gt;&gt; parent = Place(name='Myplace')
  &gt;&gt; parent.save()
  &gt;&gt; child = Bar(place=parent, drinks=mydrinklist)
  &gt;&gt; child.save()
  </code></pre>
  
  <p>But in my case, <code>Place</code> is not a separate entity: it should not exists by itself. It's just a shared storage with some restrictions. I'd like to have something like this:</p>
  
  <pre><code>&gt;&gt; child = Bar(name='Myplace', drinks=mydrinklist)
  &gt;&gt; child.save()
  </code></pre>
  
  <p>Where <code>name</code> attribute is automatically passed to the underlying parent model and a <code>Place</code> model is silently created when <code>save()</code> is called. SQLAlchemy can do that via its multi-table inheritance. Is there a way to achieve the same in Django?</p>