title: Django - Some Models are not Editable/Createable in Django-Admin
body: <p>I have 5 models in one of my apps</p>
  
  <p>Report ReportData Customer ..etc</p>
  
  <p>For some reason, ever since my last deployment, I can no longer change or create new <code>Report</code> or <code>Customer</code> objects, but everything else works? Any idea why this would be happening? The admin page just outputs nothing on the <code>add</code> link and the <code>change</code> link outputs nothing as well.</p>
  
  <p>Django==1.9.1</p>
  
  <p>I have tried restarting servers, running migrations, and restarting database. The development version works fine. Such a strange problem.</p>
  
  <p><a href="https://i.stack.imgur.com/P4AlS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/P4AlS.png" alt="enter image description here"></a></p>
  
  <p>As you can see, there are no fields even though this object has been populated with tons of data in the database.  </p>
  
  <p>Here is my Report model:</p>
  
  <pre><code>class Report(models.Model):
      public_uuid = models.UUIDField(max_length=256,default=util.make_uuid,unique=True)
      customer = models.ForeignKey('Customer')
      has_payed = models.BooleanField(default=False)
      #... etc
  </code></pre>
  
  <p>Here is how I register items in the admin:</p>
  
  <pre><code>admin.site.register(Customer)
  admin.site.register(Report)
  admin.site.register(...etc)
  </code></pre>
  
  <p>The other 3 models I have work fine.  The only difference between these two models and the other three (that work and are editable with the admin tool) is that these two models have @property and @staticmethod methods attached to them.</p>