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copied!<p>Since it's an attribute of the class, your queryset is getting <a href="https://docs.djangoproject.com/en/dev/topics/db/queries/#caching-and-querysets" rel="nofollow">evaluated and cached</a> when the class is loaded, i.e. when you start the dev server.</p> <p>I'd try pulling a list of primary keys, <a href="https://docs.djangoproject.com/en/dev/ref/models/querysets/#values-list" rel="nofollow">using <code>values_list()</code></a> — the <code>flat=True</code> example does exactly what you need. <a href="https://docs.djangoproject.com/en/dev/topics/cache/" rel="nofollow">Ideally cache that</a>. Pick a primary key at random and then use that to <code>get()</code> the actual object when you need it.</p> <p>So, how would that go? </p> <p>I'd define a method on the view. If you forget the caching, the implementation might go like this:</p> <pre><code># Lets use this... from random import choice def random_MyModel(self): """Method of RandomObject to pick random MyModel""" pks = MyModel.objects.values_list('pk', flat=True).order_by('id') random_pk = choice(pks) return MyModel.objects.get(pk=random_pk) </code></pre> <p>You might then want to cache the first look up here. The caching docs linked above explain how to do that. If you do cache the result look into the <a href="https://docs.djangoproject.com/en/1.0/ref/signals/#module-django.db.models.signals" rel="nofollow"><code>db.models</code> signals</a> to know when to invalidate — I guess you'd <code>post_save</code>, checking the <code>created</code> flag, and <code>post_delete</code>. </p> <p>I hope that helps.</p>

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