title: How to automatically delete records from database after a specific time in Django
body: <p>I have a model named 'Complaint' with numerous entries and I want to delete the entry if it is in database for more than 3 days. How can I do that is there any query for specifying the time. I'm also storing the time at which the entry was stored. This is my models.py file.</p>
  
  <pre><code>complaint_for = models.CharField(max_length=25, choices=COMPLAINT_CHOICES, default='Misbehave')
  name = models.CharField(max_length=50)
  created = models.DateTimeField(auto_now_add=True)
  </code></pre>