1 """

     2 25. Reverse lookups

     3 

     4 This demonstrates the reverse lookup features of the database API.

     5 """

     6 

     7 from django.db import models

     8 

     9 class User(models.Model):

    10     name = models.CharField(max_length=200)

    11 

    12     def __unicode__(self):

    13         return self.name

    14 

    15 class Poll(models.Model):

    16     question = models.CharField(max_length=200)

    17     creator = models.ForeignKey(User)

    18 

    19     def __unicode__(self):

    20         return self.question

    21 

    22 class Choice(models.Model):

    23     name = models.CharField(max_length=100)

    24     poll = models.ForeignKey(Poll, related_name="poll_choice")

    25     related_poll = models.ForeignKey(Poll, related_name="related_choice")

    26 

    27     def __unicode__(self):

    28         return self.name