1 # coding: utf-8

     2 from django.db import models

     3 

     4 

     5 class School(models.Model):

     6     name = models.CharField(max_length=100)

     7 

     8 class Parent(models.Model):

     9     name = models.CharField(max_length=100)

    10 

    11 class Child(models.Model):

    12     mother = models.ForeignKey(Parent, related_name='mothers_children')

    13     father = models.ForeignKey(Parent, related_name='fathers_children')

    14     school = models.ForeignKey(School)

    15     name = models.CharField(max_length=100)

    16 

    17 class Poet(models.Model):

    18     name = models.CharField(max_length=100)

    19 

    20     def __unicode__(self):

    21         return self.name

    22 

    23 class Poem(models.Model):

    24     poet = models.ForeignKey(Poet)

    25     name = models.CharField(max_length=100)

    26 

    27     def __unicode__(self):

    28         return self.name