1 from django.db import models

     2 

     3 class Square(models.Model):

     4     root = models.IntegerField()

     5     square = models.PositiveIntegerField()

     6 

     7     def __unicode__(self):

     8         return "%s ** 2 == %s" % (self.root, self.square)

     9 

    10 class Person(models.Model):

    11     first_name = models.CharField(max_length=20)

    12     last_name = models.CharField(max_length=20)

    13 

    14     def __unicode__(self):

    15         return u'%s %s' % (self.first_name, self.last_name)

    16 

    17 class SchoolClass(models.Model):

    18     year = models.PositiveIntegerField()

    19     day = models.CharField(max_length=9, blank=True)

    20     last_updated = models.DateTimeField()

    21 

    22 

    23 class Reporter(models.Model):

    24     first_name = models.CharField(max_length=30)

    25     last_name = models.CharField(max_length=30)

    26 

    27     def __unicode__(self):

    28         return u"%s %s" % (self.first_name, self.last_name)

    29 

    30 

    31 class Article(models.Model):

    32     headline = models.CharField(max_length=100)

    33     pub_date = models.DateField()

    34     reporter = models.ForeignKey(Reporter)

    35 

    36     def __unicode__(self):

    37         return self.headline