1 """

     2 Tests for F() query expression syntax.

     3 """

     4 

     5 from django.db import models

     6 

     7 class Employee(models.Model):

     8     firstname = models.CharField(max_length=50)

     9     lastname = models.CharField(max_length=50)

    10 

    11     def __unicode__(self):

    12         return u'%s %s' % (self.firstname, self.lastname)

    13 

    14 class Company(models.Model):

    15     name = models.CharField(max_length=100)

    16     num_employees = models.PositiveIntegerField()

    17     num_chairs = models.PositiveIntegerField()

    18     ceo = models.ForeignKey(

    19         Employee,

    20         related_name='company_ceo_set')

    21     point_of_contact = models.ForeignKey(

    22         Employee,

    23         related_name='company_point_of_contact_set',

    24         null=True)

    25 

    26     def __unicode__(self):

    27         return self.name