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"""
Tests for F() query expression syntax.
"""
from __future__ import unicode_literals
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
@python_2_unicode_compatible
class Employee(models.Model):
firstname = models.CharField(max_length=50)
lastname = models.CharField(max_length=50)
def __str__(self):
return '%s %s' % (self.firstname, self.lastname)
@python_2_unicode_compatible
class Company(models.Model):
name = models.CharField(max_length=100)
num_employees = models.PositiveIntegerField()
num_chairs = models.PositiveIntegerField()
ceo = models.ForeignKey(
Employee,
related_name='company_ceo_set')
point_of_contact = models.ForeignKey(
Employee,
related_name='company_point_of_contact_set',
null=True)
def __str__(self):
return self.name
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