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django/tests/modeltests/many_to_one_null/models.py
Aymeric Augustin d4a0b27838 [py3] Refactored __unicode__ to __str__.
* Renamed the __unicode__ methods
* Applied the python_2_unicode_compatible decorator
* Removed the StrAndUnicode mix-in that is superseded by
  python_2_unicode_compatible
* Kept the __unicode__ methods in classes that specifically
  test it under Python 2
2012-08-12 14:44:40 +02:00

29 lines
678 B
Python

"""
16. Many-to-one relationships that can be null
To define a many-to-one relationship that can have a null foreign key, use
``ForeignKey()`` with ``null=True`` .
"""
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
@python_2_unicode_compatible
class Reporter(models.Model):
name = models.CharField(max_length=30)
def __str__(self):
return self.name
@python_2_unicode_compatible
class Article(models.Model):
headline = models.CharField(max_length=100)
reporter = models.ForeignKey(Reporter, null=True)
class Meta:
ordering = ('headline',)
def __str__(self):
return self.headline