1 """

     2 Regression tests for a few ForeignKey bugs.

     3 """

     4 

     5 from django.db import models

     6 

     7 # If ticket #1578 ever slips back in, these models will not be able to be

     8 # created (the field names being lower-cased versions of their opposite

     9 # classes is important here).

    10 

    11 class First(models.Model):

    12     second = models.IntegerField()

    13 

    14 class Second(models.Model):

    15     first = models.ForeignKey(First, related_name = 'the_first')

    16 

    17 # Protect against repetition of #1839, #2415 and #2536.

    18 class Third(models.Model):

    19     name = models.CharField(max_length=20)

    20     third = models.ForeignKey('self', null=True, related_name='child_set')

    21 

    22 class Parent(models.Model):

    23     name = models.CharField(max_length=20)

    24     bestchild = models.ForeignKey('Child', null=True, related_name='favored_by')

    25 

    26 class Child(models.Model):

    27     name = models.CharField(max_length=20)

    28     parent = models.ForeignKey(Parent)

    29 

    30 

    31 # Multiple paths to the same model (#7110, #7125)

    32 class Category(models.Model):

    33     name = models.CharField(max_length=20)

    34 

    35     def __unicode__(self):

    36         return self.name

    37 

    38 class Record(models.Model):

    39     category = models.ForeignKey(Category)

    40 

    41 class Relation(models.Model):

    42     left = models.ForeignKey(Record, related_name='left_set')

    43     right = models.ForeignKey(Record, related_name='right_set')

    44 

    45     def __unicode__(self):

    46         return u"%s - %s" % (self.left.category.name, self.right.category.name)