[1.2.X] Fixed #3055 -- Validate that models target of a GenericRelation have a GenericForeignKey field.

Thanks jason for diagnosing the problem and Marcos Moyano for the patch.

Backport of [14563] from trunk

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14565 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/modeltests/invalid_models/models.py b/tests/modeltests/invalid_models/models.py
index ef3edd8563..09301ed935 100644
--- a/tests/modeltests/invalid_models/models.py
+++ b/tests/modeltests/invalid_models/models.py
@@ -4,6 +4,7 @@
 This example exists purely to point out errors in models.
 """
 
+from django.contrib.contenttypes import generic
 from django.db import models
 
 class FieldErrors(models.Model):
@@ -210,6 +211,21 @@ class NonExistingOrderingWithSingleUnderscore(models.Model):
     class Meta:
         ordering = ("does_not_exist",)
 
+class Tag(models.Model):
+   name = models.CharField("name", max_length=20)
+
+class TaggedObject(models.Model):
+   object_id = models.PositiveIntegerField("Object ID")
+   tag = models.ForeignKey(Tag)
+   content_object = generic.GenericForeignKey()
+
+class UserTaggedObject(models.Model):
+   object_tag = models.ForeignKey(TaggedObject)
+
+class ArticleAttachment(models.Model):
+   tags = generic.GenericRelation(TaggedObject)
+   user_tags = generic.GenericRelation(UserTaggedObject)
+
 model_errors = """invalid_models.fielderrors: "charfield": CharFields require a "max_length" attribute that is a positive integer.
 invalid_models.fielderrors: "charfield2": CharFields require a "max_length" attribute that is a positive integer.
 invalid_models.fielderrors: "charfield3": CharFields require a "max_length" attribute that is a positive integer.
@@ -315,4 +331,5 @@ invalid_models.uniquem2m: ManyToManyFields cannot be unique.  Remove the unique
 invalid_models.nonuniquefktarget1: Field 'bad' under model 'FKTarget' must have a unique=True constraint.
 invalid_models.nonuniquefktarget2: Field 'bad' under model 'FKTarget' must have a unique=True constraint.
 invalid_models.nonexistingorderingwithsingleunderscore: "ordering" refers to "does_not_exist", a field that doesn't exist.
+invalid_models.articleattachment: Model 'UserTaggedObject' must have a GenericForeignKey in order to create a GenericRelation that points to it.
 """