Fixed #3871 -- Custom managers when traversing reverse relations.

tests/custom_managers/models.py

@@ -11,6 +11,7 @@ returns.
 
 from __future__ import unicode_literals
 
+from django.contrib.contenttypes import generic
 from django.db import models
 from django.utils.encoding import python_2_unicode_compatible
 
@@ -63,12 +64,28 @@ class BaseCustomManager(models.Manager):
 
 CustomManager = BaseCustomManager.from_queryset(CustomQuerySet)
 
+class FunPeopleManager(models.Manager):
+    def get_queryset(self):
+        return super(FunPeopleManager, self).get_queryset().filter(fun=True)
+
+class BoringPeopleManager(models.Manager):
+    def get_queryset(self):
+        return super(BoringPeopleManager, self).get_queryset().filter(fun=False)
+
 @python_2_unicode_compatible
 class Person(models.Model):
     first_name = models.CharField(max_length=30)
     last_name = models.CharField(max_length=30)
     fun = models.BooleanField(default=False)
+
+    favorite_book = models.ForeignKey('Book', null=True, related_name='favorite_books')
+    favorite_thing_type = models.ForeignKey('contenttypes.ContentType', null=True)
+    favorite_thing_id = models.IntegerField(null=True)
+    favorite_thing = generic.GenericForeignKey('favorite_thing_type', 'favorite_thing_id')
+
     objects = PersonManager()
+    fun_people = FunPeopleManager()
+    boring_people = BoringPeopleManager()
 
     custom_queryset_default_manager = CustomQuerySet.as_manager()
     custom_queryset_custom_manager = CustomManager('hello')
@@ -84,6 +101,9 @@ class Book(models.Model):
     published_objects = PublishedBookManager()
     authors = models.ManyToManyField(Person, related_name='books')
 
+    favorite_things = generic.GenericRelation(Person,
+        content_type_field='favorite_thing_type', object_id_field='favorite_thing_id')
+
     def __str__(self):
         return self.title