Update tests for django 2.0

test_project/generic/models.py

@@ -18,10 +18,23 @@ def __str__(self):
 @six.python_2_unicode_compatible
 class ModelB(models.Model):
     name = models.CharField(max_length=64)
-    a = models.ForeignKey(ModelA, blank=True, null=True, related_name='rel_b')
-    content_type = models.ForeignKey(ContentType, related_name='+')
+    a = models.ForeignKey(
+        ModelA,
+        blank=True,
+        null=True,
+        related_name='rel_b',
+        on_delete=models.CASCADE,
+    )
+    content_type = models.ForeignKey(
+        ContentType,
+        related_name='+',
+        on_delete=models.CASCADE,
+    )
     object_id = models.PositiveIntegerField()
-    content_object = GenericForeignKey('content_type', 'object_id')
+    content_object = GenericForeignKey(
+        'content_type',
+        'object_id',
+    )
 
     def __str__(self):
         return self.name

test_project/many_to_many/models.py

@@ -13,7 +13,7 @@ def __str__(self):
         return self.title
 
     class Meta:
-        ordering = ('title',)
+        ordering = ('title', )
 
 
 @six.python_2_unicode_compatible
@@ -25,4 +25,4 @@ def __str__(self):
         return self.headline
 
     class Meta:
-        ordering = ('headline',)
+        ordering = ('headline', )

test_project/many_to_one/models.py

@@ -19,10 +19,14 @@ def __str__(self):
 class Article(models.Model):
     headline = models.CharField(max_length=100)
     pub_date = models.DateField()
-    reporter = models.ForeignKey(Reporter, related_name='articles')
+    reporter = models.ForeignKey(
+        Reporter,
+        related_name='articles',
+        on_delete=models.CASCADE,
+    )
 
     def __str__(self):
         return self.headline
 
     class Meta:
-        ordering = ('headline',)
+        ordering = ('headline', )

test_project/one_to_one/models.py

@@ -16,7 +16,11 @@ def __str__(self):
 
 @six.python_2_unicode_compatible
 class Restaurant(models.Model):
-    place = models.OneToOneField(Place, primary_key=True)
+    place = models.OneToOneField(
+        Place,
+        primary_key=True,
+        on_delete=models.CASCADE,
+    )
     serves_hot_dogs = models.BooleanField(default=False)
     serves_pizza = models.BooleanField(default=False)
 
@@ -26,7 +30,10 @@ def __str__(self):
 
 @six.python_2_unicode_compatible
 class Waiter(models.Model):
-    restaurant = models.ForeignKey(Restaurant)
+    restaurant = models.ForeignKey(
+        Restaurant,
+        on_delete=models.CASCADE,
+    )
     name = models.CharField(max_length=50)
 
     def __str__(self):

tox.ini

@@ -1,10 +1,11 @@
 [tox]
 envlist =
-    {py27,py36,pypy}-django{18,11}
+    {py36}-django{20}, {py27,py36,pypy}-django{18,11}
     # 1.9 breaks pypy3 hence only testing with 18
     # scandir fails to install in pypy3 so skippint for now
     # {pypy3}-django{18}
 
+
 [testenv]
 basepython =
     py27: python2.7
@@ -18,6 +19,7 @@ commands =
     pip freeze
     make check
 deps =
+    django20: django==2.0
     django18: django<1.9
     django11: django<2
 whitelist_externals =

url_filter/filtersets/django.py

@@ -12,17 +12,13 @@
 from ..utils import SubClassDict
 from .base import BaseModelFilterSet, ModelFilterSetOptions
 
-
 __all__ = ['ModelFilterSet', 'DjangoModelFilterSetOptions']
 
-
 GenericForeignKey = None
 
-
 if 'django.contrib.contenttypes' in settings.INSTALLED_APPS:
     from django.contrib.contenttypes.fields import GenericForeignKey
 
-
 MODEL_FIELD_OVERWRITES = SubClassDict({
     models.AutoField: forms.IntegerField(min_value=0),
     models.FileField: lambda m: forms.CharField(max_length=m.max_length),
@@ -39,9 +35,12 @@ class DjangoModelFilterSetOptions(ModelFilterSetOptions):
         Flag specifying whether reverse relationships should
         be allowed while creating filter sets for children models.
     """
+
     def __init__(self, options=None):
         super(DjangoModelFilterSetOptions, self).__init__(options)
-        self.allow_related_reverse = getattr(options, 'allow_related_reverse', True)
+        self.allow_related_reverse = getattr(
+            options, 'allow_related_reverse', True
+        )
 
 
 class ModelFilterSet(BaseModelFilterSet):
@@ -60,10 +59,12 @@ def _get_model_field_names(self):
         This is used when ``Meta.fields`` is ``None``
         in which case this method returns all model fields.
         """
-        return list(map(
-            operator.attrgetter('name'),
-            self.Meta.model._meta.get_fields()
-        ))
+        return list(
+            map(
+                operator.attrgetter('name'),
+                self.Meta.model._meta.get_fields(),
+            )
+        )
 
     def _get_form_field_for_field(self, field):
         """
@@ -122,17 +123,22 @@ def _build_filterset_from_related_field(self, field):
         Build a :class:`.FilterSet` for a Django relation model field
         such as ``ForeignKey``.
         """
-        return self._build_django_filterset(field, {
-            'exclude': [field.rel.name],
-        })
+        try:
+            name = field.remote_field.name
+        except AttributeError:
+            # django version < 1.9
+            name = field.rel.name
+        return self._build_django_filterset(field, {'exclude': [name]})
 
     def _build_filterset_from_reverse_field(self, field):
         """
         Build a :class:`.FilterSet` for a Django reverse relation model field.
         """
-        return self._build_django_filterset(field, {
-            'exclude': [field.field.name],
-        })
+        return self._build_django_filterset(
+            field, {
+                'exclude': [field.field.name],
+            }
+        )
 
     def _build_django_filterset(self, field, meta_attrs):
         m = field.related_model