acl: add get_objects_with_group_level

circle/acl/models.py

@@ -201,5 +201,17 @@ class AclBase(Model):
             clsfilter |= Q(owner=user)
         return cls.objects.filter(clsfilter)
 
+    @classmethod
+    def get_objects_with_group_level(cls, level, group):
+        if isinstance(level, basestring):
+            level = cls.get_level_object(level)
+        ct = ContentType.objects.get_for_model(cls)
+        levelfilter = Q(groups=group)
+        ols = ObjectLevel.objects.filter(
+            levelfilter,
+            content_type=ct, level__weight__gte=level.weight).distinct()
+        clsfilter = Q(object_level_set__in=ols.all())
+        return cls.objects.filter(clsfilter)
+
     class Meta:
         abstract = True

circle/acl/tests/models.py

-from django.db.models import TextField
+from django.db.models import TextField, ForeignKey
+from django.contrib.auth.models import User
 
 from ..models import AclBase
 
@@ -15,6 +16,7 @@ class TestModel(AclBase):
 
 class Test2Model(AclBase):
     normal2_field = TextField()
+    owner = ForeignKey(User)
 
     ACL_LEVELS = (
         ('one', 'One'),

circle/acl/tests/test_acl.py

@@ -14,6 +14,8 @@ class AclUserTest(TestCase):
         self.g1.user_set.add(self.u1)
         self.g1.user_set.add(self.u2)
         self.g1.save()
+        self.g2 = Group.objects.create(name='group2')
+        self.g2.save()
 
     def test_level_exists(self):
         for codename, name in TestModel.ACL_LEVELS:
@@ -147,3 +149,14 @@ class AclUserTest(TestCase):
         self.assertTrue(i.has_level(self.u1, 'alfa'))
         i.set_level(self.g1, None)
         self.assertFalse(i.has_level(self.u1, 'alfa'))
+
+    def test_get_objects_with_group_level(self):
+        i1 = TestModel.objects.create(normal_field='Hello1')
+        i2 = TestModel.objects.create(normal_field='Hello2')
+        i1.set_level(self.g1, 'alfa')
+        i2.set_level(self.g1, 'bravo')
+        i2.set_level(self.g2, 'bravo')
+        self.assertItemsEqual(
+            TestModel.get_objects_with_group_level('alfa', self.g1), [i1, i2])
+        self.assertItemsEqual(
+            TestModel.get_objects_with_group_level('alfa', self.g2), [i2])