Make organization owner admin user by default

Where this function is used by other model classes `is_admin` may be
missing, so a conditional check is necessary first.

Closes bennylopegh-97

organizations/utils.py

@@ -55,7 +55,10 @@ def create_organization(user, name, slug=None, is_active=None,
     if org_defaults is None:
         org_defaults = {}
     if org_user_defaults is None:
-        org_user_defaults = {}
+        if 'is_admin' in org_user_model._meta.get_all_field_names():
+            org_user_defaults = {'is_admin': True}
+        else:
+            org_user_defaults = {}
 
     if slug is not None:
         org_defaults.update({'slug': slug})

tests/test_utils.py

@@ -21,6 +21,7 @@ def test_create_organization(self):
         acme = create_organization(self.user, "Acme", org_defaults={"slug": "acme-slug"})
         self.assertTrue(isinstance(acme, Organization))
         self.assertEqual(self.user, acme.owner.organization_user.user)
+        self.assertTrue(acme.owner.organization_user.is_admin)
 
     def test_create_custom_org(self):
         custom = create_organization(self.user, "Custom", model=Account)