Support several required fields during User creation

CHANGES

@@ -19,6 +19,10 @@ Thanks to plumdog
 
 Thanks to plumdog
 
+UNRELEASED
+----------
+- Allowed creating Users with multiple required fields.
+
 0.17.1 (2018-07-16)
 ----------
 - A 403 (permission denied) is now raised if a SAMLResponse is replayed, instead of 500.

djangosaml2/backends.py

@@ -147,19 +147,21 @@ def _get_or_create_saml2_user(self, main_attribute, attributes, attribute_mappin
                      main_attribute)
         django_user_main_attribute = self.get_django_user_main_attribute()
         user_query_args = self.get_user_query_args(main_attribute)
-        user_create_defaults = {django_user_main_attribute: main_attribute}
 
         User = get_saml_user_model()
+        built = False
         try:
-            user, created = User.objects.get_or_create(
-                defaults=user_create_defaults, **user_query_args)
+            user = User.objects.get(**user_query_args)
+        except User.DoesNotExist:
+            user = User(**{django_user_main_attribute: main_attribute})
+            built = True
         except MultipleObjectsReturned:
             logger.error("There are more than one user with %s = %s",
                          django_user_main_attribute, main_attribute)
             return None
 
-        if created:
-            logger.debug('New user created')
+        if built:
+            logger.debug('Configuring new user "%s"', main_attribute)
             user = self.configure_user(user, attributes, attribute_mapping)
         else:
             logger.debug('User updated')

tests/testprofiles/models.py

@@ -30,3 +30,13 @@ class StandaloneUserModel(models.Model):
     USERNAME_FIELD.
     """
     username = models.CharField(max_length=30, unique=True)
+
+
+class RequiredFieldUser(models.Model):
+    email = models.EmailField(unique=True)
+    email_verified = models.BooleanField()
+
+    USERNAME_FIELD = 'email'
+
+    def set_unusable_password(self):
+        pass

tests/testprofiles/tests.py

@@ -134,6 +134,26 @@ def test_invalid_model_attribute_log(self):
             logs.output,
         )
 
+    @override_settings(AUTH_USER_MODEL='testprofiles.RequiredFieldUser')
+    def test_create_user_with_required_fields(self):
+        backend = Saml2Backend()
+        attribute_mapping = {
+            'mail': ['email'],
+            'mail_verified': ['email_verified']
+        }
+        attributes = {
+            'mail': ['[email protected]'],
+            'mail_verified': [True],
+        }
+        # User creation does not fail if several fields are required.
+        user = backend._get_or_create_saml2_user(
+            '[email protected]',
+            attributes,
+            attribute_mapping,
+        )
+        self.assertEquals(user.email, '[email protected]')
+        self.assertIs(user.email_verified, True)
+
     def test_django_user_main_attribute(self):
         backend = Saml2Backend()