Merge branch '1315-creating-roles-without-ical_participation_role-not-possible' into 'master'

Resolve "Creating roles without ical_participation_role not possible"

Closes #1315

See merge request !1878

aleksis/core/schema/role.py

@@ -42,6 +42,12 @@ class RoleBatchCreateMutation(BaseBatchCreateMutation):
             "fg_color",
             "bg_color",
         )
+        optional_fields = (
+            "ical_participation_role",
+            "vcard_related_type",
+            "fg_color",
+            "bg_color",
+        )
 
 
 class RoleBatchDeleteMutation(BaseBatchDeleteMutation):
@@ -68,3 +74,9 @@ class RoleBatchPatchMutation(BaseBatchPatchMutation):
             "fg_color",
             "bg_color",
         )
+        optional_fields = (
+            "ical_participation_role",
+            "vcard_related_type",
+            "fg_color",
+            "bg_color",
+        )