Resolve "Frontend for Models"

Closes #1 (closed)

aleksis/apps/lesrooster/schema/validity_range.py

@@ -12,7 +12,7 @@ class ValidityRangeType(PermissionsTypeMixin, DjangoFilterMixin, DjangoObjectTyp
         fields = ("id", "school_term", "name", "date_start", "date_end")
         filter_fields = {
             "id": ["exact"],
-            "school_term": ["id", "id__in"],
+            "school_term": ["exact", "in"],
             "name": ["icontains", "exact"],
             "date_start": ["exact", "lt", "lte", "gt", "gte"],
             "date_end": ["exact", "lt", "lte", "gt", "gte"],