fix inherited fks (#8)

Author: provinzkraut

litestar_django/dto.py

@@ -213,6 +213,10 @@ def get_model_fields(
                     # we need a concrete field to infer the type though, so we construct
                     # it from the type of the related primary key field
                     related_field = fk_tuple[1]
+                    # follow inherited fk relationships
+                    while isinstance(related_field, ForeignKey):
+                        related_field = related_field.related_fields[0][1]
+
                     id_field = type(related_field)(
                         name=name,
                         null=field.null,

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "litestar-django"
-version = "0.2.1"
+version = "0.2.2"
 description = "Django model support for Litestar"
 readme = "README.md"
 license = { text = "MIT" }