CHANGELOG.md

 # Changelog
 
+## [1.2.1](https://gitlab.developers.cam.ac.uk/uis/devops/iam/activate-account/api/compare/1.2.0...1.2.1) (2025-02-27)
+
+### Bug Fixes
+
+* keep snake case in openapi schema token authentication ([417a7c8](https://gitlab.developers.cam.ac.uk/uis/devops/iam/activate-account/api/commit/417a7c84a69578cc8bf714c1111b00df8314bb9c))
+
 ## [1.2.0](https://gitlab.developers.cam.ac.uk/uis/devops/iam/activate-account/api/compare/1.1.0...1.2.0) (2025-02-25)
 
 ### Features

activate_account_project/settings/base.py

@@ -224,11 +224,16 @@ SPECTACULAR_SETTINGS = {
     ],
     "CAMELIZE_NAMES": True,
     "POSTPROCESSING_HOOKS": [
-        "drf_spectacular.contrib.djangorestframework_camel_case.camelize_serializer_fields",
+        "activate_account_project.spectacular.camelize_serializer_fields",
         "drf_spectacular.hooks.postprocess_schema_enums",
     ],
 }
 
+SPECTACULAR_COMPONENTS_KEEP_SNAKE_CASE = [
+    "TokenRequest",
+    "TokenResponse",
+]
+
 # Allow all origins to access API.
 CORS_URLS_REGEX = r"^.*$"
 CORS_ORIGIN_ALLOW_ALL = True

activate_account_project/spectacular.py

+from copy import deepcopy
+
+from django.conf import settings
+from drf_spectacular.contrib.djangorestframework_camel_case import (
+    camelize_serializer_fields as _camelize_serializer_fields,
+)
+
+
+def camelize_serializer_fields(result, generator, request, public):
+    """
+    By default, camelize_serializer_fields will camelize all serializer fields. This function does
+    not know about any parser_classes and renderer_classes that are set on the view, so it will
+    camelize all serializer fields. This function is a wrapper around the original function that
+    will camelize all serializer fields, but will keep the schemas of the components in
+    SPECTACULAR_COMPONENTS_KEEP_SNAKE_CASE in snake case. This is necessary because the OpenAPI
+    schema definitions are used to generate the client SDKs, and the client SDKs expect the schema
+    definitions to be in snake case.
+    """
+    snake_case_schemas = []
+
+    # Find all schemas that should keep their snake case
+    for (component_name, component_type), component in generator.registry._components.items():
+        if (
+            component_type == "schemas"
+            and component_name in settings.SPECTACULAR_COMPONENTS_KEEP_SNAKE_CASE
+        ):
+            snake_case_schemas.append((component, deepcopy(component.schema)))
+
+    # Camelize all serializer fields
+    result = _camelize_serializer_fields(result, generator, request, public)
+
+    # Restore the schemas that should keep their snake case
+    for component, schema in snake_case_schemas:
+        component.schema = schema
+
+    return result

pyproject.toml

 [tool.poetry]
 name = "activate_account"
-version = "1.2.0"
+version = "1.2.1"
 description = ""
 authors = [ ]
 readme = "README.md"