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Fix response_model being set to None for non-generator endpoints

This commit is contained in:
Yurii Motov 2026-03-11 09:16:56 +01:00
parent 31fdda649a
commit 9f917e4887
1 changed files with 5 additions and 4 deletions
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9
fastapi/routing.py
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@ -932,10 +932,11 @@ class APIRoute(routing.Route):
response_model = None
else:
stream_item = get_stream_item_type(return_annotation)
if stream_item is not None:
# Extract item type for JSONL or SSE streaming when
# response_class is DefaultPlaceholder (JSONL) or
# EventSourceResponse (SSE).
if stream_item is not None and is_generator:
# Extract item type for JSONL or SSE streaming for
# generator endpoints when response_class is
# DefaultPlaceholder (JSONL) or EventSourceResponse
# (SSE).
# ServerSentEvent is excluded: it's a transport
# wrapper, not a data model, so it shouldn't feed
# into validation or OpenAPI schema generation.