query_or_cookie_extractor() — fastapi Function Reference

Architecture documentation for the query_or_cookie_extractor() function in tutorial005_an_py39.py from the fastapi codebase.

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FastAPI→ Responses→ query_or_cookie_extractor() — fastapi Function Reference

Dependency Diagram

graph TD
  9fc67281_6c14_bbc6_7f44_326d24702a39["query_or_cookie_extractor()"]
  40f501d7_d1b8_cb68_b855_955f5691749a["tutorial005_an_py39.py"]
  9fc67281_6c14_bbc6_7f44_326d24702a39 -->|defined in| 40f501d7_d1b8_cb68_b855_955f5691749a
  style 9fc67281_6c14_bbc6_7f44_326d24702a39 fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

docs_src/dependencies/tutorial005_an_py39.py lines 12–18

def query_or_cookie_extractor(
    q: Annotated[str, Depends(query_extractor)],
    last_query: Annotated[Union[str, None], Cookie()] = None,
):
    if not q:
        return last_query
    return q