FastAPI / update detail

0.153.0

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FastAPI·Oct 20, 2026, 01:47 PMFixAI-assisted summary

Summary

Browser form handling now works for unions of Pydantic models.
Empty scalar fields use defaults or raise missing errors; omitted booleans default to False, empty list items are preserved, and missing files are treated as missing.
JSON request bodies remain unchanged.

featurebugfixsource healthy

Official source Last checked Oct 20, 2026, 7:01 PM

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AI-assisted summarysource healthyLast checked Oct 20, 2026, 7:01 PM

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