Tech Ocean
Apr 16, 2026 · Backend Development
Secure FastAPI Responses: Separate Input and Output Models with response_model
This article shows how FastAPI's response_model lets you define distinct input and output Pydantic models to hide sensitive fields like passwords, outlines common CRUD scenarios, demonstrates partial updates with PATCH and exclude_unset, and explains why extracting models into a dedicated file improves code organization.
PydanticPythonapi-design
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