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Summary

Adds a clarification explaining why response_model is useful and how
it filters and validates response data.

Motivation

New users often confuse request models with response models or are
unclear why extra fields are removed from responses. This PR adds a
short explanation and example to clarify the intended behavior.

Changes

  • Added a new subsection explaining the purpose of response_model
  • Included a minimal example demonstrating field filtering

Notes

Documentation-only change. No runtime behavior is affected.

@github-actions github-actions bot added the docs Documentation about how to use FastAPI label Jan 6, 2026
@ynehra0777
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This PR focuses on clarifying the intent and behavior of response_model
for beginners. Happy to adjust wording or placement if needed.

Thanks & Regards
Yogesh Nehra

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@YuriiMotov YuriiMotov left a comment

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@ynehra0777, thanks for your interest!

I think this is explained well in current version and there is no need to clarify it.
Please, read read the whole page from the start. It's said that Response Model - Return Type is used to validate and filter data, and also to generate output schema. And response_model Parameter` is just an alternative to return type annotation

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2 participants