Building APIs with FastAPI · 12-day planAll days
Day 4 of 12 25 minresponse_modelStatus codesHTTPException
Take control of what your API sends back. Shape responses with response_model so secrets never leak, set the right status codes, raise HTTPException for errors like 404, return custom error formats, and document all of it automatically.
By the end of today you can
- Shape and filter responses with response_model
- Use separate input and output models so private fields stay private
- Set status codes such as 201 Created and 204 No Content
- Raise HTTPException for 404s and other errors, with headers
- Add custom exception handlers for your own error types
What's inside
- 4 sections
- 3 diagrams and mind maps
- 5 code examples you can run
- 5-question quiz
- 1Response models
- 2Status codes
- 3Errors with HTTPException
- 4Your own exceptions
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