get_route_handler() — fastapi Function Reference

Architecture documentation for the get_route_handler() function in tutorial002_py310.py from the fastapi codebase.

Function python FastAPI Responses calls 2

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FastAPI→ Responses→ get_route_handler() — fastapi Function Reference

Dependency Diagram

graph TD
  0308ef70_b277_44b2_97b2_8a07af42fe47["get_route_handler()"]
  9fa3b0f3_cbec_fd46_c0db_5e7ae78f9fc4["ValidationErrorLoggingRoute"]
  0308ef70_b277_44b2_97b2_8a07af42fe47 -->|defined in| 9fa3b0f3_cbec_fd46_c0db_5e7ae78f9fc4
  2b3c8ec5_f007_7808_7e6a_0e94569b6a17["get_route_handler()"]
  0308ef70_b277_44b2_97b2_8a07af42fe47 -->|calls| 2b3c8ec5_f007_7808_7e6a_0e94569b6a17
  7702da8c_3f6b_a8bb_d4ca_61939c372354["errors()"]
  0308ef70_b277_44b2_97b2_8a07af42fe47 -->|calls| 7702da8c_3f6b_a8bb_d4ca_61939c372354
  style 0308ef70_b277_44b2_97b2_8a07af42fe47 fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

docs_src/custom_request_and_route/tutorial002_py310.py lines 9–20

    def get_route_handler(self) -> Callable:
        original_route_handler = super().get_route_handler()

        async def custom_route_handler(request: Request) -> Response:
            try:
                return await original_route_handler(request)
            except RequestValidationError as exc:
                body = await request.body()
                detail = {"errors": exc.errors(), "body": body.decode()}
                raise HTTPException(status_code=422, detail=detail)

        return custom_route_handler