get_route_handler() — fastapi Function Reference

Architecture documentation for the get_route_handler() function in tutorial002_an_py39.py from the fastapi codebase.

Function python FastAPI Responses calls 2

Entity Profile

FastAPI→ Responses→ get_route_handler() — fastapi Function Reference

Dependency Diagram

graph TD
  b85fe878_76ff_c7e8_395d_08ae260c9e39["get_route_handler()"]
  1f47899e_c280_d961_8a24_e09331ccddca["ValidationErrorLoggingRoute"]
  b85fe878_76ff_c7e8_395d_08ae260c9e39 -->|defined in| 1f47899e_c280_d961_8a24_e09331ccddca
  2b3c8ec5_f007_7808_7e6a_0e94569b6a17["get_route_handler()"]
  b85fe878_76ff_c7e8_395d_08ae260c9e39 -->|calls| 2b3c8ec5_f007_7808_7e6a_0e94569b6a17
  7702da8c_3f6b_a8bb_d4ca_61939c372354["errors()"]
  b85fe878_76ff_c7e8_395d_08ae260c9e39 -->|calls| 7702da8c_3f6b_a8bb_d4ca_61939c372354
  style b85fe878_76ff_c7e8_395d_08ae260c9e39 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

docs_src/custom_request_and_route/tutorial002_an_py39.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