ValidationErrorLoggingRoute Class — fastapi Architecture

Architecture documentation for the ValidationErrorLoggingRoute class in tutorial002_an_py39.py from the fastapi codebase.

Class python FastAPI

Entity Profile

FastAPI→ ValidationErrorLoggingRoute Class — fastapi Architecture

Dependency Diagram

graph TD
  1f47899e_c280_d961_8a24_e09331ccddca["ValidationErrorLoggingRoute"]
  aa28685f_bb97_e988_ff40_3e5385960f32["APIRoute"]
  1f47899e_c280_d961_8a24_e09331ccddca -->|extends| aa28685f_bb97_e988_ff40_3e5385960f32
  9b55f91c_5e91_df2b_a4df_89a0d595abb7["tutorial002_an_py39.py"]
  1f47899e_c280_d961_8a24_e09331ccddca -->|defined in| 9b55f91c_5e91_df2b_a4df_89a0d595abb7
  b85fe878_76ff_c7e8_395d_08ae260c9e39["get_route_handler()"]
  1f47899e_c280_d961_8a24_e09331ccddca -->|method| b85fe878_76ff_c7e8_395d_08ae260c9e39

Relationship Graph

Source Code

docs_src/custom_request_and_route/tutorial002_an_py39.py lines 8–20

class ValidationErrorLoggingRoute(APIRoute):
    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