raise_routing_exception() — flask Function Reference

Architecture documentation for the raise_routing_exception() function in app.py from the flask codebase.

Function python ApplicationCore Scaffolding called by 1

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ApplicationCore→ Scaffolding→ raise_routing_exception() — flask Function Reference

Dependency Diagram

graph TD
  ed42e052_3b19_c965_f4bb_2b6c30bb3cbc["raise_routing_exception()"]
  9f8cc56e_d5c4_e7a8_438a_3124c0dd5de5["Flask"]
  ed42e052_3b19_c965_f4bb_2b6c30bb3cbc -->|defined in| 9f8cc56e_d5c4_e7a8_438a_3124c0dd5de5
  59b4fb78_3cac_a043_29b8_6e0b8103b575["dispatch_request()"]
  59b4fb78_3cac_a043_29b8_6e0b8103b575 -->|calls| ed42e052_3b19_c965_f4bb_2b6c30bb3cbc
  style ed42e052_3b19_c965_f4bb_2b6c30bb3cbc fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/flask/app.py lines 561–587

    def raise_routing_exception(self, request: Request) -> t.NoReturn:
        """Intercept routing exceptions and possibly do something else.

        In debug mode, intercept a routing redirect and replace it with
        an error if the body will be discarded.

        With modern Werkzeug this shouldn't occur, since it now uses a
        308 status which tells the browser to resend the method and
        body.

        .. versionchanged:: 2.1
            Don't intercept 307 and 308 redirects.

        :meta private:
        :internal:
        """
        if (
            not self.debug
            or not isinstance(request.routing_exception, RequestRedirect)
            or request.routing_exception.code in {307, 308}
            or request.method in {"GET", "HEAD", "OPTIONS"}
        ):
            raise request.routing_exception  # type: ignore[misc]

        from .debughelpers import FormDataRoutingRedirect

        raise FormDataRoutingRedirect(request)