Method dispatch_request

src/flask/app.py:879–902

Does the request dispatching. Matches the URL and returns the return value of the view or error handler. This does not have to be a response object. In order to convert the return value to a proper response object, call :func:`make_response`. .. versionchanged:: 0

(self)

        )

    def dispatch_request(self) -> ft.ResponseReturnValue:
        """Does the request dispatching.  Matches the URL and returns the
        return value of the view or error handler.  This does not have to
        be a response object.  In order to convert the return value to a
        proper response object, call :func:`make_response`.

        .. versionchanged:: 0.7
           This no longer does the exception handling, this code was
           moved to the new :meth:`full_dispatch_request`.
        """
        req = request_ctx.request
        if req.routing_exception is not None:
            self.raise_routing_exception(req)
        rule: Rule = req.url_rule  # type: ignore[assignment]
        # if we provide automatic options for this URL and the
        # request came with the OPTIONS method, reply automatically
        if (
            getattr(rule, "provide_automatic_options", False)
            and req.method == "OPTIONS"
        ):
            return self.make_default_options_response()
        # otherwise dispatch to the handler for that endpoint
        view_args: dict[str, t.Any] = req.view_args  # type: ignore[assignment]
        return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]

    def full_dispatch_request(self) -> Response:
        """Dispatches the request and on top of that performs request