Method _dispatch

dash/backends/_fastapi.py:546–565

(request: Request)

    def serve_callback(self, dash_app: Dash):
        async def _dispatch(request: Request):  # pylint: disable=unused-argument
            # pylint: disable=protected-access
            body = self.request_adapter().get_json()
            cb_ctx = dash_app._initialize_context(
                body
            )  # pylint: disable=protected-access
            func = dash_app._prepare_callback(
                cb_ctx, body
            )  # pylint: disable=protected-access
            args = dash_app._inputs_to_vals(
                cb_ctx.inputs_list + cb_ctx.states_list
            )  # pylint: disable=protected-access
            ctx = copy_context()
            partial_func = dash_app._execute_callback(
                func, args, cb_ctx.outputs_list, cb_ctx
            )  # pylint: disable=protected-access
            response_data = ctx.run(partial_func)
            if inspect.iscoroutine(response_data):
                response_data = await response_data
            return cb_ctx.dash_response.set_response(data=response_data)

        return _dispatch