Function create_ws_context

dash/backends/ws.py:189–221

Create callback context from WebSocket message. Args: payload: The callback payload response_adapter: The response adapter instance for the backend websocket_callback: The websocket callback instance for the backend Returns: AttributeDict with callback conte

(
    payload: CallbackExecutionBody,
    response_adapter: "ResponseAdapter",
    websocket_callback: DashWebsocketCallback,
)

def create_ws_context(
    payload: CallbackExecutionBody,
    response_adapter: "ResponseAdapter",
    websocket_callback: DashWebsocketCallback,
):
    """Create callback context from WebSocket message.

    Args:
        payload: The callback payload
        response_adapter: The response adapter instance for the backend
        websocket_callback: The websocket callback instance for the backend

    Returns:
        AttributeDict with callback context
    """
    # pylint: disable=import-outside-toplevel
    from dash._utils import AttributeDict, inputs_to_dict

    g = AttributeDict({})
    g.inputs_list = payload.get("inputs", [])
    g.states_list = payload.get("state", [])
    g.outputs_list = payload.get("outputs", [])
    g.input_values = inputs_to_dict(g.inputs_list)
    g.state_values = inputs_to_dict(g.states_list)
    g.triggered_inputs = [
        {"prop_id": x, "value": g.input_values.get(x)}
        for x in payload.get("changedPropIds", [])
    ]
    g.dash_response = response_adapter
    g.updated_props = {}
    g.dash_websocket = websocket_callback

    return g


async def run_ws_sender(