Function extract_grouped_input_state_callback_args_from_kwargs

dash/dependencies.py:225–270

(kwargs)

def extract_grouped_input_state_callback_args_from_kwargs(kwargs):
    input_parameters = kwargs["inputs"]
    if isinstance(input_parameters, DashDependency):
        input_parameters = [input_parameters]

    state_parameters = kwargs.get("state", None)
    if isinstance(state_parameters, DashDependency):
        state_parameters = [state_parameters]

    if isinstance(input_parameters, dict):
        # Wrapped function will be called with named keyword arguments
        if state_parameters:
            if not isinstance(state_parameters, dict):
                raise ValueError(
                    "The input argument to app.callback was a dict, "
                    "but the state argument was not.\n"
                    "input and state arguments must have the same type"
                )

            # Merge into state dependencies
            parameters = state_parameters
            parameters.update(input_parameters)
        else:
            parameters = input_parameters

        return parameters

    if isinstance(input_parameters, (list, tuple)):
        # Wrapped function will be called with positional arguments
        parameters = list(input_parameters)
        if state_parameters:
            if not isinstance(state_parameters, (list, tuple)):
                raise ValueError(
                    "The input argument to app.callback was a list, "
                    "but the state argument was not.\n"
                    "input and state arguments must have the same type"
                )

            parameters += list(state_parameters)

        return parameters

    raise ValueError(
        "The input argument to app.callback may be a dict, list, or tuple,\n"
        f"but received value of type {type(input_parameters)}"
    )


def extract_grouped_input_state_callback_args_from_args(args):