`ui.panel_conditional()` within a module assumes namespaced inputs

[gadenbuie]

AFAICT, it isn't possible for users to escape the automatic module namespacing for the conditional input. In the example below, input.switch is intended to refer to a global "switch" input, but because ui.panel_conditional() is called within a module it always namespaces the condition expression to the module.

from shiny import App, module, reactive, render, ui


@module.ui
def counter_ui():
    return ui.card(
        ui.card_header("Conditional Panel"),
        ui.panel_conditional("input.switch", ui.card("Test")),
        ui.output_ui("dynamic_card")
    )


@module.server
def counter_server(input, output, session, global_switch):
    @render.ui()
    @reactive.event(global_switch)
    def dynamic_card():
        print(f"Switch: {global_switch()}")
        return ui.card("Dynamic Card") if global_switch() else None


app_ui = ui.page_fluid(
    ui.input_switch("switch", "Switch", value=False),
    counter_ui("counter1"),
)


def server(input, output, session):
    counter_server("counter1", global_switch=input.switch)


app = App(app_ui, server)

Example on shinylive

Reported on Discord

[cpsievert]

I think we could address this by adding a namespace argument to panel_conditional() and allow something like namespace=None to effectively mean namespace=shiny._namespaces.Root?

[cpsievert]

Also more generally it'd be nice to have some documentation on how to "escape" auto-namespacing in modules. In other places, I'm pretty sure you do that by wrapping your ids in ResolvedId(), but at moment, I don't think we make that part of the public API.

[davos-i]

I think I have a similar issue where I get a client error when trying to use a reactive input in the ui.panel_conditional() in the main app that I have returned from a module UI.
This example shows a ui.panel_conditional() responding to input within the module but it doesn't work when I try to pass that value to the main app and use in another ui.panel_conditional(), even though I can access the value in my server.
Any advice would be appreciated!
Link to shinylive example