Get path parameters from the URL

[vindevoy]

As Shiny is based on Starlette, I expected it would be possible with the Mount of Starlette to provide a dynamic path, where I could recover the parameters from it. This is perfectly possible in Starlette.

https://www.starlette.io/routing/

Actually, the code in the first example in the link above, is very close to the code in your routing example. So I had hoped this would work, but it does not:

from shiny import App, ui
from starlette.applications import Starlette
from starlette.routing import Mount


app_home = App(
    ui=ui.page_fluid("home page"),
    server=None)


app_user = App(
    ui=ui.page_fluid(f"user: {user_name}"),  # Or something similar
    server=None)


routes = [
    Mount("/user/{user_name}", app=app_user),
    Mount("/", app=app_home),
]

app = Starlette(routes=routes)

Actually, whatever I do, I never get a response on anything after "/user/" I always get a "Not Found" as text.