How to access db connection stored in app from subapp

[SoumenDass]

Long story short

I'm trying to find a way to access the database connection details stored in app (via dict-like interface) from the subapp.

Expected behaviour

There must be some access method like subapp.get_root_app() so that I can then use that to get the database connections stored via subapp.get_root_app()['db']

Actual behaviour

I can't find anything in the documentation that shows a way to do this. So I'm using the following approach:

app = web.Application()
app['db'] = db

# sub application setup
subapp = web.Application()
subapp['parent'] = app

# add subapp to main app
app.add_subapp('/sub/', subapp)

Then in the subapp's request handler, I'm doing request.app['parent']['db'] - it works when I know that the subapp is just one level below main/parent app. But what if there are nested subapps?

Steps to reproduce

As shown above.

Your environment

CentOS / aiohttp 2.3 / Nginx

[asvetlov]

Answered in #2413

[SoumenDass]

thanks

[mattrasband]

@asvetlov It seems like #2413 doesn't address this in the context of signals - as a lot of our connections are managed via a cleanup_ctx in the root app.

Are there any other recommended ways of sharing given that common usage?

[webknjaz]

Plz open a new issue, this is going to get lost.