Tokens filter mismatch error when routing

[kszys]

I ran into some issues with routing, and I am not sure I am doing something wrong, or this is an expected behaviour...

I am trying to define a catch-all route in py4web that will handle things not handled by any other route. Here a minimal code example:

# __init__.py
from py4web import action

@action('index')
@action('<project_id:int>')
def index(project_id=None):
    return f"Index: (project_id={project_id})"

@action('<anything:path>')
def catch_all(anything):
    return f"Catch-all: {anything}"

If I try to access the application with some random URL, I get a pretty extensive traceback with the main error message being:

ombott.router.radidict.RadiDictKeyError: tokens filter mismatch

The problem is reported while processing the:

@action('<anything:path>')

Not sure, if what I try is not valid or otherwise wrong, or it is a bug in Ombott?

[kszys]

Here is an answer I got from Val K elsewhere:

Hi!
Short story: try to add static prefix to the first route: @action('projects/<project_id:int>')

Long story: ombott uses radix-tree hybrid router, it is declaration-order-independent and instead of order-dependent resolving it prioritizes static route-fragment over dynamic one, since this is most expected behavior.
So this solution has some constraints - you can not have 2 (or more) routes that have dynamic fragment of different types (int, path) in the same place.

Hence the behaviour is expected and it is a documentation issue rather than a bug. I submitted a PR (web2py/py4web#938) to improve the documentation, and I am closing this issue.