URL, in templates, cannot reference non-handler route definitions

[igbanam]

With this root routes file

Marten.routes.draw do
  path "/nested-app", NestedApp::ROUTES, name: "nested_app"
end

A template file cannot reference this route using {% url "nested_app" %}. However, if it points to a handler, like in the example below

Marten.routes.draw do
  path "/nested-app", NestedApp::ROUTES, name: "nested_app"
  path "/direct-to-handler", DirectHandler, name: "direct"
end

Then {% url "direct" %} properly compiles into "/direct-to-handler".

I expect that with the nested routes, the same behaviour should hold?

[ellmetha]

Hey! 👋

Your nested_app route is an including route and as such it does not map to a concrete handler: only concrete handler routes can be resolved using the url template tag.

I imagine your NestedApp::ROUTES constant contains another route map, so instead of trying to resolve nested_app you should probably try to resolve the URL of one of the underlying (namespaced) routes (eg. {% url "nested_app:sub_route" %}).

[igbanam]

Thanks for clarifying this. I got excited about the apps separation and got stuck on the whole separation of concerns idea — i.e. an app should only know about routes defined within it. — I thought I could just point to the including route and have that redirect to a default in the included list. But now I think about it, there's no default per se.