How to handle conflicting path parameters like /new, /:id

[danielcompton]

I'd like to create a routing system similar to Rails, e.g. /users, /users/123, /users/new. I haven't been able to figure out how to do this with Reitit. I tried this which fails

(let [rtr (r/router ["/users" 
                     ["" :user/list]
                     ["/new" :user/new]
                     ["/:id" :user/detail]])]
  [(r/match-by-path rtr "/users")
   (r/match-by-path rtr "/users/new")
   (r/match-by-path rtr "/users/123")])

Execution error (ExceptionInfo) at reitit.exception/exception (exception.cljc:19).
Router contains conflicting route paths:

-> /users/new 
-> /users/:id 

I tried setting :conflicting in various combinations on these routes but I couldn't find any combination that worked correctly.

(let [rtr (r/router ["/users"
                     ["" :user/list]
                     ["/new" :user/new {:conflicting true}]
                     ["/:id" :user/detail]])]
  [(r/match-by-path rtr "/users")
   (r/match-by-path rtr "/users/new")
   (r/match-by-path rtr "/users/123")])

Is this kind of routing supported? I'd like to be able to specify that :user/detail has a numeric :id so it could be disambiguated from /new. Inside :user/detail I could check for a path param of new and dispatch back out to :user/new, but that doesn't feel very clean.

[danielcompton]

This is supported by specifying :conflicts for the whole set of routes, e.g.

(let [rtr (r/router ["/users"
                     ["" :user/list]
                     ["/new" :user/new]
                     ["/:id" :user/detail]]
                    {:conflicts nil})]
  (map #(get-in % [:data :name]) 
       [(r/match-by-path rtr "/users")
        (r/match-by-path rtr "/users/new")
        (r/match-by-path rtr "/users/123")]))
=> (:user/list :user/new :user/detail)

https://clojurians.slack.com/archives/C7YF1SBT3/p1740367613539479?thread_ts=1740365643.273489&cid=C7YF1SBT3