reitit/doc/basics/route_conflicts.md
2018-07-21 09:48:07 +03:00

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# Route Conflicts
We should fast if a router contains conflicting paths or route names.
When a `Router` is created via `reitit.core/router`, both path and route name conflicts are checked automatically. By default, in case of conflict, an `ex-info` is thrown with a descriptive message. Is some (legacy api) cases, path conflicts are should be allowed and one can override the path conflict resolution via `:conflicts` router option.
## Path Conflicts
Routes with path conflicts:
```clj
(require '[reitit.core :as r])
(def routes
[["/ping"]
["/:user-id/orders"]
["/bulk/:bulk-id"]
["/public/*path"]
["/:version/status"]])
```
Creating router with defaults:
```clj
(r/router routes)
; CompilerException clojure.lang.ExceptionInfo: Router contains conflicting route paths:
;
; /:user-id/orders
; -> /public/*path
; -> /bulk/:bulk-id
;
; /bulk/:bulk-id
; -> /:version/status
;
; /public/*path
; -> /:version/status
;
```
To ignore the conflicts:
```clj
(r/router
routes
{:conflicts nil})
; => #object[reitit.core$linear_router$reify]
```
To just log the conflicts:
```clj
(r/router
routes
{:conflicts (fn [conflicts]
(println (r/path-conflicts-str conflicts)))})
; Router contains conflicting route paths:
;
; /:user-id/orders
; -> /public/*path
; -> /bulk/:bulk-id
;
; /bulk/:bulk-id
; -> /:version/status
;
; /public/*path
; -> /:version/status
;
; => #object[reitit.core$linear_router$reify]
```
## Name conflicts
Routes with name conflicts:
```clj
(def routes
[["/ping" ::ping]
["/admin" ::admin]
["/admin/ping" ::ping]])
```
Creating router with defaults:
```clj
(r/router routes)
;CompilerException clojure.lang.ExceptionInfo: Router contains conflicting route names:
;
;:reitit.core/ping
;-> /ping
;-> /admin/ping
;
```
There is no way to disable the name conflict resolution.