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< p > Most routing libraries allow conflicting paths within a router. On lookup, the first match is used making rest of the matching routes effecively unreachable. This is not good, especially if route tree is merged from multiple sources.< / p >
< p > Reitit resolves this by running explicit conflicit resolution when a Router is created. Conflicting routes are passed into a < code > :conflicts< / code > callback. Default implementation throws < code > ex-info< / code > with a descriptive message.< / p >
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< p > Examples router with conflicting routes:< / p >
< pre > < code class = "lang-clj" > (< span class = "hljs-name" > require< / span > ' [reitit.core < span class = "hljs-symbol" > :as< / span > r])
(< span class = "hljs-name" > < span class = "hljs-builtin-name" > def< / span > < / span > routes
[[< span class = "hljs-string" > " /ping" < / span > ]
[< span class = "hljs-string" > " /:user-id/orders" < / span > ]
[< span class = "hljs-string" > " /bulk/:bulk-id" < / span > ]
[< span class = "hljs-string" > " /public/*path" < / span > ]
[< span class = "hljs-string" > " /:version/status" < / span > ]])
< / code > < / pre >
< p > By default, < code > ExceptionInfo< / code > is thrown:< / p >
< pre > < code class = "lang-clj" > (< span class = "hljs-name" > r/router< / span > routes)
< span class = "hljs-comment" > ; CompilerException clojure.lang.ExceptionInfo: Router contains conflicting routes:< / span >
< span class = "hljs-comment" > ;< / span >
< span class = "hljs-comment" > ; /:user-id/orders< / span >
< span class = "hljs-comment" > ; -> /public/*path< / span >
< span class = "hljs-comment" > ; -> /bulk/:bulk-id< / span >
< span class = "hljs-comment" > ;< / span >
< span class = "hljs-comment" > ; /bulk/:bulk-id< / span >
< span class = "hljs-comment" > ; -> /:version/status< / span >
< span class = "hljs-comment" > ;< / span >
< span class = "hljs-comment" > ; /public/*path< / span >
< span class = "hljs-comment" > ; -> /:version/status< / span >
< span class = "hljs-comment" > ;< / span >
< / code > < / pre >
< p > Just logging the conflicts:< / p >
< pre > < code class = "lang-clj" > (< span class = "hljs-name" > r/router< / span >
routes
{< span class = "hljs-symbol" > :conflicts< / span > (< span class = "hljs-name" > < span class = "hljs-builtin-name" > comp< / span > < / span > println reitit/conflicts-str)})
< span class = "hljs-comment" > ; Router contains conflicting routes:< / span >
< span class = "hljs-comment" > ;< / span >
< span class = "hljs-comment" > ; /:user-id/orders< / span >
< span class = "hljs-comment" > ; -> /public/*path< / span >
< span class = "hljs-comment" > ; -> /bulk/:bulk-id< / span >
< span class = "hljs-comment" > ;< / span >
< span class = "hljs-comment" > ; /bulk/:bulk-id< / span >
< span class = "hljs-comment" > ; -> /:version/status< / span >
< span class = "hljs-comment" > ;< / span >
< span class = "hljs-comment" > ; /public/*path< / span >
< span class = "hljs-comment" > ; -> /:version/status< / span >
< span class = "hljs-comment" > ;< / span >
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