:query-params [ids :- String display :- String] guys how can I turn the above parameters as optional instead of required?

@leo.ribeiro: with :query-params [{ids :- String ""}, {display :- String "default"}]

@ikitommi: thank you… do you know where can I find this?

like in the docs, or how can I find this in the source?

c-api uses the plumbing fnk-notation, see https://github.com/plumatic/plumbing/blob/master/README.md#bring-on-defnk

I think it should be better visible and linked in the wiki

With examples.

the source code for query-params is here: https://github.com/metosin/compojure-api/blob/master/src/compojure/api/meta.clj#L187-193

@ikitommi: thank you, I will take a look