@seancorfield I haven't used spec and to be honest do not know much about it (even though its a big deal in the community, thinking to dive later). @dharrigan malli seems too heavy for my use case I have end up creating custom parser. Please checkout a snippet below :

(defn parse-query [{params :params}]
  (p/parse params {:org_id p/to-integer}))

@suren That sounds like a #clojurescript or #reagent question -- not Ring?