declarative schemas

[ikitommi]

For web apps, Schemas are used to both validate & document the apis. Would be nice if one could create the schemas more declaratively. There could be a schema function in schema-tools that would read declarations (using multimethod dispatch) and create the needed schema structures for those.

Something like:

(require '[schma.core :as s])
(require '[schema-tools.core :as st])

(s/defschema Model 
  "Model description"
  {:size (st/schema s/Int {:min 10, :max 20, :description "number 10-20"})
   :gender (st/schema (s/enum :male :female) {:description "gender"})})

[mangolas]

How about describing schema in hiccup style

(s/defschema Model
  (st/schema 
    [:type/map {:description "Model description"} 
      [:size :type/int {:optional true 
                              :default 0 :min 10 :max 20
                              :description "number 10-20"}]
      [:gender :type/enum {:values [:male :female]
                                        :default :male
                                        :description "gender"}]]))

[Deraen]

Could be alternative, but it would need to be converted to "real" Schema representation by some function. And we still need the Schemas for min/max etc.

[mangolas]

Sure, I meant it as a way to describe schema by end user, like me, who just want's to model api ins and outs. Internally it can be the "real" Schema or whatever.

[ikitommi]

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