How to inspect ValidationError raised during Prismatic Schema coercion?

Question

As a result of creating a Schema coercer and then trying to coerce a set of data I get as a result:

#schema.utils.ErrorContainer{:error #<ValidationError schema.utils.ValidationError@2abfe6ca>}

How do I get an explanation of what the actual validation error is?

Can you post a minimal code sample somewhere so others can look? — Daniel Compton, Feb 18 '15 at 09:02

score 2 · Answer 1 · answered Feb 18 '15 at 21:20

You can find the definition of the ValidationError type here (since you seem to be using Clojure on the JVM I deleted the #+cljs expressions):

(deftype ValidationError [schema value expectation-delay fail-explanation])

And the definition for the ErrorContainer record here:

(defrecord ErrorContainer [error])

So to get more information about the error you could just access any of the fields of the inner ValidationError:

(defn validation-error-details [error]
  (let [values (juxt #(.schema %) 
                     #(.value %)
                     #(.expectation-delay %)
                     #(.fail-explanation %))]
    (->> error :error values)))

;; Usage
(validation-error-details error) ; where error holds the value you posted

How to inspect ValidationError raised during Prismatic Schema coercion?

1 Answers1