src/main/cljs/dda/c4k_common/browser.cljs

@@ -28,9 +28,10 @@
   (let [content (-> (get-element-by-id name)
                     (.-value))]
     (cond
-      (and optional (st/blank? content))
-      nil
-      (some? deserializer)
+      (and optional (some? deserializer))
+      (when-not (st/blank? content)
+        (apply deserializer [content]))
+      (and (false? optional) (some? deserializer))
       (apply deserializer [content])
       :else
       content)))