Fix product images

app/controllers/application_controller.rb

@@ -132,6 +132,22 @@ private
     end
   end
 
+  # General handler of json responses. Will be able to set some additional communication data.
+  # By default a response is ok.
+  def json_response(obj, options = {})
+    if obj.is_a?(SimplyStored::Couch)
+      if obj.errors.present?
+        json_api_errors = obj.errors.details.map{|key, ers| {id: key, status: '422', title: ers.map{|e| e[:error].to_s}.join(', '), source: {parameter: key}}}
+        options.reverse_merge(json: {errors: json_api_errors, ok: false}, status: :unprocessable_entity)
+      else
+        options.reverse_merge(json: obj)
+      end
+    else # assume crude Hash
+      obj[:ok] = true unless obj.has_key?(:ok)
+      obj
+    end
+  end
+
   def force_reloads
     load Rails.root.join('config/initializers/custom_form_builder.rb')
   end