FEATURE: New "Dropdown" user field type

app/serializers/user_field_serializer.rb

@@ -5,5 +5,14 @@ class UserFieldSerializer < ApplicationSerializer
              :field_type,
              :editable,
              :required,
-             :show_on_profile
+             :show_on_profile,
+             :options
+
+  def options
+    object.user_field_options.pluck(:value)
+  end
+
+  def include_options?
+    options.present?
+  end
 end