return group members

app/controllers/concerns/scimaenaga/response.rb

@@ -51,16 +51,31 @@ def list_objects(objects)
       end
 
       def object_response(object)
-        schema = case object
-                 when Scimaenaga.config.scim_users_model
-                   Scimaenaga.config.user_schema
-                 when Scimaenaga.config.scim_groups_model
-                   Scimaenaga.config.group_schema
-                 else
-                   raise Scimaenaga::ExceptionHandler::InvalidQuery,
-                         "Unknown model: #{object}"
-                 end
-        find_value(object, schema)
+        case object
+        when Scimaenaga.config.scim_users_model
+          user_object_response(object)
+        when Scimaenaga.config.scim_groups_model
+          group_object_response(object)
+        else
+          raise Scimaenaga::ExceptionHandler::InvalidQuery,
+                "Unknown model: #{object}"
+        end
+      end
+
+      def user_object_response(object)
+        find_value(object, Scimaenaga.config.user_schema)
+      end
+
+      def group_object_response(object)
+        response = find_value(object, Scimaenaga.config.group_schema.except(:members))
+        members_attribute = Scimaenaga.config.group_schema[:members]
+        return response if members_attribute.nil?
+
+        members_raw = find_value(object, members_attribute)
+        response[:members] = members_raw.map do |member|
+          find_value(member, Scimaenaga.config.user_abbreviated_schema)
+        end
+        response
       end
 
       # `find_value` is a recursive method that takes a "user" and a