ecs: add graduation_subitems list api

app/controllers/ecs/graduation_subitems_controller.rb

@@ -0,0 +1,5 @@
+class Ecs::GraduationSubitemsController < Ecs::BaseController
+  def index
+    @graduation_subitems = current_year.ec_graduation_subitems#.reorder('ec_graduation_requirements.position ASC, ec_graduation_subitems.position ASC')
+  end
+end

app/views/ecs/graduation_subitems/index.json.jbuilder

@@ -0,0 +1,8 @@
+json.graduation_subitems do
+  json.array! @graduation_subitems do |graduation_subitem|
+    json.extract! graduation_subitem, :id, :position, :content
+    json.graduation_requirement_position graduation_subitem.ec_graduation_requirement.position
+  end
+end
+
+json.count @graduation_subitems.size

config/routes.rb

@@ -737,6 +737,7 @@ Rails.application.routes.draw do
         resource :graduation_course_supports, only: [:show, :create]
         resource :reach_evaluation, only: [:show, :create]
         resource :reach_criteria, only: [:create]
+        resources :graduation_subitems, only: [:index]
       end
 
       resources :ec_courses, only: [] do