ADD project languages api

app/controllers/project_languages_controller.rb

@@ -0,0 +1,5 @@
+class ProjectLanguagesController < ApplicationController
+  def index
+    @project_languages = ProjectLanguage.search(params[:name]).without_content
+  end
+end

app/views/project_languages/index.json.jbuilder

@@ -0,0 +1 @@
+json.project_languages @project_languages, :id, :name

config/routes.rb

@@ -1,4 +1,5 @@
 Rails.application.routes.draw do
+  get 'project_languages/index'
   require 'sidekiq/web'
   require 'admin_constraint'
   mount Sidekiq::Web => '/sidekiq', :constraints => AdminConstraint.new
@@ -23,6 +24,7 @@ Rails.application.routes.draw do
     delete 'commons/delete',      to: 'commons#delete'
 
     resources :project_categories, only: [:index, :show]
+    resources :project_languages, only: [:index, :show]
 
     # resources :memos do
     #   member do