优化代码

app/controllers/shixuns_controller.rb

@@ -149,7 +149,10 @@ class ShixunsController < ApplicationController
 
   ## 获取顶部菜单
 	def menus
-  	@repertoires = Repertoire.includes(sub_repertoires: [:tag_repertoires]).order("updated_at asc")
+		@tag_repertoiry_ids = ShixunTagRepertoire.pluck(:tag_repertoire_id).uniq
+		@sub_repertoire_ids = TagRepertoire.where(id: @tag_repertoiry_ids).pluck(:sub_repertoire_id).uniq
+		repertoire_ids = SubRepertoire.where(id: @sub_repertoire_ids).pluck(:repertoire_id).uniq
+		@repertoires = Repertoire.includes(sub_repertoires: [:tag_repertoires]).where(id: repertoire_ids).order("updated_at asc")
 		# respond_with @repertoires
 
 		render_json

app/views/shixuns/menus.json.jbuilder

@@ -17,11 +17,11 @@ json.array! @repertoires do |rep|
 	json.id rep.id
 	json.name rep.name
 	json.sub_repertoires do
-		json.array! rep.sub_repertoires do |sub|
+		json.array! rep.sub_repertoires.select{ |sr| @sub_repertoire_ids.include?(sr.id)} do |sub|
 			json.id sub.id
 			json.name sub.name
 			json.tags do
-				json.array! sub.tag_repertoires do |tag|
+				json.array! sub.tag_repertoires.select{|tr| @tag_repertoiry_ids.include?(tr.id) } do |tag|
 					json.id tag.id
 					json.name tag.name
 				end