优化列表

app/controllers/challenges_controller.rb

@@ -155,9 +155,8 @@ class ChallengesController < ApplicationController
 
   def index
     uid_logger("identifier: #{params}")
-
-    @challenges = @shixun.challenges.fields_for_list
-
+    @challenges = @shixun.challenges.fields_for_list.joins(:games).where(games: {user_id: current_user.id})
+                      .select("challenges.*, games.identifier identifier, games.status status")
     @editable = @shixun.status == 0 # before_action：有判断权限，如果没发布，则肯定是管理人员
     @user = current_user
     @shixun.increment!(:visits)

app/models/challenge.rb

@@ -69,10 +69,10 @@ class Challenge < ApplicationRecord
   end
 
   # 开启挑战
-  def open_game user_id, shixun
-    game = self.games.where(user_id: user_id).first
-    if game.present?
-      shixun.task_pass || game.status != 3 ? "/tasks/#{game.identifier}" : ""
+  def open_game
+    identifier = self.identifier
+    if identifier.present?
+      shixun.task_pass || status != 3 ? "/tasks/#{identifier}" : ""
     else
       self.position == 1 ? "/api/shixuns/#{shixun.identifier}/shixun_exec" : ""
     end
@@ -92,16 +92,16 @@ class Challenge < ApplicationRecord
   # end
 
   ## 用户关卡状态 0: 不能开启实训; 1:直接开启; 2表示已完成
-  def user_tpi_status user_id
+  def user_tpi_status
     # todo: 以前没加索引导致相同关卡,同一用户有多个games
     # 允许跳关则直接开启
-    game = games.where(user_id: user_id).take
-    if game.blank?
-      position == 1 ? 1 : 0
+    identifier = self.identifier
+    if identifier.blank?
+      self.position == 1 ? 1 : 0
     else
-      if game.status == 3
+      if status == 3
         shixun.task_pass ? 1 : 0
-      elsif game.status == 2
+      elsif status == 2
         2
       else
         1

app/views/challenges/index.json.jbuilder

@@ -19,7 +19,7 @@ if @challenges.present?
     json.passed_count challenge.user_passed_count
     json.playing_count challenge.playing_count
     json.name_url shixun_challenge_path(challenge, shixun_identifier: @shixun.identifier)
-    json.open_game challenge.open_game(@user.id, @shixun)
+    json.open_game challenge.open_game
     if @editable
       json.edit_url edit_shixun_challenge_path(challenge, shixun_identifier: @shixun.identifier)
       json.delete_url shixun_challenge_path(challenge, shixun_identifier: @shixun.identifier)
@@ -27,6 +27,6 @@ if @challenges.present?
       json.down_url index_down_shixun_challenge_path(challenge, :shixun_identifier =>  @shixun.identifier) if @shixun.challenges_count != challenge.position
     end
     #json.passed challenge.has_passed?(@user.id)
-    json.status challenge.user_tpi_status @user.id
+    json.status challenge.user_tpi_status
   end
 end