diff --git a/app/controllers/games_controller.rb b/app/controllers/games_controller.rb
index 5f93bc36b..163ba1847 100644
--- a/app/controllers/games_controller.rb
+++ b/app/controllers/games_controller.rb
@@ -77,7 +77,7 @@ class GamesController < ApplicationController
 
     # 区分选择题和编程题，st：0编程题；
     if @st == 0
-      has_answer = game_challenge.challenge_answers.size == 0 ? false : true
+      has_answer = game_challenge.challenge_answers.size != 0
       game_challenge.answer = nil
       mirror_name = @shixun.mirror_name
 
@@ -87,7 +87,7 @@ class GamesController < ApplicationController
       rescue
         uid_logger("实训平台繁忙，繁忙等级（81）")
       end
-      tpm_cases_modified = (game_challenge.modify_time != @game.modify_time ? true : false)  # modify_time 决定TPM测试集是否有更新
+      tpm_cases_modified = (game_challenge.modify_time != @game.modify_time)  # modify_time 决定TPM测试集是否有更新
 
       @task_result = {tpm_modified: tpm_modified, tpm_cases_modified: tpm_cases_modified, mirror_name: mirror_name, has_answer: has_answer}
 
@@ -629,7 +629,7 @@ class GamesController < ApplicationController
       # user_answer虽然是传的数组,但是可能存在多选择提的情况.
       user_answer_tran = user_answer[index].size > 1 ? user_answer[index].split("").sort.join("") :  user_answer[index]
       standard_answer_tran = choose.standard_answer.size > 1 ? choose.standard_answer.split("").sort.join("") :  choose.standard_answer
-      correct = (user_answer_tran == standard_answer_tran) ? true : false
+      correct = (user_answer_tran == standard_answer_tran)
       if str.present?
         str += ","
       end
diff --git a/app/controllers/myshixuns_controller.rb b/app/controllers/myshixuns_controller.rb
index 95fbf8200..f4549d691 100644
--- a/app/controllers/myshixuns_controller.rb
+++ b/app/controllers/myshixuns_controller.rb
@@ -278,7 +278,6 @@ class MyshixunsController < ApplicationController
         end
       end
 
-
       if game.status == 2
         @resubmit = Time.now.to_i
       end
diff --git a/db/migrate/20190708062910_add_index_for_run_code_message.rb b/db/migrate/20190708062910_add_index_for_run_code_message.rb
new file mode 100644
index 000000000..4449d58a2
--- /dev/null
+++ b/db/migrate/20190708062910_add_index_for_run_code_message.rb
@@ -0,0 +1,5 @@
+class AddIndexForRunCodeMessage < ActiveRecord::Migration[5.2]
+  def change
+    add_index :run_code_messages, :game_id
+  end
+end