fix bug

app/controllers/exercises_controller.rb

@@ -201,16 +201,16 @@ class ExercisesController < ApplicationController
   def common_header
     ActiveRecord::Base.transaction do
       begin
+        @user_left_time = nil
         if @user_course_identity > Course::ASSISTANT_PROFESSOR
           @is_teacher_or = 0
           @user_exercise_answer = @exercise.check_user_answer_status(current_user)
           @user_commit_counts = 0
-          get_exercise_left_time(@exercise,current_user)
+          @user_left_time = get_exercise_left_time(@exercise,current_user)
         else
           @is_teacher_or = 1
           @user_exercise_answer = 3  #教师页面
           @user_commit_counts = @exercise.exercise_users.where(commit_status:1).count   #已提交的用户数
-          @user_left_time = nil
         end
         @ex_status = @exercise.get_exercise_status(current_user.id)
 
@@ -1022,8 +1022,6 @@ class ExercisesController < ApplicationController
           end
         end
 
-        get_exercise_left_time(@exercise,@exercise_user_current)
-
         # ex_time = @exercise.time
         # if ex_time > 0
         #   time_mill = ex_time * 60   #转为秒
@@ -1038,10 +1036,12 @@ class ExercisesController < ApplicationController
 
         @t_user_exercise_status = @exercise.get_exercise_status(current_user.id)
 
+        @user_left_time = nil
         if @user_course_identity < Course::STUDENT || (@t_user_exercise_status == 3) ||
             (@exercise_user_current.present? && @exercise_user_current.commit_status == 1)
           @user_exercise_status = 1  #当前用户为老师/试卷已截止/试卷已提交不可编辑
         else
+          @user_left_time = get_exercise_left_time(@exercise,current_user)
           @user_exercise_status = 0  #可编辑
         end
 

app/helpers/exercises_helper.rb

@@ -681,9 +681,11 @@ module ExercisesHelper
     result
   end
 
-  def get_exercise_left_time(exercise,exercise_user)
+  def get_exercise_left_time(exercise,user)
     ex_time = exercise.time
+    user_left_time = nil
     if ex_time > 0
+      exercise_user = exercise.exercise_users.find_by(user_id:user.id)
       time_mill = ex_time * 60   #转为秒
       exercise_end_time = exercise.end_time.present? ? exercise.end_time.to_i : 0
       exercise_user_start = exercise_user.present? ? exercise_user.start_at.to_i : 0
@@ -691,9 +693,9 @@ module ExercisesHelper
         time_mill = exercise_end_time - exercise_user_start   #如果开始答题时间加试卷的限时长大于试卷的截止时间，则以试卷的截止时间到开始答题时间为试卷的限时
       end
       exercise_user_left_time = Time.now.to_i - exercise_user_start   #用户已回答的时间
-      @user_left_time = (time_mill < exercise_user_left_time) ? nil : (time_mill - exercise_user_left_time)   #当前用户对试卷的回答剩余时间
+      user_left_time = (time_mill < exercise_user_left_time) ? nil : (time_mill - exercise_user_left_time)   #当前用户对试卷的回答剩余时间
     end
-    @user_left_time
+    user_left_time
   end
 
   #实训题学生代码的行数