再次修改填空题

app/helpers/exercises_helper.rb

@@ -178,7 +178,7 @@ module ExercisesHelper
           null_stand_choice.each_with_index do |s,index|
             s_choice_text = null_stand_text[index]
             user_count = 0
-            user_count = user_count + effictive_users.select{|answer| answer.exercise_choice_id == s && answer.answer_text == s_choice_text}.pluck(:user_id).uniq.size
+            user_count = user_count + effictive_users.select{|answer| answer.exercise_choice_id == s && answer.answer_text == s_choice_text}.distinct.size
             # user_count = user_count + effictive_users.select{|answer| answer.exercise_choice_id == s && answer.answer_text == s_choice_text}.size
             answer_percent = ((effictive_users_count == 0) ? 0.0 : (user_count / effictive_users_count.to_f ).round(3))
             answer_option = {
@@ -193,18 +193,21 @@ module ExercisesHelper
             standard_answer_count += 1
           end
         else
-          cycled_stand = {}
-          null_stand_text.each_with_index do |stand, index|
+          # cycled_stand = {}
+          null_stand_text.uniq.each_with_index do |stand, index|
             user_count = 0
-            if cycled_stand.length > 0 && cycled_stand.keys.include?(stand)
-              cycled_stand.store(stand, cycled_stand["#{stand}"])
-              user_count = cycled_stand["#{stand}"]
-              calculate_user_count = 0
-            else
-              user_count = user_count + effictive_users.select{|answer| answer.answer_text == stand }.pluck(:user_id).uniq.size
-              cycled_stand.store(stand, user_count)
-              calculate_user_count = user_count
-            end
+            # if cycled_stand.length > 0 && cycled_stand.keys.include?(stand)
+            #   cycled_stand.store(stand, cycled_stand["#{stand}"])
+            #   user_count = cycled_stand["#{stand}"]
+            #   calculate_user_count = 0
+            # else
+            #   user_count = user_count + effictive_users.select{|answer| answer.answer_text == stand }.pluck(:user_id).uniq.size
+            #   cycled_stand.store(stand, user_count)
+            #   calculate_user_count = user_count
+            # end
+            user_count = user_count + effictive_users.select{|answer| answer.answer_text == stand }.distinct.size
+            # cycled_stand.store(stand, user_count)
+            # calculate_user_count = user_count
 
             answer_percent = ((effictive_users_count == 0) ? 0.0 : (user_count / effictive_users_count.to_f ).round(3))
             answer_option = {
@@ -215,7 +218,7 @@ module ExercisesHelper
               :right_answer => true
             }
             question_answer_infos.push(answer_option)
-            all_user_count += calculate_user_count
+            all_user_count += user_count
             standard_answer_count += 1
           end
         end