再次测试填空题

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}.distinct.size
+            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}.size
             answer_percent = ((effictive_users_count == 0) ? 0.0 : (user_count / effictive_users_count.to_f ).round(3))
             answer_option = {
@@ -205,7 +205,7 @@ module ExercisesHelper
             #   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
+            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