导出数据空行

app/controllers/admins/shixun_settings_controller.rb

@@ -115,10 +115,13 @@ class Admins::ShixunSettingsController < Admins::BaseController
       sheet1[count_row, 5] = shixun.user.show_real_name
       sheet1[count_row, 6] = shixun.user.school_name
       sheet1[count_row, 7] = shixun.user.identity
-      shixun.challenges.each do |challenge|
+      challenge_count = shixun.challenges.count
+      shixun.challenges.each_with_index do |challenge, index|
         sheet1[count_row, 8] = "第#{challenge.position}关"
         sheet1[count_row, 9] = challenge.subject
-        count_row += 1
+        if index + 1 != challenge_count
+          count_row += 1
+        end
       end
       count_row += 1
     end