1

lib/tasks/statistic_subject_info.rake

@@ -9,9 +9,9 @@ namespace :subjects do
         "school_used_count, created_at, updated_at"
     subjects.find_in_batches(batch_size: 50) do |s|
       Parallel.each_with_index(s, in_processes: 4) do |subject, index|
-        if subject == s.first
+        if defined?(buffer_size).nil?
-          buffer_size == 0
+          buffer_size = 0
-          str == ""
+          str = ""
         end
         buffer_size += 1
         str += ", " unless str.empty?