From 10884221b5c0caaa2c73a46d00a1f749469a3884 Mon Sep 17 00:00:00 2001
From: cxt <pinecxt@163.com>
Date: Thu, 12 Oct 2017 18:35:55 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B5=8B=E9=AA=8C=E5=8E=86=E5=8F=B2=E6=95=B0?=
 =?UTF-8?q?=E6=8D=AE=E7=9A=84=E9=A2=98=E5=8F=B7=E8=BF=81=E7=A7=BB?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...71012101648_migrate_exercise_question_num.rb | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 db/migrate/20171012101648_migrate_exercise_question_num.rb

diff --git a/db/migrate/20171012101648_migrate_exercise_question_num.rb b/db/migrate/20171012101648_migrate_exercise_question_num.rb
new file mode 100644
index 000000000..7db6136f0
--- /dev/null
+++ b/db/migrate/20171012101648_migrate_exercise_question_num.rb
@@ -0,0 +1,17 @@
+class MigrateExerciseQuestionNum < ActiveRecord::Migration
+  def up
+    count = Exercise.all.count / 30 + 2
+    transaction do
+      for i in 1 ... count do i
+        Exercise.page(i).per(30).each do |exercise|
+          exercise.exercise_questions.reorder("created_at asc").each_with_index do |question, j|
+            question.update_column('question_number', j + 1)
+          end
+        end
+      end
+    end
+  end
+
+  def down
+  end
+end