Initial commit

db/migrate/20180403145234_change_bid_to_rid.rb

@@ -0,0 +1,8 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+class ChangeBidToRid < ActiveRecord::Migration[4.2]
+  def change
+    rename_column :withdraws, :bid, :rid
+  end
+end