From 826e49cfbe9589e600e652c31eb62954dcc86061 Mon Sep 17 00:00:00 2001
From: Anton Chuchkalov <a2new@yandex.ru>
Date: Wed, 5 Apr 2017 22:19:05 +0300
Subject: use formatted number as schema version

---
 activerecord/lib/active_record/schema_dumper.rb | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'activerecord/lib')

diff --git a/activerecord/lib/active_record/schema_dumper.rb b/activerecord/lib/active_record/schema_dumper.rb
index 2bbfd01698..657bd43b86 100644
--- a/activerecord/lib/active_record/schema_dumper.rb
+++ b/activerecord/lib/active_record/schema_dumper.rb
@@ -47,8 +47,16 @@ module ActiveRecord
         @options = options
       end
 
+      # turns 20170404131909 into "2017_04_04131909"
+      def formatted_version
+        return "" unless @version
+        stringified = @version.to_s
+        return stringified unless stringified.length == 14
+        stringified.insert(4, "_").insert(7, "_").insert(10, "_")
+      end
+
       def header(stream)
-        define_params = @version ? "version: #{@version}" : ""
+        define_params = @version ? "version: #{formatted_version}" : ""
 
         stream.puts <<HEADER
 # This file is auto-generated from the current state of the database. Instead
-- 
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