1 files changed, 16 insertions, 1 deletions
diff --git a/railties/lib/rails_generator/commands.rb b/railties/lib/rails_generator/commands.rb
index d258aeaa0a..59af7308fe 100644
--- a/railties/lib/rails_generator/commands.rb
+++ b/railties/lib/rails_generator/commands.rb
@@ -57,6 +57,17 @@ module Rails
         end
 
         protected
+          def current_migration_number
+            Dir.glob("#{RAILS_ROOT}/#{@migration_directory}/[0-9]*_*.rb").inject(0) do |max, file_path|
+              n = File.basename(file_path).split('_', 2).first.to_i
+              if n > max then n else max end
+            end
+          end
+             
+          def next_migration_number
+            current_migration_number + 1
+          end
+               
           def migration_directory(relative_path)
             directory(@migration_directory = relative_path)
           end
@@ -70,7 +81,11 @@ module Rails
           end
 
           def next_migration_string(padding = 3)
-            Time.now.utc.strftime("%Y%m%d%H%M%S")
+            if ActiveRecord::Base.timestamped_migrations
+              Time.now.utc.strftime("%Y%m%d%H%M%S")
+            else
+              "%.#{padding}d" % next_migration_number
+            end
           end
 
           def gsub_file(relative_destination, regexp, *args, &block)