1 files changed, 11 insertions, 0 deletions
diff --git a/railties/lib/rails/generators/active_record/migration/templates/migration.rb b/railties/lib/rails/generators/active_record/migration/templates/migration.rb
new file mode 100644
index 0000000000..bbb7c53d86
--- /dev/null
+++ b/railties/lib/rails/generators/active_record/migration/templates/migration.rb
@@ -0,0 +1,11 @@
+class <%= migration_class_name %> < ActiveRecord::Migration
+  def self.up<% attributes.each do |attribute| %>
+    <%= migration_action %>_column :<%= table_name %>, :<%= attribute.name %><% if migration_action == 'add' %>, :<%= attribute.type %><% end -%>
+  <%- end %>
+  end
+
+  def self.down<% attributes.reverse.each do |attribute| %>
+    <%= migration_action == 'add' ? 'remove' : 'add' %>_column :<%= table_name %>, :<%= attribute.name %><% if migration_action == 'remove' %>, :<%= attribute.type %><% end -%>
+  <%- end %>
+  end
+end