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-rw-r--r--actionpack/lib/abstract_controller/base.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/actionpack/lib/abstract_controller/base.rb b/actionpack/lib/abstract_controller/base.rb
index 07ff5ad9f3..0951267fea 100644
--- a/actionpack/lib/abstract_controller/base.rb
+++ b/actionpack/lib/abstract_controller/base.rb
@@ -1,3 +1,4 @@
+require 'erubis'
require 'active_support/configurable'
require 'active_support/descendants_tracker'
require 'active_support/core_ext/module/anonymous'
@@ -18,6 +19,7 @@ module AbstractController
include ActiveSupport::Configurable
extend ActiveSupport::DescendantsTracker
+ undef_method :not_implemented
class << self
attr_reader :abstract
alias_method :abstract?, :abstract