diff options
Diffstat (limited to 'activesupport/lib/active_support/concern.rb')
| -rw-r--r-- | activesupport/lib/active_support/concern.rb | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/concern.rb b/activesupport/lib/active_support/concern.rb index eeeba60839..b6ae86b583 100644 --- a/activesupport/lib/active_support/concern.rb +++ b/activesupport/lib/active_support/concern.rb @@ -98,6 +98,12 @@ module ActiveSupport # include Bar # works, Bar takes care now of its dependencies # end module Concern + class MultipleIncludedBlocks < StandardError #:nodoc: + def initialize + super "Cannot define multiple 'included' blocks for a Concern" + end + end + def self.extended(base) #:nodoc: base.instance_variable_set("@_dependencies", []) end @@ -117,6 +123,8 @@ module ActiveSupport def included(base = nil, &block) if base.nil? + raise MultipleIncludedBlocks if instance_variable_defined?("@_included_block") + @_included_block = block else super |