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-rw-r--r--activesupport/lib/active_support/core_ext/module/delegation.rb14
-rw-r--r--activesupport/lib/active_support/core_ext/module/deprecation.rb4
2 files changed, 16 insertions, 2 deletions
diff --git a/activesupport/lib/active_support/core_ext/module/delegation.rb b/activesupport/lib/active_support/core_ext/module/delegation.rb
index e608eeaf42..c0828343d8 100644
--- a/activesupport/lib/active_support/core_ext/module/delegation.rb
+++ b/activesupport/lib/active_support/core_ext/module/delegation.rb
@@ -112,6 +112,20 @@ class Module
# end
#
# Foo.new.zoo # returns nil
+ #
+ # If the delegate object is not +nil+ or +false+ and the object doesn't
+ # respond to the delegated method it will raise an exception.
+ #
+ # class Foo
+ # def initialize(bar)
+ # @bar = bar
+ # end
+ #
+ # delegate :name, to: :@bar
+ # end
+ #
+ # Foo.new("Bar").name # raises NoMethodError: undefined method `name'
+ #
def delegate(*methods)
options = methods.pop
unless options.is_a?(Hash) && to = options[:to]
diff --git a/activesupport/lib/active_support/core_ext/module/deprecation.rb b/activesupport/lib/active_support/core_ext/module/deprecation.rb
index cc45cee5b8..d873de197f 100644
--- a/activesupport/lib/active_support/core_ext/module/deprecation.rb
+++ b/activesupport/lib/active_support/core_ext/module/deprecation.rb
@@ -14,8 +14,8 @@ class Module
# method where you can implement your custom warning behavior.
#
# class MyLib::Deprecator
- # def deprecation_warning(deprecated_method_name, message, caller_backtrace)
- # message = "#{method_name} is deprecated and will be removed from MyLibrary | #{message}"
+ # def deprecation_warning(deprecated_method_name, message, caller_backtrace = nil)
+ # message = "#{deprecated_method_name} is deprecated and will be removed from MyLibrary | #{message}"
# Kernel.warn message
# end
# end