diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/module/delegation.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/module/delegation.rb | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/core_ext/module/delegation.rb b/activesupport/lib/active_support/core_ext/module/delegation.rb index 3dde87ac2e..1aa72da743 100644 --- a/activesupport/lib/active_support/core_ext/module/delegation.rb +++ b/activesupport/lib/active_support/core_ext/module/delegation.rb @@ -1,4 +1,8 @@ class Module + # Error generated by +delegate+ when a method is called on +nil+ and +allow_nil+ + # option is not used. + class DelegationError < NoMethodError; end + # Provides a +delegate+ class method to easily expose contained objects' # public methods as your own. # @@ -176,7 +180,7 @@ class Module end # end EOS else - exception = %(raise "#{self}##{method_prefix}#{method} delegated to #{to}.#{method}, but #{to} is nil: \#{self.inspect}") + exception = %(raise DelegationError, "#{self}##{method_prefix}#{method} delegated to #{to}.#{method}, but #{to} is nil: \#{self.inspect}") module_eval(<<-EOS, file, line - 2) def #{method_prefix}#{method}(#{definition}) # def customer_name(*args, &block) |