Contents

require "active_support/core_ext/module/aliasing"

# *Correct* `alias_method_chain_once` implementation
class Module
  def alias_method_chain_once(target, feature)
    aliased_target, punctuation = target.to_s.sub(/([?!=])$/, ''), $1
    without_method = "#{aliased_target}_without_#{feature}#{punctuation}"

    # `method_defined?` matches public and protected methods,
    # also `*_method_defined?` family of methods is the portable
    # way to check for method existence, while `public_methods.include?`
    # will work either on 1.8 or 1.9 (depending on where symbol or string
    # is provided as method name)
    unless method_defined?(without_method) ||
            private_method_defined?(without_method)
      alias_method_chain(target, feature)
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
dolzenko-0.0.27	lib/dolzenko/alias_method_chain_once.rb
dolzenko-0.0.26	lib/dolzenko/alias_method_chain_once.rb
dolzenko-0.0.25	lib/dolzenko/alias_method_chain_once.rb