rails rake gems:install error：version_requirements

 

if Gem::VERSION >= "1.3.6"
  module Rails
    class GemDependency
      def requirement
        r = super
        (r == Gem::Requirement.default) ? nil : r
      end
    end
  end
end

 

 

 

http://makandra.com/notes/1109-fixing-undefined-local-variable-or-method-version_requirements-for-rails-gemdependency-0x-nameerror