Enforce better encapsulation by returning self from commands.
Thanks to James Ladd for the inspiration.
Provide a feature like the Forwardable library, but set the return value to self.
It provides a class level "command" method to do message forwarding.
class Person
extend Direction
command [:print_address] => :home
attr_accessor :home
end
class Home
def print_address(template)
template << "... the address.."
end
end
template = STDOUT
person = Person.new
person.home = Home.new
#commands won't leak internal structure and return the receiver of the command
person.print_address(template) #=> person
This will define methods on instances that forward to the provided receiver while enforcing encapsulation of the relationship between objects.
Add this line to your application's Gemfile:
gem 'direction'
And then execute:
$ bundle
Or install it yourself as:
$ gem install direction
Special thanks to Aaron Kromer and Ken Collins for their thoughts and code.
- Fork it ( http://github.com/saturnflyer/direction/fork )
- Create your feature branch (
git checkout -b my-new-feature
) - Commit your changes (
git commit -am 'Add some feature'
) - Push to the branch (
git push origin my-new-feature
) - Create new Pull Request