Created
August 17, 2012 15:04
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class AttributeAccessor < Module | |
def initialize(name) | |
@name = name | |
@name_ivar = "@#{@name}" | |
end | |
def included(model) | |
super | |
define_accessors | |
end | |
private | |
def define_accessors | |
define_writer | |
define_reader | |
end | |
def define_writer | |
name_ivar = @name_ivar | |
define_method("#{@name}=") do |value| | |
instance_variable_set(name_ivar, value) | |
end | |
end | |
def define_reader | |
name_ivar = @name_ivar | |
define_method(@name) do | |
instance_variable_get(name_ivar) | |
end | |
end | |
end | |
class Book | |
include AttributeAccessor.new(:title) | |
def title | |
"#{super} + super works!" + "#{@title}" | |
end | |
end | |
book = Book.new | |
book.title = "Module Subclassing Guide" | |
puts book.title |
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Now thats awesome.