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Versions: 14
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Stored size: 880 Bytes
Contents
module ClassyEnum
module Predicate
# Define attribute methods like two?
def self.define_predicate_method(klass, enum)
klass.base_class.class_eval do
define_method "#{enum}?", lambda { attribute?(enum) }
end
end
protected
# Determine if the enum attribute is a particular member.
#
# ==== Example
# # Create an Enum with some elements
# class Breed < ClassyEnum::Base
# end
#
# class Breed::GoldenRetriever < Breed; end
# class Breed::Snoop < Breed; end
#
# # Create an ActiveRecord class using the Breed enum
# class Dog < ActiveRecord::Base
# classy_enum_attr :breed
# end
#
# @dog = Dog.new(:breed => :snoop)
# @dog.breed.snoop? # => true
# @dog.breed.golden_retriever? # => false
def attribute?(attribute)
self == attribute
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems