Traited helps you doing configuration similar to class variables.
It's built on a simple Hash, where keys are objects and the values the configuration. By using {Traited#ancestral_trait} you will get nicely inherited configuration, where keys later in the ancestors will take precedence.
@example usage
class Foo include Innate::Traited trait :hello => 'Hello' def initialize trait :hello => 'World!' end def show [class_trait[:hello], trait[:hello], ancestral_trait[:hello]] end end Foo.trait[:hello] # => "Hello" foo = Foo.new foo.trait[:hello] # => "World!" foo.show # => ["Hello", "World!", "World!"]
Builds a trait from all the ancestors, closer ancestors overwrite distant ancestors
class Foo
include Innate::Traited trait :one => :eins, :first => :erstes
end
class Bar < Foo
trait :two => :zwei
end
class Foobar < Bar
trait :three => :drei, :first => :overwritten
end
Foobar.ancestral_trait # => {:three => :drei, :two => :zwei, :one => :eins, :first => :overwritten}
# File lib/innate/traited.rb, line 65 def ancestral_trait klass = self.kind_of?(Module) ? self : self.class ANCESTRAL_TRAITS[klass] ||= each_ancestral_trait({}){|hash, trait| hash.update(trait) } end
# File lib/innate/traited.rb, line 71 def ancestral_trait_values(key) klass = self.kind_of?(Module) ? self : self.class cache = ANCESTRAL_VALUES[klass] ||= {} cache[key] ||= each_ancestral_trait([]){|array, trait| array << trait[key] if trait.key?(key) } end
trait for self.class if we are an instance
# File lib/innate/traited.rb, line 86 def class_trait respond_to?(:ancestors) ? trait : self.class.trait end
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