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Contents
module HyperResource::Modules
module Utils
def self.included(base)
base.extend(ClassMethods)
end
module ClassMethods
## Inheritable class attribute, kinda like in Rails.
def class_attribute(*names)
names.map(&:to_sym).each do |name|
instance_eval <<-EOT
def #{name}=(val)
@#{name} = val
end
def #{name}
return @#{name} if defined?(@#{name})
return superclass.#{name} if superclass.respond_to?(:#{name})
nil
end
EOT
end
end
## Instance attributes which fall back to class attributes.
def fallback_attribute(*names)
names.map(&:to_sym).each do |name|
class_eval <<-EOT
def #{name}=(val)
@#{name} = val
end
def #{name}
return @#{name} if defined?(@#{name})
return self.class.#{name} if self.class.respond_to?(:#{name})
nil
end
EOT
end
end
end # module ClassMethods
end
end
Version data entries
5 entries across 5 versions & 1 rubygems