Contents

module Zuul
  module ValidRoles
    def self.included(base)
      base.extend ClassMethods
    end

    module ClassMethods
      def valid_roles(*roles)
        attr_protected :role
        write_inheritable_attribute(:roles, roles)
        include InstanceMethods
      end
    end

    module InstanceMethods
      def self.included(base)
        base.read_inheritable_attribute(:roles).each do |role|
          class_eval <<-CODE
            def #{role}?
              self.role.to_sym == :#{role}
            end
          CODE
        end
      end

      def role
        role_name = read_attribute(:role)
        role_name && role_name.to_sym
      end

      def role=(role)
        return unless self.class.read_inheritable_attribute(:roles).include?(role.to_sym)
        write_attribute(:role, role.to_s)
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
zuul-0.1.1	lib/zuul/valid_roles.rb
zuul-0.1.0	lib/zuul/valid_roles.rb