Contents

module Troo
  class NullEntity
    def default?
      true
    end
  end

  class SetDefault
    class << self
      def for(entity)
        new(entity).set_default!
      end
    end

    def initialize(entity)
      @entity = entity
    end

    def set_default!
      return false if already_default?
      unset_default
      set_new_default
      entity
    end

    private
    attr_reader :entity

    def set_new_default
      entity.update(default: true)
    end

    def unset_default
      entity.class.update(default: false)
    end

    def already_default?
      entity.default?
    end

    def entity
      return NullEntity.new if @entity.nil?
      @entity
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
troo-0.0.7	lib/troo/actions/set_default.rb
troo-0.0.6	lib/troo/actions/set_default.rb
troo-0.0.5	lib/troo/actions/set_default.rb
troo-0.0.4	lib/troo/actions/set_default.rb