How to list enum values in DataMapper

The Ruby ORM DataMapper as a Enum property which is really handy, but you often want to list the available options in for example a form. Unfortunately it's not well documented, but this gist shows you how:

                          
                                class Entity
  include DataMapper::Resource
  property :enum_property, Enum[:a, :b, :c]
end
 
Entity.enum_property.options[:flags] #=> [:a, :b, :c]
# or
Entity.enum_property.flag_option.values #=> [:a, :b, :c]

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Posted at 2011-05-17 02:53

Carl Hörberg on development

How to list enum values in DataMapper