I want a DataFile to have at most one MessageDigest of a certain code. I've tried a bunch of combinations of :key and :unique_key etc but i cant seem to get it right.
if i were to do this in a SQL DDL i'd make data_file_id and code a composite key. how can i make it work in datamapper? example models: class DataFile include DataMapper::Resource property :id, Serial, :key => true property :contents, Text has 0..n, :message_digests end class MessageDigest include DataMapper::Resource property :code, Enum[:md5, :sha1, :crc32] property :value, String, :required => true, :length => 255 belongs_to :data_file end -- You received this message because you are subscribed to the Google Groups "DataMapper" group. To post to this group, send email to datamap...@googlegroups.com. To unsubscribe from this group, send email to datamapper+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/datamapper?hl=en.
