Dear List, This may not be rails unique but what is the best practice to validate the uniqueness of has_many associations. In particular the models are
class Word end class PhraseComponent belongs_to :word belongs_to :dictionary_entry acts_as_list :scope => :dictionary_entry end class DictionaryEntry has_many :phrase_components has_many :words, :through => :phrase_components end Dictionary entries (words and phrases) are composed of words (which are uniq) and I want to check the same phrase occurs only once in the DictionaryEntry table. Is there a better or more efficient way to do this than create and update a footprint of the word associations on dictionary entries? This means I would have a string field in the dictionary_entries table which is a concatenation of the associated words and would check the uniquness of that. If we generalize the problem, we need to assure uniqueness of lists of arbitrary objects (where a list is via a join table), in that case the only representation that I can create on the list is the concatenation of ids of list items and check the uniqueness of this? I begin to think there must be a more canonical way to handle this. Any help appreciated Viktor I found someone asking the same question but no reply followed. http://groups.google.com/group/rubyonrails-talk/browse_thread/thread/e4b61e90dfaa7a8/4f6e24aa5863585a?hl=en&lnk=gst&q=has_many+uniqueness#4f6e24aa5863585a --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
