search for: asset_categories

...gory. Finally, an asset can be shared across many categories. So my question is how do you check the uniqueness across a join table? This does not compile.... has_and_belongs_to_many :categories, :foreign_key => ''asset_id'' validates_uniqueness_of :data, :scope => ''asset_categories.category_id'' Thanks, Mark -- -------------------------------------------------------------------- I am Mark Daggett and I approve this message.