http://talklikeaduck.denhaven2.com/articles/tag/referential_integrity en-us 40 In Ruby, it's not the dog, it's the tricks! Josh Susser just posted a new Rails plugin <a href="http://blog.hasmanythrough.com/2007/7/14/validate-your-existence">which adds a validates_existence_of method to ActiveRecord::Base.</a>. The idea is that beyond validates_presence_of, which simply checks that a foreign key field is non-nil, or validates_associated which <strong>validates</strong> the model referenced by a foreign key, validate_existence ensures that the referenced model <strong>exists</strong> in the database, no more no less. <p>It&#8217;s brand new, but it sure looks like a nice idea.</p> Sat, 14 Jul 2007 15:10:00 -0400 urn:uuid:55d910e3-af16-4d61-9fbe-26a3c0ecba51 Rick DeNatale http://talklikeaduck.denhaven2.com/articles/2007/07/14/active-record-and-referential-integrity rails activerecord referential_integrity http://talklikeaduck.denhaven2.com/articles/trackback/442