Thanks Fred. What do you mean by 'use a unique index'?
What I am concerned about is logical uniqueness, i.e., persist only data objects with a unique combination of attributes. Thanks, Grar On Feb 22, 3:54 pm, Frederick Cheung <[email protected]> wrote: > On Feb 22, 8:52 pm, Grary <[email protected]> wrote: > > > Hi, > > > From a model class, what is the standard way of ensuring uniqueness > > across multiple columns (attributes) simultaneously? > > > In other words, I want to ensure only unique "rows" are persisted to > > storage. I feel like there must be a straightforward way to do this. > > Any suggestions? > > validate_uniqueness' scope option does this (but you should really be > using a unique index as well.) > > Fred > > > Thanks, > > > Grar -- 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 [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
