On 08.02.2012, at 13:39, Colin Law wrote: > On 8 February 2012 07:12, Bob Smith <bsm...@gmail.com> wrote: >> I need a way to set a counter that will show how many of the model >> have been created and put this in each instance. This will allow me to >> use the record number as an input to another field before id is set. >> After things are settled, the real id number can be substituted for >> the counter. > > If you do that and two users come along at the same time and make new > objects then they will both get the same number. Can you not just use > a before_save filter to set the field? If you think not can you > explain what you are trying to do (and why) in more detail as there is > almost certainly a better solution.
I think actually he asked about something counter-caching solution for stand-alone model/table. Good question, for the best approach it has to be realized on a database level. The second approach is to build additional caching table to keep counter values for anything you want. The last one is not so elegant. -- 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.
