Thanks so much for taking the time to consider this Fred. I got it working, thanks to some patient help from several complete strangers. The generosity inside online communities is a wonderful thing.
I had to add both duration_minutes and duration_hours to the model so the callback could access them. I had initially been thinking of them as just "disposable" items, not worth saving. Now I'm glad I did because, to answer your question, yes we are just as likely to change the duration of an assignment as we are to change its start time. Lots of little last minute changes in our shop. :( Once those attributes became available to the model, I could write a before_save callback like this: def create_end self.ends_at = starts_at.advance(:hours => duration_hours, :minutes => duration_minutes) end So thanks again for your help. I learned some interesting things. Not having worked with model callback methods before, I had not grasped that the params method was not available to models. Thanks for that insight. Steve --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
