On 16 Jan 2009, at 15:02, Vikrant wrote:
> > I have a model Model1 with the before_destory() method defined as > below. > > def before_destroy > self.status = 'deleted' > self.save! > return false #don't want to delete the row. > end > > But in the database the change in the status column doesn't get > changed to 'deleted' > > I then tried this > > def before_destory > self.status = 'deleted' > self.save! > n = Model1.find self.id #Set the breakpoint here in NetBeans IDE. > return false > end Have you tried looking at development log to see exactly what queries run ? Fred > > > I then checked the value of n.status and it was 'deleted', but in the > database it was still 'active' (the other value). > > I also tried this > > Controller1 < ApplicationController > def action1 > m = Model1.find params[:id] > m.destroy > n = Model1.find m.id #Set the breakpoint here > end > end > > Even here the value of n.status was 'deleted', but in the database it > was the previous value. (Showed this example just to show that even in > controller I'm getting the same). > > After a bit of of looking through Rails API, I found out that model > callbacks like before_destroy are transactional. so they get rolled > back if any error raised. So I tried this. > > def before_destroy > self.status = 'deleted' > self.save! > raise self.errors.inspect > return false > end > > The above code made sure that there are no errors attached, so > self.save! should run fine (or at least it should raise error!). > So I don't know now, why my changes are not being written to the > database. Is it because I'm returning false from the before_destroy() > method? If yes, then how can I save the changes made in before_destroy > () callback and also the row doesn't get deleted? > > I'm using SQLite and I've also noticed that a 'development-journal' > file get created, while I've paused the code somewhere in between the > before_destroy() method. (That may be the transaction thing, I guess.) > > I'm using - > Rails 2.2.2 > SQLite 3.5.9 > Ubuntu 8.10 (Intrepid) x64 > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
