On 30/05/2006, at 4:43 PM, Shaun Cutts wrote:
> > Ian, > > Thanks. Your code looks concise, but a bit mysterious (maybe it's > the time > of night). Is this a way to get extra events triggered in a db > transaction, > or is it just inside a single web request? > just inside a single web request. have a look at models/base.py def save() it does... signal the pre-save's do the actual save call transaction.commit_unless_managed() signals the post_save > As far as I can tell, you don't seem to be insisting on having one > transaction; if you are, are you using psychopg backend? How is it > able to > get the ids of previously created objects (in the same > transaction)? I'd > assumed you needed to pre-increment the sequence to generate a new > id by > hand, then plug this value in on insert. nope.. I'm not caring.. but I could be easily enough by putting my logic where I actually call the save() function. > > Ah -- ok, in your case you may be in one transaction, but you don't > need the > id of the thing created (witness: if instance.id == None: ... :)) i'm doing it pre-save.. and I need to determine if it is a new record or not. if I hooked the function to the post-save I would have got the 'id' field, but I don't think I could determine if it was a new record or not. > > Some background: I'm trying to automate bulk load of data from web- > crawlers. > These loads happen often enough that, if I don't enforce atomicity, > I'll > have a good chance of ending up with a mess in the db when one gets > interrupted for some random reason. > understood... you should try and use the post-save with transactions I'm guessing. regards ian > - Shaun > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django developers" group. To post to this group, send email to django-developers@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-developers -~----------~----~----~----~------~----~------~--~---
