Read, re-read and then ask a question ;-). So I'm answering my question myself: Use the TransactionMiddleware to tie together the two updates.
On Apr 29, 3:20 pm, mettwoch <mettw...@pt.lu> wrote: > Hi, > > I'm rather new to Django (and webapp development) and I'd appreciate > any advice on the following problem. > > I've a model named 'document' that can hold any kind of documents like > customer invoices, supplier invoices, goods returned, ..., but I've to > ensure that the customer invoices be numbered in sequence regardless > of the fact that there may be one customer invoice entered in the > system and then some supplier invoices and then again some customer > invoices. I've also a model holding the 'document type'. That model > could hold an Integer Field that is incremented at the creation of > every document type separately, but that has to be done in a > transaction together with the document creation: > > begin-transaction > document_type['customer invoice'].number += 1 > d = document(number = document_type['customer invoice'].number, > document_type = 'customer invoice', ... > ... > end-transaction > > Is that kind of mechanism working? Do you have any other suggestion? > > Kind regards > Marc --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
