2008/10/2 David Hall <[EMAIL PROTECTED]>: > Marek Stępniowski wrote: >> How does django-reversion deal with relationships between Django models? >> >> Version-controlling relationships between entities is an Achilles heel >> of such applications. I have read django-reversion docs on google code >> wiki, but I couldn't find any information on that matter. >> > This is best explained by example. > > Let's say you have two models, Foo and Bar, both under version control. > > >>> class Bar(models.Model): > ... pass > ... > >>> class Foo(models.Model): > ... bar = models.ForeignKey(Bar) > > If you save an instance of Foo, then the primary key of the referenced > Bar is stored in the version. Thus, rolling back a version of Foo will > not roll back the version of Bar. > > However, Reversion allows you to create revisions that group related > changes together: > > >>> @create_revision > ... def save_relations(foo, bar): > ... foo.save() > ... bar.save() > > This will group the two changes together. They can then be rolled back > as a single unit.
Thanks for reply. Your approach is simple and it works. I like it! :-) Cheers, -- Marek Stępniowski http://stepniowski.com --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
