Question

我有以下models.py

class Contact(models.Model):
    pass

class Link(models.Model):
    pass

class Relationship(models.Model):
    # Documentation
    __doc__ = _(u'Stores a relationship between 2 contacts.')
    # Attributes
    from_contact = models.ForeignKey(Contact, related_name='from_contacts', verbose_name=_(u'first contact'), help_text=_(u'The first contact implicated by the relationship.'))
    link = models.ForeignKey(Link, related_name=u'relationships', verbose_name=_(u'relationship link'), help_text=_(u'The relationship link between both contacts.'))
    to_contact = models.ForeignKey(Contact, related_name='to_contacts', verbose_name=_(u'second contact'), help_text=_(u'The second contact implicated by the relationship.'))

    # Meta-data
    class Meta:
        verbose_name = u'Relationship'
        verbose_name_plural = u'Relationships'
        unique_together = ('from_contact', 'link', 'to_contact')

使用Django和Revision Context Manager的基于类的视图，我可以在2个联系人之间创建新关系的任何时候创建修订

# part of my views.py
class RelationshipCreateView(LoginRequiredMixin, CreateView):
    template_name = u'frontend/relationships/relationship-create.html'
    model = Relationship
    form_class = RelationshipForm

    def get_success_url(self):
        return reverse_lazy('contact-detail', kwargs={'contact_pk': self.kwargs['contact_pk']})

    def form_valid(self, form):
        contact = Contact.objects.get(pk=self.kwargs['contact_pk'])
        link = form.cleaned_data['link']
        other = form.cleaned_data['other']
        inverse = form.cleaned_data['inverse_relationship']
        relationship = None
        if not inverse:
            relationship = Relationship(
                from_contact=contact,
                link=link,
                to_contact=other
            )
        else:
            relationship = Relationship(
                from_contact=other,
                link=link,
                to_contact=contact
            )
        with reversion.create_revision():
            relationship.save()
            reversion.set_comment(_(u'A relationship has been added between %(from)s and %(to)s' % {'from': relationship.from_contact, 'to': relationship.to_contact}))
        return HttpResponseRedirect(self.get_success_url())

但是只有其中一个联系人获得了修订（第一个）和随之而来的评论。 Revision Context Manager如何用于创建两个版本？

Answer 1

可能有点晚了，但我认为最新版本的回归可以跟随关系：

将此行添加到模型的末尾：

reversion.register(Relationship, follow=['from_contact', 'link', 'to_contact'])

Answer 2

Django Model Utils是跟踪模型和模型字段更改以及执行许多其他非常酷的工作的新的最佳实践方法。

django-reversion和相关模型

2 个答案: