I have the following 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')
Using class-based view of Django and the Revision Context Manager
, I can create revision anytime I create a new relationship between 2 contacts
# 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())
But only one of the contacts gets the revision (the first) and the comment coming with it. How Revision Context Manager
can be used to create both revisions ?
Probably a bit late, but I think with a recent version of reversion you can follow the relations:
Add this line to the end of your model:
reversion.register(Relationship, follow=['from_contact', 'link', 'to_contact'])
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