pageadmin.py 文件源码

def revision_view(self, request, object_id, version_id, extra_context=None):
        if not is_installed('reversion'):
            return HttpResponseBadRequest('django reversion not installed')

        if not self.has_change_permission(request, Page.objects.get(pk=object_id)):
            raise PermissionDenied

        page = get_object_or_404(self.model, pk=object_id)
        if not page.publisher_is_draft:
            page = page.publisher_draft
        if not page.has_change_permission(request):
            return HttpResponseForbidden(force_text(_("You do not have permission to change this page")))
        try:
            version = Version.objects.get(pk=version_id)
            clean = page._apply_revision(version.revision, set_dirty=True)
            if not clean:
                messages.error(request, _("Page reverted but slug stays the same because of url collisions."))
            with create_revision():
                adapter = self.revision_manager.get_adapter(page.__class__)
                self.revision_context_manager.add_to_context(self.revision_manager, page, adapter.get_version_data(page))
                self.revision_context_manager.set_comment(_("Reverted to previous version, saved on %(datetime)s") % {"datetime": localize(version.revision.date_created)})
        except IndexError as e:
            return HttpResponseBadRequest(e.message)

        return HttpResponseRedirect(admin_reverse('cms_page_change', args=(quote(object_id),)))