views.py 文件源码

def get_context_data(self, **kwargs):
        context = super(CreateSnapshotView, self).get_context_data(**kwargs)
        context['volume_id'] = self.kwargs['volume_id']
        args = (self.kwargs['volume_id'],)
        context['submit_url'] = reverse(self.submit_url, args=args)
        try:
            volume = cinder.volume_get(self.request, context['volume_id'])
            if (volume.status == 'in-use'):
                context['attached'] = True
                context['form'].set_warning(_("This volume is currently "
                                              "attached to an instance. "
                                              "In some cases, creating a "
                                              "snapshot from an attached "
                                              "volume can result in a "
                                              "corrupted snapshot."))
            context['usages'] = quotas.tenant_limit_usages(self.request)
        except Exception:
            exceptions.handle(self.request,
                              _('Unable to retrieve volume information.'))
        return context