on-nullable field 'order' to mapping without a default

[ACPK]

No description provided.

[bfirsh]

Could you explain in more detail what this is about?

[ivanff]

self.swap(self.get_ordering_queryset()
.filter(**{self.order_field_name + '__lt': getattr(self, self.order_field_name)})
.order_by('-' + self.order_field_name))

if all order fields is 0, qs is blank, and all methods up and down not work

[shuckc]

Yes it's a known issue that your models need to be ordered from the start. If you retrospectively add ordering using makemigrations/migrate to a model with existing instances, they all have order=0. There is an open pull request to add a management command to manage.py to resolve this.

[alstr]

Is this any closer to being resolved?

[shuckc]

Yes - the admin tool to re-order an existing model is now merged #188 and released in version 3.4.2