Tag "relations"

Hand over model instance relations to another instance of the same model

If you have a model instance you want to merge into another, it's handy to hand over all the relations into the model you want to merge into, so the deletion won't trigger cascading deletions from other tables. You can pass an `Iterable` of the same objects (a.k.a `QuerySet`) to the model, and then process it with the new model's `pk`.