[Django]-Django – bulk update arrayfield rows postgres

I don’t think its possible to do currently, I think the best you can do is to do it is to iterate over the models.

for model in ModelA.objects.all():
    for val in model_a.colA:
        val = val + 1
    model.save()

You can do this as an atomic transaction as well if you wish.. Although it may be worth considering if this field really should be an array field.

You can try using the django-bulk-update package. Although I’m not sure whether it can handle ArrayField

Why not do a database migration? Django’s database migration system should allow you to do this easily, I believe.