What about adding a .reload() method to the QuerySet API?

[fero@…]

Sometimes it is needed to reload data from database backend. It could be necessary in example to benefit of some values type-casting applied by the database backend module.

In various Django projects I developed I find useful a simple method QuerySet.reload() like this:

    def reload(self):
        """Reload QuerySet from backend."""
        pks_list = self.values_list('pk')
        return self.model.objects.filter(pk__in=pks_list)

[Aymeric Augustin]

This will be very inefficient for large querysets. I'm -1 on this implementation.

As far as I know, the easiest way to reload a QuerySet is simply qs.filter().

It will clone the queryset and wipe the result cache.

You may get different rows if the database has changed since the QuerySet was first evaluated. That's the behavior I would expect.

[fero@…]

Thanks I checked it out, I didn't know about this feature.

[Rich Rauenzahn]

FYI: This is a duplicate of https://code.djangoproject.com/ticket/22553 filed a year later that suggests using .all(), and fixes the docs to point that feature out.