Django refresh_from_db for ForeignKey

AFAIK In django, Till now refresh_from_db will not update data for relational fields.It only check whether relation is removed or not. But you can do like (as you did).

for i in container_product._meta.concrete_fields:
    if i.is_relation:
        getattr(container_product, i.name).refresh_from_db()

OR override refresh_from_db

class Mymodel(models.Model):
    def refresh_from_db(self, using=None, fields=None):
        super(Mymodel, self).refresh_from_db(using=None, fields=None)
        for i in self._meta.concrete_fields:
            if i.is_relation and getattr(self, i.name):
                getattr(self, i.name).refresh_from_db()