How to sort QuerySet by field ,,OneToOneField,,?

Question

Django

Required: sort the QuerySet by the field of the dependent ,,OneToOneField,, record.

,, parent ,, model

class productModel(models.Model):
    price = models.PositiveIntegerField('Цена', null = True)

dependent model

class characterist_pkModel(models.Model):
    base_product = models.OneToOneField('productModel', on_delete= models.CASCADE)
    category = models.CharField('Категория', max_length= 40, null= True)

And you need to sort the QuerySet with the records of the characterist_pkModel model by the price field of the parent record, like:

characterist_pkModel.objects.get(pk= 1).base_product.order_by('price')

but for the whole QuerySet.

Answer 1

with double underscore (__)
product_objs.order_by('base_product__price')