Well consider two models:

class School(models.Model):
    name = models.TextField(default="hello world")

class Student(models.Model):
    key = models.TextField(default="somedata")
    a = models.ForeignKey(Vendor)

So a many to one relationship from School to Student
How would I get (from School’s perspective) all School which have a Student that set “key” to the required value?

Especially in the already existing query:

School.objects.filter(Q(name="hello world") | Q(queryshould_here))

I’ve tried

A.objects.filter(Q(name="hello world") | Q(student__key="test"))

However that (obviously) fails with:

django.core.exceptions.FieldError: Unsupported lookup 'v' for ManyToOneRel or join on the field not permitted.