Check if a OneToOne relation exists in Django

Question

Now I\'m using django 1.6

I have two models relates with a OneToOneField.

class A(models.Model):
    pass

class B(models.Model):
    re         


        

Answer 1

hasattr works fine with Django1.11 ! You may use getattr for shorter version:

getattr(self, 'field', default)

In your case

b = getattr(a, 'ref_b', None)

https://docs.python.org/3.6/library/functions.html#getattr