django queryset return single value

Question

I have the following -

obj.owner_id = Owner.objects.filter(owner_name=owner_obj).values_list('owner_id')[0]

Problem is the value it's returning is a tuple. Specifically this -

(786,)

All I want to return is the integer value or 786 .

What am I doing wrong?

Answer 1

对于后代来说，这也是可行的，并且（在我看来）是所有方法中最干净的选择：

Owner.objects.values_list('owner_id', flat=True).get(owner_name=owner_obj)

Answer 2

Assuming owner_name is unique, either of these will do the trick:

• owner_id = Owner.objects.only('owner_id').get(owner_name=owner_name).owner_id
• owner_id = Owner.objects.values('owner_id').get(owner_name=owner_name)['owner_id']
• owner_id = Owner.objects.values_list('owner_id', flat=True).get(owner_name=owner_name)

Documentation:

• only()
• values()
• values_list()