如何注释 django 对象中的字符串

Question

I want to concatinate first name + last name but i'm getting 0 as a value of full name

What I'm trying to do is this

Customer.objects.annotate(full_name=F('first_name') + F('last_name')).filter(full_name='Filan Fisteku')

Answer 1

from django.db.models import Value
from django.db.models.functions import Concat


ss = Customer.objects.annotate(full_name=Concat('first_name', Value(' '), 'last_name')).filter(full_name='Filan Fisteku')