Django Foreign Key model cant display in view JSON - django

Question

When I run this, I get JSON file but the foreign key (contact numbers) are not included, I want to display one contact name/address/email with multiple contact numbers.
models.py
from django.db import models
class PhoneBook(models.Model):
name = models.CharField(max_length=50)
address = models.CharField(max_length=100, default='address')
email = models.CharField(max_length=50, default='email')
note = models.CharField(max_length=100, default='note')
def __str__(self):
return self.name
class ContactNumber(models.Model):
number = models.ForeignKey(PhoneBook, related_name="contact_numbers")
contact_number= models.CharField(max_length=30)
def __str__(self):
return self.contact_number
views.py
from django.shortcuts import render
from .models import PhoneBook,ContactNumber
from django.http import JsonResponse
from django.views import View
class PhoneBookList(View):
def get(self,request):
phonebooklist=list(PhoneBook.objects.values())
return JsonResponse(phonebooklist,safe=False)
admin.py
from django.contrib import admin
from .models import PhoneBook,ContactNumber
class ContactNumberInline(admin.StackedInline):
model = ContactNumber
class PhoneBookAdmin(admin.ModelAdmin):
inlines =[
ContactNumberInline,
]
admin.site.register(PhoneBook)
admin.site.register(ContactNumber)
RESULT:
enter image description here

Answer 1

I might be able to answer with this approach.
class PhoneBook(models.Model):
....
def to_json(self):
contact_numbers = [c.contact_number
for c in self.contact_numbers.all()]
return {
'name': self.name,
'email': self.email,
'address': self.address,
'note': self.note,
'contact_numbers': contact_numbers
}
In your view.
class PhoneBookList(View):
def get(self,request):
phonebooklist = PhoneBook.objects.all()
serialized_data = [pb.to_json() for pb in phonebooklist]
return JsonResponse(serialized_data, safe=False)
A bit dirty solution though