DRF Vanialla view with computed field

views.py

def get_users(request):
    FIELDS = ['first_name', 'last_name', 'last_login', 'phone', 'photo', 'email', 'id']
    users = list(User.objects.values(*FIELDS))
    for user in users:
        groups = list(user.groups.values('id', 'name'))
        user['groups'] = groups
        user['is_birthday_soon'] = user.is_birthday_in_this_month()
    return JsonResponse(users, safe=False)