Profile model (extending custom user model) not getting registered in django admin - django

Question

I am new to django and totally confused so what should i do for these..
Note- list_display = ('email', 'first_name',) 'email', 'first_name' which defined in custom user model User
I am not getting errors but it not registering the Profile model
to admin why?
if i am adding phone from Profile model to list_display = ('email', 'first_name', 'phone') i m getting error (admin.E108) The value of 'list_display[2]' refers to 'phone', which is not a callable, an attribute of 'UserAdmin', or an attribute or method on 'users.User'. How can i add phone in list_display?
I uses post_save_user_model_receiver() to auto create profile when
user is created is it best way to do it?
how can i add all Profile model fields for edit/update in users.admin (which is below).
profile model
from django.db import models
from django.dispatch import receiver
from django.db.models.signals import post_save
from django.contrib.auth import get_user_model # or from users.models import User
User = get_user_model()
class Profile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
photo = models.ImageField(null=True, blank=True)
date_of_birth = models.DateField(null=True, blank=True)
phone = models.IntegerField(null=True, blank=True)
country = models.CharField(max_length=150, null=True, blank=True)
city = models.CharField(max_length=150, null=True, blank=True)
bio = models.TextField(max_length=150, null=True, blank=True)
def __str__(self):
return str(self.user.email)
def post_save_user_model_receiver(sender, instance, created, *args, **kwargs ):
if created:
try:
Profile.objects.create(user=instance) # it create those user's profile
except:
pass
post_save.connect(post_save_user_model_receiver, sender=User)
Admin
from django.contrib import admin
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth import get_user_model
from .models import Profile
User = get_user_model()
# Define an inline admin descriptor for Employee model
# which acts a bit like a singleton
class ProfileInline(admin.StackedInline):
model = Profile
can_delete = False
verbose_name_plural = 'profile'
# Define a new User admin
class UserAdmin(BaseUserAdmin):
inlines = (ProfileInline,)
list_display = ('email', 'first_name',)
list_filter = ('admin', 'staff', 'active')
search_fields = ('email',)
ordering = ('email',)
filter_horizontal = ()
# Re-register UserAdmin
admin.site.unregister(User)
admin.site.register(User, UserAdmin)
users.admin file
from django.contrib import admin
from django.contrib.auth.models import Group
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth import get_user_model # or from .models import User
from .forms import UserAdminCreationForm, UserAdminChangeForm
# Register your models here.
User = get_user_model() # or from .models import User
class UserAdmin(BaseUserAdmin):
# The forms to add and change user instances
form = UserAdminChangeForm
add_form = UserAdminCreationForm
# The fields to be used in displaying the User model.
# These override the definitions on the base UserAdmin
# that reference specific fields on auth.User.
list_display = ('email', 'first_name', 'get_phone', 'last_login', 'date_joined', 'is_admin')
list_filter = ('admin', 'staff', 'active')
list_select_related = ('profile',)
def get_phone(self, instance): # to show the Phone in list display from the Profile Model
return instance.profile.phone
get_phone.short_description = 'Phone'
fieldsets = (
(None, {'fields': ('email', 'password')}),
('Personal Info', {'fields': ('first_name', 'last_name',)}),
('Permissions', {'fields': ('admin', 'staff', 'active')}),
)
# add_fieldsets is not a standard ModelAdmin attribute. UserAdmin
# overrides get_fieldsets to use this attribute when creating a user.
add_fieldsets = (
(None, {
'classes': ('wide',),
'fields': ('email', 'first_name', 'last_name', 'password1', 'password2', )
}
),
)
search_fields = ('email',)
ordering = ('email',)
filter_horizontal = ()
admin.site.register(User, UserAdmin)
# Remove Group Model from admin. We're not using it.
admin.site.unregister(Group)