from django.db import models
from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.dispatch import receiver
from phonenumber_field.modelfields import PhoneNumberField

User._meta.get_field('email').blank = False
User._meta.get_field('email')._unique = True

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE, related_name ='profile')
    email_confirmed = models.BooleanField(default=False)
    phone_number = PhoneNumberField( blank=True, null=True)
    organisation = models.CharField(max_length=30, blank=True)


@receiver(post_save, sender=User)
def update_user_profile(sender, instance, created, **kwargs):
    if created:
        Profile.objects.create(user=instance)
        instance.profile.save()

from django.contrib import admin
from django.contrib.auth import admin as upstream
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.forms import UserCreationForm, UserChangeForm
from django.contrib.auth.models import Group, User
from django.utils.translation import ugettext, ugettext_lazy as _
from django.db.models.signals import post_save
from django.dispatch import receiver
from .models import Profile


class ProfileInline(admin.StackedInline):
    model = Profile
    can_delete = False
    verbose_name_plural = 'Profile'
    fk_name = 'user'

class CustomUserAdmin(UserAdmin):
    inlines = (ProfileInline, )
    list_select_related = ( 'profile', )
    list_display = ('email', 'username', 'first_name', 'last_name', 'is_staff')

    #exclude = ('username',)

    fieldsets = (
        ('Personal information', {'fields': ('first_name', 'last_name', 'username', 'email', 'password')}),
        ('Permissions', {'fields': ('is_active', 'is_staff', 'is_superuser', 'groups', 'user_permissions')}),
        ('Important dates', {'fields': ('last_login', 'date_joined')}),
    )

    add_fieldsets = (
        ('None', {
            'classes': ('wide',),
            'fields': ('username', 'email', 'password1', 'password2')}
        ),
    )

    def get_inline_instances(self, request, obj=None):
        if not obj:
            return list()
        return super(CustomUserAdmin, self).get_inline_instances(request, obj)

    def get_ordering(self, request):
        return ['-date_joined']


admin.site.unregister(User)
admin.site.register(User, CustomUserAdmin)