Autorisations de modèle utilisateur personnalisées

Tout fonctionne correctement, mais je ne peux pas ajouter d'autorisations à mes utilisateurs via l'administrateur. Lorsque je change d'utilisateur, la boîte avec les autorisations Utilisateur apparaît en place, mais toutes les autorisations que j'ajoute n'ont aucun effet. Lorsque je me connecte en tant qu'utilisateur, je n'ai pas la permission de faire quoi que ce soit.Autorisations de modèle utilisateur personnalisées

C'est ce que j'ai dans "accounts.models":

from django.utils import timezone 
from django.db import models 
from django.contrib.auth.models import PermissionsMixin 
from django.contrib.auth.models import AbstractBaseUser, BaseUserManager 
from django.core.mail import send_mail 
from django.utils.translation import ugettext_lazy as _ 
from django.utils.http import urlquote 

class CustomUserManager(BaseUserManager): 
    def _create_user(self, email, password, is_staff, is_superuser, **extra_fields): 
    now = timezone.now() 

    if not email: 
     raise ValueError('The given email must be set') 

    email= self.normalize_email(email) 
    user = self.model(
      email=email, 
      is_staff=is_staff, is_active=True, 
      is_superuser=is_superuser, last_login=now, 
      date_joined=now, **extra_fields 
     ) 
    user.set_password(password) 
    user.save(using=self._db) 
    return user 

    def create_user(self, email, password=None, **extra_fields): 
     return self._create_user(email, password, False, False, **extra_fields) 

    def create_superuser(self, email, password, **extra_fields): 
     return self._create_user(email, password, True, True, **extra_fields) 

class CustomUser(AbstractBaseUser, PermissionsMixin): 
    username = models.CharField(max_length=30) 
    email = models.EmailField(unique=True) 
    date_joined = models.DateTimeField(_('date joined')) 
    is_active = models.BooleanField(default=True) 
    is_admin = models.BooleanField(default=False) 
    is_staff = models.BooleanField(default=False) 

    USERNAME_FIELD = 'email' 
    REQUIRED_FIELDS = ['username'] 

    objects = CustomUserManager() 

    class Meta: 
     verbose_name=_('user') 
     verbose_name_plural = ('users') 

    def get_absolute_url(self): 
     return "https://stackoverflow.com/users/%s/" % urlquote(self.email) 
    def get_full_name(self): 
     return self.username 
    def get_short_name(self): 
     return self.username 
    def email_user(self, subject, message, from_email=None): 
     send_mail(subject, message, from_email, [self.email])

C'est ce que j'ai dans "accounts.admin":

from django import forms 
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.forms import ReadOnlyPasswordHashField 

from .models import CustomUser 


class UserCreationForm(forms.ModelForm): 
    """A form for creating new users. Includes all the required 
    fields, plus a repeated password.""" 
    password1 = forms.CharField(label='Password', widget=forms.PasswordInput) 
    password2 = forms.CharField(label='Password confirmation', widget=forms.PasswordInput) 

    class Meta: 
     model = CustomUser 
     fields = ('email',) 

    def clean_password2(self): 
     # Check that the two password entries match 
     password1 = self.cleaned_data.get("password1") 
     password2 = self.cleaned_data.get("password2") 
     if password1 and password2 and password1 != password2: 
      raise forms.ValidationError("Passwords don't match") 
     return password2 

    def save(self, commit=True): 
     # Save the provided password in hashed format 
     user = super(UserCreationForm, self).save(commit=False) 
     user.set_password(self.cleaned_data["password1"]) 
     if commit: 
      user.save() 
     return user 

class UserChangeForm(forms.ModelForm): 
    """A form for updating users. Includes all the fields on 
    the user, but replaces the password field with admin's 
    password hash display field. 
    """ 
    password = ReadOnlyPasswordHashField() 

    class Meta: 
     model = CustomUser 
     fields = ('email', 'password', 'is_active') 
    def clean_password(self): 
     # Regardless of what the user provides, return the initial value. 
     # This is done here, rather than on the field, because the 
     # field does not have access to the initial value 
     return self.initial["password"] 


class UserAdmin(BaseUserAdmin): 
    # The forms to add and change user instances 
    form = UserChangeForm 
    add_form = UserCreationForm 

    # 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', 'username', 'is_staff', 'is_active', 'last_login', 'date_joined') 
    list_filter = ('is_staff', 'is_active') 
    fieldsets = (
     (None, {'fields': ('email', 'password', 'is_active')}), 
     ('Permissions', {'fields': ('is_staff', 'groups', 'user_permissions')}), 
    ) 
    # 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', 'password1', 'password2')} 
     ), 
    ) 
    search_fields = ('email', 'username') 
    ordering = ('email',) 

# Now register the new UserAdmin... 
admin.site.register(CustomUser, UserAdmin) 
# ... and, since we're not using Django's built-in permissions, 
# unregister the Group model from admin. 
# admin.site.unregister(Group)