python - Django (1.10) override AdminSite

Question

I've tried to override AdminSite class with my own custom class. I followed tutorial from django's documentation: https://docs.djangoproject.com/en/1.10/ref/contrib/admin/#customizing-adminsite but it didn't work. To be specific, I'd like to override original AdminSite with my own class and not just add another admin site into my project.

I've created my custom class MyAdminSite which inherit from class

from django.contrib.admin import AdminSite


class MyAdminSite(AdminSite):
    pass

Then in my app urls.py I've add:

from django.conf.urls import url, include
import django.contrib.admin as admin
from .admin_site import MyAdminSite

admin.site = MyAdminSite()
admin.autodiscover()


urlpatterns = [
    url(r'^', admin.site.urls),
]

It seemed to work, but admin models are register to AdminSite insted of MyAdminSite.

I tried three ways of register models to my custom site:

@admin.register(Model)
class ModelAdmin(model.AdminModel):
...

This way models are registered to original AdminSite.

Second way:

@admin.site.register(Model):
class ModelAdmin(model.AdminModel):
...

That don't work and cause exception. The ModelAdmin class isn't passed to register method.

Last way:

class ModelAdmin(model.AdminModel):
...
admin.site.register(Model, ModelAdmin)

That works, but on admin site I can see only my models not models from Django admin (Users and Groups).

How can I permanently override admin.site and register all models to MyAdminSite?

Answer 1

From myapp/admin.py:

from django.contrib.auth.models import Group, User
from django.contrib.auth.admin import GroupAdmin, UserAdmin
from django.contrib.admin import AdminSite
from django.contrib import admin

from .models import MyModel #This is my app's model

# Custom admin site
class MyAdminSite(AdminSite):
    site_header = 'My Project Title'
    site_title  = 'My Project Title Administration'
    index_title = 'My Project Title Administration'
    # You can add on more attributes if you need 
    # Check out https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#adminsite-objects

# Create admin_site object from MyAdminSite
admin_site = MyAdminSite(name='my_project_admin')

# Register the models
class MyModelAdmin(admin.ModelAdmin):
    list_display = ('id', 'description')

admin_site.register(MyModel, MyModelAdmin)

# Create and register all of your models
# ....

# This is the default Django Contrib Admin user / group object
# Add this if you need to edit the users / groups in your custom admin
admin_site.register(Group, GroupAdmin)
admin_site.register(User, UserAdmin)

From myproject/urls.py

from django.conf.urls import url
from django.contrib import admin
from myapp.admin import admin_site ##! Important..Import your object (admin_site) instead of your class (MyAdminSite)

urlpatterns = [
    url(r'^admin/', admin_site.urls), #Now all /admin/ will go to our custom admin
]