The Admin Site

Whoever runs the bookshelf needs to add and fix books without writing code. Django comes with an admin for that: a site where staff add, change and delete the rows of any model. It is already on: mysite/urls.py sends admin/ to admin.site.urls.

To log in you need a superuser, an account that may do everything. On your own computer you run python manage.py createsuperuser; here, type createsuperuser in the Shell tab. Every Run starts with an empty database, so create it again after each Run.

The admin shows only the models you register in the app's admin.py:

from django.contrib import admin

from .models import Loan

admin.site.register(Loan)

Each registered model gets a list page and forms built from its fields, with a drop-down for choices and a menu of rows for a ForeignKey. Each row is named by its __str__.