django-admin startproject manage.py commands settings module installed apps URL configuration path converter include URLs function views class-based views templates

model fields ForeignKey ManyToManyField OneToOneField makemigrations migrate QuerySet filter QuerySet exclude Q objects F expressions

select_related prefetch_related annotate aggregate order_by values custom managers transactions.atomic select_for_update database constraints

Form class ModelForm field validation clean method clean_field method form errors formsets model formsets file uploads CSRF protection

User model custom user model authenticate login logout login_required permissions groups admin registration admin actions

request GET and POST JsonResponse redirect Http404 FileResponse StreamingHttpResponse messages framework middleware sessions cookies

TestCase test client RequestFactory model tests view tests form tests fixtures override_settings mock external service coverage workflow

staticfiles collectstatic media files caching database connection pooling logging security middleware ALLOWED_HOSTS CSRF trusted origins ASGI vs WSGI deployment checklist