This contains the majority of important changes made since Django 1.6. Some, such as GIS or finer details on writing database backends, were not fully represented. Some private APIs have also been left off for deeper internal stuff.

django.conf.urls

• i18n_patterns() no longer takes prefix=
• include()
  • app_name argument has been replaced with passing a two-tuple of (urls, app_name)
  • Now requires namespace= instead of a third tuple argument (if passing a tuple)
• patterns() is replaced with a standard list
  • Entries must contain url()
• reverse() no longer takes a dotted view path
• shortcut() was removed
• url() requires a function instead of a dotted view path
• ResolverMatch.app_name now contains the full namespace path if using nested namespaces, and an empty string if there is no namespace
• A custom handler404 must now explicitly return a response with a 404 error code.
• app_name can be set in a urls.py file to specify the default app name for all URLs.
• When including an AdminSite's URLs, pass admin.site.urls as the view instead of include(admin.site.urls)

django.contrib.admin

• django.contrib.admin.util was Renamed to django.contrib.admin.utils
• django.contrib.admin.validation module is gone
• ModelAdmin
  • ModelAdmin.declared_fieldsets is gone (Internal API). Use ModelAdmin.get_fieldsets() instead.
  • ModelAdmin.get_formsets() was replaced with ModelAdmin.get_formsets_with_inlines()
  • ModelAdmin.validator_class and ModelAdmin.default_validator_class has been replaced with the new checks_class attribute
  • ModelAdmin.validate() was replaced with ModelAdmin.check()
  • The allow_tags= boolean for functions was removed. Use format_html() or similar in the function body instead.
  • When adding a foreign key ID (myfield_id) to list_display, the ID will now be shown instead of the string value of the related object
• InlineAdminForm.original_content_type_id was removed
• The jQuery static media files have been moved into a vendor/jquery subdirectory.