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What's Coming in

Django 1.4

by Matthew Makai

Excella Consulting

Talk given to Django District on Feb. 21, 2012

What's Incompatible?

Python 2.4
"postgresql" type and PostgresSQL before 8.2

What's New?

ORM bulk create
Better WSGI support
Time zone support
In browser testing frameworks

What's

Incompatible?

Python 2.4

Django 1.4 drops Python 2.4
Context managers -> Python 2.5+
Python 2.5 - 2.7 required
No Python 3 support (yet)

PostgreSQL support

"postgresql" database type removed
use psycopg2 instead
PostgreSQL 8.2 minimum version

What's

New?

ORM bulk create

Efficient insertion for bulk data

  BlogPost.objects.bulk_create([

    BlogPost(title="Django 1.4 presentation"),

    BlogPost(title="Hello, Django District")

    BlogPost(title="First post!"),

  ])

save() is not called and no pre_save or post_save signals

Better WSGI support

startproject now creates wsgi.py
Dev server supports external WSGI configuration
Use deployment WSGI config in dev
mod_python removal in Django 1.5

Time zone support

Can enable time zone support
Store date/times as UTC
Localizes for users
In settings.py:

    USE_TZ = True

Recommended you install pytz

In browser testing

LiveServerTestCase
Launches live Django server
Integrate w/ in-browser frameworks
pip install selenium
Uses staticfiles contrib app

Other Highlights

QuerySet.prefetch_related()
Project layout & manage.py
HTML5 doctype on admin pages
Custom startproject templates
Admin no longer supports IE6

More Resources

http://www.mattmakai.com/
https://docs.djangoproject.com/en/dev/
https://docs.djangoproject.com/en/dev/releases/1.4/

Thank you!