State Of Django

The State of Django

Jacob Kaplan-Moss

PyCon, March 27, 2009
http://jacobian.org/speaking/2009/state-of-django/

“Dude, we should
totally have a big Django
meetup some time!”

Developing reusable apps

James Bennett
! !

PyCon Chicago, March 15, 2008

Django 0.96
Over one year old

Unicode
http://docs.djangoproject.com/en/dev/ref/unicode/

Home Download Documentation Weblog Community Code

Django documentation Search

Everything you need to know about Django (and then Search
some).
Latest 1.0 0.96
All
First steps
Getting help
Overview
Browse
Having trouble? We’d like to
See what writing a database-driven
help! Table of contents
application with Django looks like.
General Index
Try the FAQ – it’s got
Installation
Global Module Index
answers to many common
Get Django installed on your computer.
questions.
Looking for specific You are here:
Tutorial: Writing your first information? Try the Index,
Django v1.0 documentation
Django application Module Index or the detailed
table of contents. Django documentation
Part 1
Search for information in the
Start a project, create models and play
Last update:
archives of the django-users
with the database API.
mailing list, or post a September 12, 2008, noon (CDT)

docs.djangoproject.com
Part 2 question.
Explore the automatically-generated Ask a question in the
admin site. #django IRC channel, or
search the IRC logs to see if
Part 3
its been asked before.

Pluggable file storage
http://docs.djangoproject.com/env/dev/howto/custom-file-storage/

ModelForms
http://docs.djangoproject.com/en/dev/topics/forms/modelforms/

Formsets
http://docs.djangoproject.com/en/dev/forms/formsets/

Session backends
http://docs.djangoproject.com/en/dev/topics/http/sessions/

Databrowse
http://docs.djangoproject.com/en/dev/ref/contrib/databrowse/

Databrowse

Reporters John Doe, Jane Smith, Eric Jones, More !

Articles Dog bites man, Man bites dog, More !

Databrowse

Home / Reporters / Jane Smith

Reporter: Jane Smith
ID 2

Name Jane Smith

Email jsmith@example.net

Appears in quot;reporterquot; in the following articles:

Dog bites man

django wiki mercurial docs presentations vmware (user: geo, pass: where2.0)

A world-class geographic web framework

GeoDjango

Django 1.1 beta
now available

What’s new in 1.1?
http://docs.djangoproject.com/en/dev/releases/1.1-alpha-1/

http://docs.djangoproject.com/en/dev/releases/1.1-beta-1/

ORM aggregation
http://docs.djangoproject.com/en/dev/topics/db/aggregation/

>>> Book.objects.aggregate(
... Avg('price'),
... highest_price = Max('price'))

{'price_avg': 45.0, 'highest_price': 82.80}

>>> Author.objects.aggregate(Sum('book__price'))

{'book_price_sum': 442}

>>> books = Book.objects.annotate(Max('authors__age'))

>>> books[0].name
u'Python Web Development With Django'

>>> books[0].authors.all()
[<Author: Jeffrey Forcier >, <Author: Paul Bissex>,
<Author: Wesley J. Chun>]

>>> books[0].authors__age__max
37.0

Publisher.objects.annotate(num_books=Count('book__id'))
.filter(num_books__gt=1)
.order_by('num_books')

Query Expressions
http://docs.djangoproject.com/en/dev/topics/db/queries/#query-expressions

>>> Poll.objects.update(votes = F('votes') + 1)

class Person(models.Model):
    ...

    class Meta:
        managed = False

from django.contrib.auth import User

class EmotionalUser(User):
    class Meta:
        proxy = True

    def is_angry(self):
        return self.username == 'hulk'

>>> Story.objects.filter(...).defer('body')

Conditional View Processing
http://docs.djangoproject.com/en/dev/topics/conditional-view-processing

def latest_entry(request):
return Entry.objects.aggregate(Max('published'))

@last_modified(latest_entry)
def front_page(request):
...

Thank you!
Jacob Kaplan-Moss
<jacob@jacobian.org>

BoF: 2:30pm today

State Of Django

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