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The State of Django

Jacob Kaplan-Moss

PyCon, March 27, 2009
http://jacobian.org/speaking/2009/state-of-django/
Happy five years!
Since PyCon 2008...
7,000
14,000
QSRF
NFA
Merged
“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
1.0
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.
48 languages
Signals
0.96
1.0
QSRF
Oracle
Pluggable file storage
http://docs.djangoproject.com/env/dev/howto/custom-file-storage/
newforms
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/
File uploads: less FAIL
autoescape
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
newforms-admin
Jython
   PyPy
IronPython*
et cetera
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)
Test faster
Unmanaged models
class Person(models.Model):
    ...

    class Meta:
        managed = False
Proxy models
from django.contrib.auth import User

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

    def is_angry(self):
        return self.username == 'hulk'
Deferred fields
>>> 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):
    ...
Admin
What’s next?
Django 1.1
  April 20ish
Please help!
GSoC
EuroDjangoCon
US DjangoCon ’09
1.2
Py3k
Thank you!
  Jacob Kaplan-Moss
<jacob@jacobian.org>




 BoF: 2:30pm today

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State Of Django