The year ahead (DjangoCon 2012)

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10. The year ahead Adrian Holovaty DjangoCon 2012

11. • Alpha: Oct. 1 (feature freeze, branch created) • Beta:

    Nov. 1-ish • Release candidate 1: end of November • Release candidate 2: early December • Final: Christmas! Django 1.5 timeline
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14. Separate localflavor packages django-localflavor-ar django-localflavor-at django-localflavor-au django-localflavor-be django-localflavor-br django-localflavor-ca django-localflavor-ch

    django-localflavor-cl django-localflavor-cn ...

15. • Django 1.5: Deprecation warning • Django 1.6: Separate (bundled)

    packages, shim in repo • Django 1.7: HTTP 410 (GONE) Deprecation policy

16. >>> from django.contrib import comments Traceback (most recent call last):

    File "<stdin>", line 1, in <module> ImportError: What, you actually USE this monstrosity?!

17. >>> from django.contrib import databrowse Traceback (most recent call last):

    File "<stdin>", line 1, in <module> ImportError: Sorry, it was a cool concept, but we never got around to finishing it.

18. >>> from django.conf import settings >>> settings.PROFANITIES_LIST Traceback (most recent

    call last): File "<stdin>", line 1, in <module> FrameworkPlea: Oh, God, please just let this setting die already.

19. >>> from django.conf import settings >>> settings.SEND_BROKEN_LINK_EMAILS = True Traceback

    (most recent call last): File "<stdin>", line 1, in <module> StupidSettingsError: C’mon.

20. >>> from django.conf import settings >>> settings.SEND_BROKEN_LINK_EMAILS = True Traceback

    (most recent call last): File "<stdin>", line 1, in <module> StupidSettingsError:

21. >>> from django.conf import settings >>> settings.AUTH_PROFILE_MODULE Traceback (most recent

    call last): File "<stdin>", line 1, in <module> ThatStinks: Code smell detected

22. class User(models.Model): username = models.CharField(max_length=30, unique=True) first_name = models.CharField(max_length=30, blank=True)

    last_name = models.CharField(max_length=30, blank=True) email = models.EmailField(blank=True) password = models.CharField(max_length=128) is_staff = models.BooleanField(default=False) is_active = models.BooleanField(default=True) is_superuser = models.BooleanField(default=False) last_login = models.DateTimeField(default=timezone.now) date_joined = models.DateTimeField(default=timezone.now) groups = models.ManyToManyField(Group) user_permissions = models.ManyToManyField(Permission)

23. In myapp/models.py from django.contrib.auth.models import User class UserProfile(models.Model): user =

    models.OneToOneField(User) # required # Other fields here favorite_animal = models.CharField(max_length=20) favorite_beatle = models.CharField(max_length=20)

24. In myapp/models.py from django.contrib.auth.models import User class UserProfile(models.Model): user =

    models.OneToOneField(User) # required # Other fields here favorite_animal = models.CharField(max_length=20) favorite_beatle = models.CharField(max_length=20) In settings.py AUTH_PROFILE_MODULE = 'myapp.UserProfile'

25. In myapp/models.py from django.contrib.auth.models import User class UserProfile(models.Model): user =

    models.OneToOneField(User) # required # Other fields here favorite_animal = models.CharField(max_length=20) favorite_beatle = models.CharField(max_length=20) In settings.py AUTH_PROFILE_MODULE = 'myapp.UserProfile' In views.py request.user.get_profile()

26. In myapp/models.py class User(models.Model): username = models.CharField(max_length=100) password = models.CharField(max_length=128)

    favorite_animal = models.CharField(max_length=20) favorite_beatle = models.CharField(max_length=20)

27. In myapp/models.py class User(models.Model): username = models.CharField(max_length=100) password = models.CharField(max_length=128)

    favorite_animal = models.CharField(max_length=20) favorite_beatle = models.CharField(max_length=20) In settings.py USER_MODEL = 'myapp.User'

28. In myapp/models.py class User(models.Model): username = models.CharField(max_length=100) password = models.CharField(max_length=128)

    favorite_animal = models.CharField(max_length=20) favorite_beatle = models.CharField(max_length=20) In settings.py USER_MODEL = 'myapp.User' In views.py request.user

29. • Backwards compatible: fall back to old auth.User model •

    Any User model can work with the admin, using a clearly defined interface Design goals

30. ImportError: Settings cannot be imported, because environment variable DJANGO_SETTINGS_MODULE is

    undefined.

31. def mypage(request, slug): obj = MyModel.objects.get(slug=slug) return render(request, 'mypage.html', {'obj':

    obj})

32. def mypage(request, slug): obj = MyModel.objects.get(slug=slug) return render(request, 'mypage.html', {'obj':

    obj}) Connection info?

33. def mypage(request, slug): obj = MyModel.objects.get(slug=slug) return render(request, 'mypage.html', {'obj':

    obj}) Connection info? Template location?

34. def mypage(request, slug): obj = request.app.query(MyModel).get(slug=slug) return request.app.render('mypage.html', {'obj': obj})

35. def mypage(request, slug): obj = request.app.query(MyModel).get(slug=slug) return request.app.render('mypage.html', {'obj': obj})

    app.query()

36. def mypage(request, slug): obj = request.app.query(MyModel).get(slug=slug) return request.app.render('mypage.html', {'obj': obj})

    app.query() app.render()

37. def mypage(request, slug): obj = request.app.query(MyModel).get(slug=slug) return request.app.render('mypage.html', {'obj': obj})

    from django import YetAnotherAppClass app = YetAnotherAppClass(settings={ 'DATABASES': '...', 'TEMPLATE_DIRS': ['/path/to/templates'], }, rootview=my_urls) app.runserver()

38. >>> from django import javascript_stuff Traceback (most recent call last):

    File "<stdin>", line 1, in <module> NotImplementedYet: But it’s about time.

39. PJAX (P = pushstate)

40. Web framework

41. Web framework returns full page Web framework returns full page

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43. Web framework returns full page Web framework returns *diff* and

    changes URL

44. Overview

45. Overview Click link Trigger Ajax request

46. Overview Click link Trigger Ajax request Server says: “These bits

    changed”

47. Overview Click link Trigger Ajax request Server says: “These bits

    changed” JavaScript changes the page in place

48. Overview Click link Trigger Ajax request Server says: “These bits

    changed” JavaScript changes the page in place URL gets updated with pushstate

49. MIDDLEWARE_CLASSES = ( 'django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.contrib.pjax.middleware.PjaxMiddleware', )

50. http://tinyurl.com/pjaxvideo

51. Real-time

52. Content sites Applications # of sites

53. Content sites Applications # of sites

54. Content sites Applications # of sites Move this to the

    right

55. Thanks for using Django Love, Adrian