1. Farkas Szilveszter
Magyarországi Web Konferencia
Budapest, 2009. október 3.

2. Farkas Szilveszter

3. Farkas Szilveszter

4. Farkas Szilveszter

5. Farkas Szilveszter

6. from presentation import (Django,
Forms,
Middleware,
Tests,
Python)

7. >>> import django
>>> django.ORIGINAL_AUTHOR
'Adrian Holovaty'
>>> django.OPEN_SOURCED
datetime.date(2005, 7, 13)
>>> django.VERSION
'1.1-final'
>>> len(django.AUTHORS)
485

8. >>> import django
>>> django.ORIGINAL_AUTHOR
'Adrian Holovaty'
>>> django.OPEN_SOURCED
datetime.date(2005, 7, 13)
>>> django.VERSION
'1.1-final'
>>> len(django.AUTHORS)
485

9. >>> import django
>>> django.ORIGINAL_AUTHOR
'Adrian Holovaty'
>>> django.OPEN_SOURCED
datetime.date(2005, 7, 13)
>>> django.VERSION
'1.1-final'
>>> len(django.AUTHORS)
485

10. >>> import django
>>> django.ORIGINAL_AUTHOR
'Adrian Holovaty'
>>> django.OPEN_SOURCED
datetime.date(2005, 7, 13)
>>> django.VERSION
'1.1-final'
>>> len(django.AUTHORS)
485

11. >>> import django
>>> django.ORIGINAL_AUTHOR
'Adrian Holovaty'
>>> django.OPEN_SOURCED
datetime.date(2005, 7, 13)
>>> django.VERSION
'1.1-final'
>>> len(django.AUTHORS)
485

12. >>> django.MODEL
'model'
>>> django.VIEW
'template'
>>> django.CONTROLLER
'view'

13. $ django-admin startproject webkonf
$ cd webkonf
$ ./manage.py startapp conference

14. from django.db import models
class Venue(models.Model):
name = models.CharField(max_length=64)
address = models.CharField(max_length=128)
class Conference(models.Model):
name = models.CharField(max_length=32)
venue = models.ForeignKey(ConferenceVenue)
from django.contrib.auth.models import User
class Attendee(models.Model):
user = models.OneToOneField(User)
conferences = models.ManyToManyField(
Conference, related_name='attendees')

15. from django.db import models
class Venue(models.Model):
name = models.CharField(max_length=64)
address = models.CharField(max_length=128)
class Conference(models.Model):
name = models.CharField(max_length=32)
venue = models.ForeignKey(Venue)
from django.contrib.auth.models import User
class Attendee(models.Model):
user = models.OneToOneField(User)
conferences = models.ManyToManyField(
Conference, related_name='attendees')

16. from django.db import models
class Venue(models.Model):
name = models.CharField(max_length=64)
address = models.CharField(max_length=128)
class Conference(models.Model):
name = models.CharField(max_length=32)
venue = models.ForeignKey(Venue)
from django.contrib.auth.models import User
class Attendee(models.Model):
user = models.OneToOneField(User)
conferences = models.ManyToManyField(
Conference, related_name='attendees')

17. [...]
<h1>{{ conference.name }}</h1>
<h2>Látogatók</h2>
<ul>
{% for attendee in conference.attendees.all %}
<li>{{ attendee.user.get_full_name }}</li>
{% endfor %}
</ul>
[...]

18. from django.shortcuts import (get_object_or_404,
render_to_response)
from conference.models import Conference
def conference_page(request, conf_id):
conference = get_object_or_404(
Conference, pk=conf_id)
context = {
'conference': conference
}
return render_to_response(
'conference.html', context)

19. from django.conf.urls.defaults import *
urlpatterns = patterns('',
(r'^/conf/(?P<conf_id>d+)/$',
'conference.views.conference_page'),
)

21. from django import forms

22. űrlapok

23. űrlapok
szerver oldali adatellenőrzés

24. Űrlap osztály
class AttendeeForm(forms.Form):
Mező
name = forms.CharField('Név', max_length=32)
Widget
password = forms.CharField(
'Jelszó',
max_length=32,
widget=forms.PasswordInput())

25. Űrlap osztály
class AttendeeForm(forms.Form):
Mező
name = forms.CharField('Név', max_length=32)
Widget
password = forms.CharField(
'Jelszó',
max_length=32,
widget=forms.PasswordInput())

26. Űrlap osztály
class AttendeeForm(forms.Form):
Mező
name = forms.CharField('Név', max_length=32)
Widget
password = forms.CharField(
'Jelszó',
max_length=32,
widget=forms.PasswordInput())

27. Beépített ellenőrzés
email = forms.EmailField(max_length=75)
zip = forms.IntegerField(min_value=1000,
max_value=9999)
Mezőszintű egyedi ellenőrzés
def clean_FIELDNAME(self):
Űrlapszintű egyedi ellenőrzés
def clean(self):

28. Beépített ellenőrzés
email = forms.EmailField(max_length=75)
zip = forms.IntegerField(min_value=1000,
max_value=9999)
Mezőszintű egyedi ellenőrzés
def clean_FIELDNAME(self):
Űrlapszintű egyedi ellenőrzés
def clean(self):

29. Beépített ellenőrzés
email = forms.EmailField(max_length=75)
zip = forms.IntegerField(min_value=1000,
max_value=9999)
Mezőszintű egyedi ellenőrzés
def clean_FIELDNAME(self):
Űrlapszintű egyedi ellenőrzés
def clean(self):

30. Mezőszintű egyedi ellenőrzés
def clean_email(self):
if 'email' in self.cleaned_data:
email = self.cleaned_data['email']
if not email.endswith('@web.conf.hu'):
raise forms.ValidationError('Nem vagy szervező.')
else:
return email

31. from django import middlewares

33. process_request() process_response()
process_view() process_exception()

34. from django.http import HttpResponseRedirect
class LoginMiddleware(object):
def process_request(self, request):
if not request.user.is_authenticated():
if request.get_full_path() !=
'/login/':
return HttpResponseRedirect(
'/login/?next=%s' %
request.get_full_path())
else:
return None

35. from django.http import HttpResponseRedirect
class LoginMiddleware(object):
def process_request(self, request):
if not request.user.is_authenticated():
if request.get_full_path() !=
'/login/':
return HttpResponseRedirect(
'/login/?next=%s' %
request.get_full_path())
else:
return None

36. process_view(self, request,
view_func, view_args, view_kwargs)
process_response(self, request, response)
process_exception(self, request, exception)

37. from django import test

38. doctest
class Conference(models.Model):
"""
>>> v = Venue.objects.create(
name='CEU', address='Budapest')
>>> c = Conference.objects.create(
Name='WebKonf', venue=v)
>>> c.name
u'WebKonf'
>>> c.venue.name
u'CEU'
"""
name = models.CharField(max_length=32)
venue = models.ForeignKey(Venue)

39. unittest
import unittest
class ConferenceTest(unittest.TestCase):
def setUp(self):
venue = Venue.objects.create(
Name='CEU', address='Budapest')
self.conf = Conference.objects.create(
Name='WebKonf', venue=venue)
def test_conference(self):
self.assertEquals(self.conf.name,
u'WebKonf')
self.assertEquals(self.conf.venue.name,
u'CEU')
def tearDown(self):
self.conf.delete()

40. from django.test import TestCase
-> kliens (GET, POST)
-> „hozzávalók” beemelése (JSON/XML dump)
-> egyedi url konfiguráció
-> e-mail fiók
-> további assert-ek

41. from django.test import TestCase
-> kliens (GET, POST)
def test_conference(self):
response = self.client.get('/conf/1/')
self.assertTrue('<h1>WebKonf</h1>' in
response.content)

42. from django.test import TestCase
-> „hozzávalók” beemelése (JSON/XML dump)
class ConferenceTest(TestCase):
fixtures = ['webkonf.json']
$ ./manage.py dumpdata conference >
conference/fixtures/webkonf.json

43. from django.test import TestCase
-> egyedi url konfiguráció
class ConferenceTest(TestCase):
urls = 'conference.test_urls'

44. from django.test import TestCase
-> e-mail fiók
from django.core import mail
def test_email(self):
mail.send_mail('Subject', 'Message.',
'from@web.conf.hu', ['jakab@gipsz.hu'],
fail_silently=False)
self.assertEquals(len(mail.outbox), 1)
self.assertEquals(mail.outbox[0].subject,
'Subject')

45. from django.test import TestCase
-> további assert-ek
assertContains(response, text, count=None,
status_code=200)
assertNotContains(response, text,
status_code=200)
assertFormError(response, form, field, errors)
assertTemplateUsed(response, template_name)
assertTemplateNotUsed(response, template_name)
assertRedirects(response, expected_url,
status_code=302, target_status_code=200)

46. $ python

47. from django.db import models
from django.contrib.localflavor.us.models import
USStateField
class Venue(models.Model):
name = models.CharField(max_length=64)
address = models.CharField(max_length=128)
class USVenue(Venue):
state = USStateField(default='CA')
class ConferenceVenue(Venue):
rooms = forms.PositiveIntegerField()

48. from django.db import models
from django.contrib.localflavor.us.models import
USStateField
class Venue(models.Model):
name = models.CharField(max_length=64)
address = models.CharField(max_length=128)
class USVenue(Venue):
state = USStateField(default='CA')
class ConferenceVenue(Venue):
rooms = forms.PositiveIntegerField()

49. from django.db import models
from django.contrib.localflavor.us.models import
USStateField
class Venue(models.Model):
name = models.CharField(max_length=64)
address = models.CharField(max_length=128)
class USVenue(Venue):
state = USStateField(default='CA')
class ConferenceVenue(Venue):
rooms = forms.PositiveIntegerField()

50. from django.db import models
from django.contrib.localflavor.us.models import
USStateField
class Venue(models.Model):
name = models.CharField(max_length=64)
address = models.CharField(max_length=128)
class Meta:
abstract = True
class USVenue(Venue):
state = USStateField(default='CA')
class ConferenceVenue(Venue):
rooms = forms.PositiveIntegerField()

51. from django.contrib.auth.decorators import
login_required
@login_required
def conference_private(request):
[...]
from django.utils.decorators import
decorator_from_middleware
from conference.middleware.login import
LoginMiddleware
login_required = decorator_from_middleware(
LoginMiddleware)
@login_required
def conference_private(request):
[...]

52. from django.contrib.auth.decorators import
login_required
@login_required
def conference_private(request):
[...]
from django.utils.decorators import
decorator_from_middleware
from conference.middleware.login import
LoginMiddleware
login_required = decorator_from_middleware(
LoginMiddleware)
@login_required
def conference_private(request):
[...]

53. Modulok (csomagok)
__init__.py
conference/
__init__.py
models.py
templates/
conference.html
views.py
manage.py
settings.py
urls.py

54. Modulok (csomagok)
__init__.py
conference/
__init__.py
models.py
templates/
conference.html
views.py
manage.py
registration/
[...]
settings.py
urls.py

55. Modulok (csomagok)
__init__.py
conference/
__init__.py
models.py
templates/
conference.html
views/
__init__.py
attendees.py
conferences.py
manage.py
registration/
[...]
settings.py
urls.py

56. Globális/újrahasznosítható modulok
INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.admin',
'conference',
)

57. Globális/újrahasznosítható modulok
INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.admin',
'conference',
'django_registration',
)

58. Globális/újrahasznosítható modulok
INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.admin',
'conference',
'django_registration',
'django_openid_auth',
)

59. Globális/újrahasznosítható modulok
INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.admin',
'conference',
'django_registration',
'django_openid_auth',
'django_contact_form',
)

60. from django.conf.urls.defaults import *
urlpatterns = patterns('',
(r'^/conf/(?P<conf_id>d+)/$',
'conference.views.conference_page'),
(r'^openid/',
include('django_openid_auth.urls')),
)

61. Globális/újrahasznosítható modulok
django-compressor
django-contact-form
django-db-log
django-debug-toolbar
django-extensions
django-flatblocks
django-gravatar
django-oembed
django-openid-auth
django-proxy
django-registration
django-tagging
django-timezones
django-tinymce
django-voting
django-wikiapp

62. Remixek
Pinax
(http://pinaxproject.com/)
37 django-*
Mingus
(http://github.com/montylounge/django-mingus/)
28 django-*

63. Hivatkozások
http://www.djangoproject.com/
http://docs.djangoproject.com/
http://gábor.20y.hu/django/