Farkas Szilveszter Magyarországi Web Konferencia Budapest, október 3.

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

Farkas Szilveszter

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

>>> import django >>> django.original_author 'Adrian Holovaty' >>> django.open_sourced datetime.date(2005, 7, 13) >>> django.version '1.1-final' >>> len(django.authors) 485

>>> django.model 'model' >>> django.view 'template' >>> django.controller 'view'

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

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')

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')

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

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)

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

from django import forms

űrlapok

űrlapok szerver oldali adatellenőrzés

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())

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):

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

from django import middlewares

process_request() process_response() process_view() process_exception()

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

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

from django import test

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)

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()

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

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)

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

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

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')

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)

$ python

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()

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()

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): [...]

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

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

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

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

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

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', )

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', )

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')), )

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

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

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