Intro To Django

Slides to a talk given by Sean O'Connor at the NYLUG.

Transcript

1. Sean O’Connor @theSeanOC
2. Who is this guy?
4. D J A N G O N Y C
11. Web Application Framework
12. gph.is/VwXYWP
14. flickr.com/photos/lungstruck/9282575739
15. flickr.com/photos/gavinbell/8148213376
16. flickr.com/photos/lostvegas/2214183472
17. flickr.com/photos/skinnylawyer/6963788981
18. flickr.com/photos/_mia/9444997616
19. flickr.com/photos/wheatfields/118700012
20. j.mp/1aAUd5D
21. flickr.com/photos/doug88888/6097007477
22. flickr.com/photos/armchairbuilder/6198714006
23. flickr.com/photos/pauldineen/4049601480
24. flickr.com/photos/9731367@N02/6988181354
25. flickr.com/photos/96584021@N05/8996280560
26. flickr.com/photos/cubicgarden/3280483306
27. flickr.com/photos/doug88888/4718612162
28. flickr.com/photos/nocklebeast/2334963027
29. flickr.com/photos/furlined/5721248693
30. flickr.com/photos/sparr0/4391464964
31. flickr.com/photos/horiavarlan/4268896468
32. flickr.com/photos/dia-a-dia/7046151669
33. flickr.com/photos/36593372@N04/8172275651
34. “Easy things should be easy, and hard things should be possible.” Larry Wall
35. “It’s just Python”
36. ORM
37. from django.db import models ! class Person(models.Model): first_name = models.CharField(max_length=30) last_name = models.CharField(max_length=30)
38. from myapp.models import Person ! chauncey = Person.objects.create(first_name="Chauncey", last_name="McPufferson") print chauncey.first_name chauncey.last_name = "McPufferson" chauncey.save() chauncey.delete()
39. from myapp.models import Person ! person = Person.objects.get(id=1) bobs = Person.objects.filter(first_name="Bob") obs = Person.objects.raw( "SELECT * FROM myapp_person WHERE first_name LIKE '%ob%'")
40. Routes
41. from django.conf.urls import patterns, include, url ! from polls import views ! urlpatterns = patterns('', # ex: /polls/ url(r'^$', views.index, name=‘index'), ! ! ! ! ! ! ! ! ) # ex: /polls/5/ url(r'^(?P<poll_id>\d+)/$', views.detail, name=‘detail'), # ex: /polls/5/results/ url(r'^(?P<poll_id>\d+)/results/$', views.results, name=‘results'), # ex: /polls/special/* url(r'^special/', include('polls.special.urls')),
42. from django.core.urlresolvers import reverse ! reverse('detail', kwargs={'poll_id': 5})
43. Views
44. from django.shortcuts import render from polls.models import Poll ! ! ! def index(request): ! ! latest_poll_list = Poll.objects.all().order_by('-pub_date')[:5] ! ! context = {'latest_poll_list': latest_poll_list} ! ! return render(request, 'polls/index.html', context)
45. from django.shortcuts import render, get_object_or_404 from polls.models import Poll ! ! ! ! def detail(request, poll_id): ! ! poll = get_object_or_404(Poll, pk=poll_id) ! ! return render(request, 'polls/detail.html', {'poll': poll})
46. from django.views.generic import ListView from polls.models import Poll ! ! ! class PollList(ListView): model = Poll
47. Templates
48. <h1>{{ poll.question }}</h1> ! <ul> {% for choice in poll.choice_set.all %} ! <li>{{ choice.choice_text }}</li> ! {% endfor %} </ul>
49. Forms
50. from django import forms ! ! class ContactForm(forms.Form): ! subject = forms.CharField(max_length=100) message = forms.CharField() sender = forms.EmailField() cc_myself = forms.BooleanField(required=False)
51. <form action="/contact/" method=“post"> ! {{ form.as_p }} ! <input type="submit" value="Submit" /> ! </form>
52. <form action="/contact/" method=“post"> ! <p><label for="id_subject">Subject:</label> <input id="id_subject" type="text" name="subject" maxlength="100" /></p> ! <p><label for="id_message">Message:</label> <input type="text" name="message" id="id_message" /></p> ! <p><label for="id_sender">Sender:</label> <input type="email" name="sender" id="id_sender" /></p> ! <p><label for="id_cc_myself">Cc myself:</label> <input type="checkbox" name="cc_myself" id="id_cc_myself" /></p> ! <input type="submit" value="Submit" /> ! </form>
53. from django.shortcuts import render from django.http import HttpResponseRedirect ! def contact(request): if request.method == 'POST': form = ContactForm(request.POST) if form.is_valid(): # Process the data in form.cleaned_data # ... return HttpResponseRedirect('/thanks/') else: form = ContactForm() ! return render(request, 'contact.html', { 'form': form, })
54. Admin
56. Security
57. Testing
58. Internationalization
59. Authenitcation
60. Caching
61. Logging
62. Email Sending
63. RSS
64. Messaging
65. Site Maps
66. Static Files
67. flickr.com/photos/velkr0/3472576304
68. djangoproject.com
70. #django
71. django-users
72. D J A N G O N Y C djangonyc.org
73. us.pycon.org
74. gettingstartedwithdjango.com
75. django.2scoops.org
76. LearnPythonTheHardWay.org
77. djangopackages.com
78. Shameless Plug
79. We’re hiring!
81. Questions?