The document describes building a web application for managing an album collection using the Django web framework. It shows how to create a Django project and app, define a model for albums, build forms and views to add, display, and delete albums. Templates are used to display the form and album listing. The application allows users to add albums with details, see a list of all albums, and delete albums from the collection.

1. DESENVOLVIMENTO
WEB USANDO
DJANGO

2. YURIMALHEIROS@

3. YURIMALHEIROS
@GMAIL.COM

4. TECNOLOGIA

5. TECNOLOGIA?

7. TECNOLOGIA?

14. SIMPLE IS
BETTER THAN
COMPLEX

15. FRAMEWORKS

16. ”
“SE VI MAIS
LONGE FOI POR
ESTAR SOBRE
OS OMBROS
DE GIGANTES

18. UM POUCO DE
HISTÓRIA...

19. MODEL
VIEW
CONTROLLER

20. MODEL
TEMPLATE
CONTROLLER

21. MODEL
TEMPLATE
VIEW

22. CODIFICANDO

23. django-admin startproject mymusic

24. mymusic
manage.py
settings.py
urls.py

25. DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': 'db.sqlite',
'USER': '‘,
'PASSWORD': '‘,
'HOST': '‘,
'PORT': '‘, }
}
settings.py

26. manage.py startapp collection

27. collection
models.py
tests.py
views.py

28. from django.db import models
class Album(models.Model):
artist = models.CharField(max_length=200)
name = models.CharField(max_length=200)
year = models.IntegerField()
cover = models.URLField(verify_exists=False,
blank=True)
def __unicode__(self):
return "%s by %s" % (self.name, self.artist)
collection/models.py

29. from django.db import models
class Album(models.Model):
artist = models.CharField(max_length=200)
name = models.CharField(max_length=200)
year = models.IntegerField()
cover = models.URLField(verify_exists=False,
blank=True)
def __unicode__(self):
return "%s by %s" % (self.name, self.artist)
collection/models.py

30. from django.db import models
class Album(models.Model):
artist = models.CharField(max_length=200)
name = models.CharField(max_length=200)
year = models.IntegerField()
cover = models.URLField(verify_exists=False,
blank=True)
def __unicode__(self):
return "%s by %s" % (self.name, self.artist)
collection/models.py

31. from django.db import models
class Album(models.Model):
artist = models.CharField(max_length=200)
name = models.CharField(max_length=200)
year = models.IntegerField()
cover = models.URLField(verify_exists=False,
blank=True)
def __unicode__(self):
return "%s by %s" % (self.name, self.artist)
collection/models.py

32. from django.db import models
class Album(models.Model):
artist = models.CharField(max_length=200)
name = models.CharField(max_length=200)
year = models.IntegerField()
cover = models.URLField(verify_exists=False,
blank=True)
def __unicode__(self):
return "%s by %s" % (self.name, self.artist)
collection/models.py

33. from django.db import models
class Album(models.Model):
artist = models.CharField(max_length=200)
name = models.CharField(max_length=200)
year = models.IntegerField()
cover = models.URLField(verify_exists=False,
blank=True)
def __unicode__(self):
return "%s by %s" % (self.name, self.artist)
collection/models.py

34. from django.db import models
class Album(models.Model):
artist = models.CharField(max_length=200)
name = models.CharField(max_length=200)
year = models.IntegerField()
cover = models.URLField(verify_exists=False,
blank=True)
def __unicode__(self):
return "%s by %s" % (self.name, self.artist)
collection/models.py

35. INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'collection',
)
settings.py

36. manage.py syncdb

37. add/

38. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^add/$', collection_views.add),
)
urls.py

39. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^add/$', collection_views.add),
)
urls.py

40. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^add/$', collection_views.add),
)
urls.py

41. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^add/$', collection_views.add),
)
urls.py

42. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^add/$', collection_views.add),
)
urls.py

43. from django.forms import ModelForm
from collection.models import Album
class AlbumForm(ModelForm):
class Meta:
model = Album
exclude = (‘cover’,)
collection/forms.py

44. from django.forms import ModelForm
from collection.models import Album
class AlbumForm(ModelForm):
class Meta:
model = Album
exclude = (‘cover’,)
collection/forms.py

45. from django.forms import ModelForm
from collection.models import Album
class AlbumForm(ModelForm):
class Meta:
model = Album
exclude = (‘cover’,)
collection/forms.py

46. from django.forms import ModelForm
from collection.models import Album
class AlbumForm(ModelForm):
class Meta:
model = Album
exclude = (‘cover’,)
collection/forms.py

47. def add(request):
if request.method == 'POST':
form = AlbumForm(data=request.POST)
if form.is_valid():
album = Album()
album.name = form.cleaned_data['name']
album.artist =
form.cleaned_data['artist']
album.year = form.cleaned_data['year']
album.cover = get_cover_url(album.artist,
album.name)
album.save()
collection/views.py

48. def add(request):
if request.method == 'POST':
form = AlbumForm(data=request.POST)
if form.is_valid():
album = Album()
album.name = form.cleaned_data['name']
album.artist =
form.cleaned_data['artist']
album.year = form.cleaned_data['year']
album.cover = get_cover_url(album.artist,
album.name)
album.save()
collection/views.py

49. def add(request):
if request.method == 'POST':
form = AlbumForm(data=request.POST)
if form.is_valid():
album = Album()
album.name = form.cleaned_data['name']
album.artist =
form.cleaned_data['artist']
album.year = form.cleaned_data['year']
album.cover = get_cover_url(album.artist,
album.name)
album.save()
collection/views.py

50. def add(request):
if request.method == 'POST':
form = AlbumForm(data=request.POST)
if form.is_valid():
album = Album()
album.name = form.cleaned_data['name']
album.artist =
form.cleaned_data['artist']
album.year = form.cleaned_data['year']
album.cover = get_cover_url(album.artist,
album.name)
album.save()
collection/views.py

51. def add(request):
if request.method == 'POST':
form = AlbumForm(data=request.POST)
if form.is_valid():
album = Album()
album.name = form.cleaned_data['name']
album.artist =
form.cleaned_data['artist']
album.year = form.cleaned_data['year']
album.cover = get_cover_url(album.artist,
album.name)
album.save()
collection/views.py

52. def add(request):
if request.method == 'POST':
form = AlbumForm(data=request.POST)
if form.is_valid():
album = Album()
album.name = form.cleaned_data['name']
album.artist =
form.cleaned_data['artist']
album.year = form.cleaned_data['year']
album.cover = get_cover_url(album.artist,
album.name)
album.save()
collection/views.py

53. def add(request):
if request.method == 'POST':
form = AlbumForm(data=request.POST)
if form.is_valid():
album = Album()
album.name = form.cleaned_data['name']
album.artist =
form.cleaned_data['artist']
album.year = form.cleaned_data['year']
album.cover = get_cover_url(album.artist,
album.name)
album.save()
collection/views.py

54. else:
form = AlbumForm()
return render_to_response('add.html', {'form' :
form}, context_instance=RequestContext(request))
collection/views.py

55. else:
form = AlbumForm()
return render_to_response('add.html', {'form' :
form}, context_instance=RequestContext(request))
collection/views.py

56. else:
form = AlbumForm()
return render_to_response('add.html', {'form' :
form}, context_instance=RequestContext(request))
collection/views.py

57. else:
form = AlbumForm()
return render_to_response('add.html', {'form' :
form}, context_instance=RequestContext(request))
collection/views.py

58. else:
form = AlbumForm()
return render_to_response('add.html', {'form' :
form}, context_instance=RequestContext(request))
collection/views.py

59. settings.py
import os
PROJECT_PATH =
os.path.dirname(os.path.abspath(__file__))
TEMPLATE_DIRS = (
os.path.join(PROJECT_PATH, 'templates'),
)

60. <form action="." method="post"
enctype="multipart/form-data">
{% csrf_token %}
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }}
{{ field.label_tag }}: {{ field }}
</div>
{% endfor %}
<p><button type="submit">Adicionar</button></p>
</form>
templates/add.html

61. <form action="." method="post"
enctype="multipart/form-data">
{% csrf_token %}
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }}
{{ field.label_tag }}: {{ field }}
</div>
{% endfor %}
<p><button type="submit">Adicionar</button></p>
</form>
templates/add.html

62. <form action="." method="post"
enctype="multipart/form-data">
{% csrf_token %}
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }}
{{ field.label_tag }}: {{ field }}
</div>
{% endfor %}
<p><button type="submit">Adicionar</button></p>
</form>
templates/add.html

63. <form action="." method="post"
enctype="multipart/form-data">
{% csrf_token %}
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }}
{{ field.label_tag }}: {{ field }}
</div>
{% endfor %}
<p><button type="submit">Adicionar</button></p>
</form>
templates/add.html

64. <form action="." method="post"
enctype="multipart/form-data">
{% csrf_token %}
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }}
{{ field.label_tag }}: {{ field }}
</div>
{% endfor %}
<p><button type="submit">Adicionar</button></p>
</form>
templates/add.html

65. <form action="." method="post"
enctype="multipart/form-data">
{% csrf_token %}
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }}
{{ field.label_tag }}: {{ field }}
</div>
{% endfor %}
<p><button type="submit">Adicionar</button></p>
</form>
templates/add.html

66. <form action="." method="post"
enctype="multipart/form-data">
{% csrf_token %}
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }}
{{ field.label_tag }}: {{ field }}
</div>
{% endfor %}
<p><button type="submit">Adicionar</button></p>
</form>
templates/add.html

67. <form action="." method="post"
enctype="multipart/form-data">
{% csrf_token %}
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }}
{{ field.label_tag }}: {{ field }}
</div>
{% endfor %}
<p><button type="submit">Adicionar</button></p>
</form>
templates/add.html

68. manage.py runserver

70. /

71. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
)
urls.py

72. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
)
urls.py

73. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
)
urls.py

74. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
)
urls.py

75. def index(request):
albums = Album.objects.all().order_by('name')
return render_to_response('index.html', {'albums'
: albums}, context_instance=RequestContext(request))
collection/views.py

76. def index(request):
albums = Album.objects.all().order_by('name')
return render_to_response('index.html', {'albums'
: albums}, context_instance=RequestContext(request))
collection/views.py

77. def index(request):
albums = Album.objects.all().order_by('name')
return render_to_response('index.html', {'albums'
: albums}, context_instance=RequestContext(request))
collection/views.py

78. def index(request):
albums = Album.objects.all().order_by('name')
return render_to_response('index.html', {'albums'
: albums}, context_instance=RequestContext(request))
collection/views.py

79. def index(request):
albums = Album.objects.all().order_by('name')
return render_to_response('index.html', {'albums'
: albums}, context_instance=RequestContext(request))
collection/views.py

80. def index(request):
albums = Album.objects.all().order_by('name')
return render_to_response('index.html', {'albums'
: albums}, context_instance=RequestContext(request))
collection/views.py

81. def index(request):
albums = Album.objects.all().order_by('name')
return render_to_response('index.html', {'albums'
: albums}, context_instance=RequestContext(request))
collection/views.py

82. {% for album in albums %}
<p>
{% if album.cover %}
<img src="{{album.cover}}" />
{% endif %}
{{album.name}}<br />
{{album.artist}}<br />
</p>
{% endfor %}
templates/index.html

83. {% for album in albums %}
<p>
{% if album.cover %}
<img src="{{album.cover}}" />
{% endif %}
{{album.name}}<br />
{{album.artist}}<br />
</p>
{% endfor %}
templates/index.html

84. {% for album in albums %}
<p>
{% if album.cover %}
<img src="{{album.cover}}" />
{% endif %}
{{album.name}}<br />
{{album.artist}}<br />
</p>
{% endfor %}
templates/index.html

85. {% for album in albums %}
<p>
{% if album.cover %}
<img src="{{album.cover}}" />
{% endif %}
{{album.name}}<br />
{{album.artist}}<br />
</p>
{% endfor %}
templates/index.html

86. {% for album in albums %}
<p>
{% if album.cover %}
<img src="{{album.cover}}" />
{% endif %}
{{album.name}}<br />
{{album.artist}}<br />
</p>
{% endfor %}
templates/index.html

87. {% for album in albums %}
<p>
{% if album.cover %}
<img src="{{album.cover}}" />
{% endif %}
{{album.name}}<br />
{{album.artist}}<br />
</p>
{% endfor %}
templates/index.html

89. delete/

90. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
url(r'^delete/(?P<album_id>d+)/$',
collection_views.delete,
name='album_delete'),
)
urls.py

91. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
url(r'^delete/(?P<album_id>d+)/$',
collection_views.delete,
name='album_delete'),
)
urls.py

92. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
url(r'^delete/(?P<album_id>d+)/$',
collection_views.delete,
name='album_delete'),
)
urls.py

93. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
url(r'^delete/(?P<album_id>d+)/$',
collection_views.delete,
name='album_delete'),
)
urls.py

94. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
url(r'^delete/(?P<album_id>d+)/$',
collection_views.delete,
name='album_delete'),
)
urls.py

95. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
url(r'^delete/(?P<album_id>d+)/$',
collection_views.delete,
name='album_delete'),
)
urls.py

96. from django.conf.urls.defaults import *
from collection import views as collection_views
urlpatterns = patterns('',
url(r'^$', collection_views.index,
name='album_index'),
url(r'^add/$', collection_views.add),
url(r'^delete/(?P<album_id>d+)/$',
collection_views.delete,
name='album_delete'),
)
urls.py

97. def delete(request, album_id):
album = Album.objects.get(pk=album_id)
album.delete()
return redirect('album_index')
collection/views.py

98. def delete(request, album_id):
album = Album.objects.get(pk=album_id)
album.delete()
return redirect('album_index')
collection/views.py

99. def delete(request, album_id):
album = Album.objects.get(pk=album_id)
album.delete()
return redirect('album_index')
collection/views.py

100. def delete(request, album_id):
album = Album.objects.get(pk=album_id)
album.delete()
return redirect('album_index')
collection/views.py

101. {% for album in albums %}
<p>
{% if album.cover %}
<img src="{{album.cover}}" />
{% endif %}
{{album.name}}<br />
{{album.artist}}<br />
<a href={% url album_delete album.pk
%}>apagar</a>
</p>
{% endfor %}
templates/index.html

104. GITHUB.COM/
YURIMALHEIROS

105. BÁSICO

106. PYTHON

107. FERRAMENTA

108. COMUNIDADE

109. BOA ESCOLHA :)

110. DÚVIDAS?