Desenvolvimento web usando django

DESENVOLVIMENTO WEB USANDO

DJANGO

YURIMALHEIROS@

YURIMALHEIROS@GMAIL.COM

TECNOLOGIA

TECNOLOGIA?

TECNOLOGIA?

”“SIMPLE IS

BETTER THAN

COMPLEX

FRAMEWORKS

”

“SE VI MAISLONGE FOI POR ESTAR SOBREOS OMBROS

DE GIGANTES

UM POUCO DE

HISTÓRIA...

MODEL

VIEW

CONTROLLER

MODEL

TEMPLATE

CONTROLLER

MODEL

TEMPLATE

VIEW

CODIFICANDO

django-admin startproject mymusic

mymusic

manage.py

settings.py

urls.py

DATABASES = { 'default': { 'ENGINE': 'django.db.backends.sqlite3', 'NAME': 'db.sqlite',

'USER': '‘, 'PASSWORD': '‘, 'HOST': '‘, 'PORT': '‘, }

}

settings.py

manage.py startapp collection

collection

models.py

tests.py

views.py

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

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

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

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

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

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

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

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

settings.py

manage.py syncdb

add/

from django.conf.urls.defaults import *from collection import views as collection_views

urlpatterns = patterns('', url(r'^add/$', collection_views.add),

)

urls.py

from django.conf.urls.defaults import *from collection import views as collection_views

urlpatterns = patterns('', url(r'^add/$', collection_views.add),

)

urls.py

from django.conf.urls.defaults import *from collection import views as collection_views

urlpatterns = patterns('', url(r'^add/$', collection_views.add),

)

urls.py

from django.conf.urls.defaults import *from collection import views as collection_views

urlpatterns = patterns('', url(r'^add/$', collection_views.add),

)

urls.py

from django.conf.urls.defaults import *from collection import views as collection_views

urlpatterns = patterns('', url(r'^add/$', collection_views.add),

)

urls.py

from django.forms import ModelFormfrom collection.models import Album

class AlbumForm(ModelForm): class Meta: model = Album

exclude = (‘cover’,)

collection/forms.py

from django.forms import ModelFormfrom collection.models import Album

class AlbumForm(ModelForm): class Meta: model = Album

exclude = (‘cover’,)

collection/forms.py

from django.forms import ModelFormfrom collection.models import Album

class AlbumForm(ModelForm): class Meta: model = Album

exclude = (‘cover’,)

collection/forms.py

from django.forms import ModelFormfrom collection.models import Album

class AlbumForm(ModelForm): class Meta: model = Album

exclude = (‘cover’,)

collection/forms.py

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

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

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

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

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

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

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

else: form = AlbumForm()

return render_to_response('add.html', {'form' : form}, context_instance=RequestContext(request))

collection/views.py

else: form = AlbumForm()

return render_to_response('add.html', {'form' : form}, context_instance=RequestContext(request))

collection/views.py

else: form = AlbumForm()

return render_to_response('add.html', {'form' : form}, context_instance=RequestContext(request))

collection/views.py

else: form = AlbumForm()

return render_to_response('add.html', {'form' : form}, context_instance=RequestContext(request))

collection/views.py

else: form = AlbumForm()

return render_to_response('add.html', {'form' : form}, context_instance=RequestContext(request))

collection/views.py

settings.py

import os

PROJECT_PATH = os.path.dirname(os.path.abspath(__file__))

TEMPLATE_DIRS = (os.path.join(PROJECT_PATH, 'templates'),

)

<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

<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

<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

<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

<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

<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

<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

<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

manage.py runserver

/

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

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

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

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

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

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

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

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

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

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

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

{% for album in albums %}<p> {% if album.cover %} <img src="{{album.cover}}" /> {% endif %}

{{album.name}}<br /> {{album.artist}}<br /></p>{% endfor %}

templates/index.html

{% for album in albums %}<p> {% if album.cover %} <img src="{{album.cover}}" /> {% endif %}

{{album.name}}<br /> {{album.artist}}<br /></p>{% endfor %}

templates/index.html

{% for album in albums %}<p> {% if album.cover %} <img src="{{album.cover}}" /> {% endif %}

{{album.name}}<br /> {{album.artist}}<br /></p>{% endfor %}

templates/index.html

{% for album in albums %}<p> {% if album.cover %} <img src="{{album.cover}}" /> {% endif %}

{{album.name}}<br /> {{album.artist}}<br /></p>{% endfor %}

templates/index.html

{% for album in albums %}<p> {% if album.cover %} <img src="{{album.cover}}" /> {% endif %}

{{album.name}}<br /> {{album.artist}}<br /></p>{% endfor %}

templates/index.html

{% for album in albums %}<p> {% if album.cover %} <img src="{{album.cover}}" /> {% endif %}

{{album.name}}<br /> {{album.artist}}<br /></p>{% endfor %}

templates/index.html

delete/

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

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

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

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

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

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

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

def delete(request, album_id): album = Album.objects.get(pk=album_id) album.delete() return redirect('album_index')

collection/views.py

def delete(request, album_id): album = Album.objects.get(pk=album_id) album.delete() return redirect('album_index')

collection/views.py

def delete(request, album_id): album = Album.objects.get(pk=album_id) album.delete() return redirect('album_index')

collection/views.py

def delete(request, album_id): album = Album.objects.get(pk=album_id) album.delete() return redirect('album_index')

collection/views.py

{% 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

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