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django cbv
django 提供了一系列现成的类视图，他们都继承自一个 View 基类（django.views.generic.base.View）。在这个基类里实现了与 URLs 的接口（as_view）、请求方法匹配（dispatch）和一些其他的基本功能。比如 RedirectView 实现了一个简单的 HTTP 重定向，TemplateView 给 View 添加了一个渲染模板的功能。
简单用法：
from django.conf.urls import patternsfrom django.views.generic import TemplateViewurlpatterns = patterns(‘‘, (r‘^about/‘, TemplateView.as_view(template_name="about.html")),)
子类化通用视图，
一个 AboutView，他覆盖了 TemplateView 的模板属性和获取 Context 方法（这是使用 TemplateView 的一般做法）：
from django.views.generic import TemplateViewclass AboutView(TemplateView): template_name = "about.html" def get_context_data(self, **kwargs): context = super().get_context_data(**kwargs) #alter context return context
ListView:
from django.views.generic import ListViewfrom books.models import Publisherclass PublisherList(ListView): model = Publisher
它会自动去寻找publiser_list.html页面作为模板，并在里面渲染{{publisher_list}}作为变量.
对数据模型进行筛选：
from django.views.generic import ListViewfrom books.models import Bookclass BookList(ListView): queryset = Book.objects.order_by(‘-publication_date‘) context_object_name = ‘book_list‘
如果要进行传参的话：
# urls.pyfrom django.conf.urls import patternsfrom books.views import PublisherBookListurlpatterns = patterns(‘‘, (r‘^books/([\w-]+)/$‘, PublisherBookList.as_view()),)# views.pyfrom django.shortcuts import get_object_or_404from django.views.generic import ListViewfrom books.models import Book, Publisherclass PublisherBookList(ListView): template_name = ‘books/books_by_publisher.html‘ def get_queryset(self): self.publisher = get_object_or_404(Publisher, name=self.args[0]) return Book.objects.filter(publisher=self.publisher)
保存时候的小动作：
# models.pyfrom django.db import modelsclass Author(models.Model): salutation = models.CharField(max_length=10) name = models.CharField(max_length=200) email = models.EmailField() headshot = models.ImageField(upload_to=‘author_headshots‘) last_accessed = models.DateTimeField()#URLConffrom django.conf.urls import patterns, urlfrom books.views import AuthorDetailViewurlpatterns = patterns(‘‘, #... url(r‘^authors/(?P<pk>\d+)/$‘, AuthorDetailView.as_view(), name=‘author-detail‘),)#Viewfrom django.views.generic import DetailViewfrom django.utils import timezonefrom books.models import Authorclass AuthorDetailView(DetailView): queryset = Author.objects.all() def get_object(self): # Call the superclass object = super(AuthorDetailView, self).get_object() # Record the last accessed date object.last_accessed = timezone.now() object.save() # Return the object return object
包含post,get方法：
from django.http import HttpResponsefrom django.views.generic import Viewclass MyView(View): def get(self, request): # <view logic> return HttpResponse(‘result‘)
一个简单的contact form
# forms.pyfrom django import formsclass ContactForm(forms.Form): name = forms.CharField() message = forms.CharField(widget=forms.Textarea) def send_email(self): # 使用 self.cleaned_data 字典来发送一封邮件 pass# views.pyfrom myapp.forms import ContactFormfrom django.views.generic.edit import FormViewclass ContactView(FormView): template_name = ‘contact.html‘ form_class = ContactForm success_url = ‘/thanks/‘ def form_valid(self, form): # 当有效的数据被 POST 进来以后，本方法就会被调用 # 本方法应当返回一个 HttpResponse. form.send_email() return super(ContactView, self).form_valid(form)
转载自http://www.pythontip.com/blog/post/12172/
一个简单的view
django cbv
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