Class-based views¶ A view is a callable which takes a request and returns a response. This can be more than just a function, and Django provides an example of some classes which can be used as views. These allow you to structure your views and reuse code by harnessing inheritance and...
Django 自动为我们处理了查询、分页等功能。通过使用通用视图,我们避免了重复的代码,提高了开发效率。 步骤5:混入(Mixins)增加复用性 Django 的 CBV 还支持混入(Mixins),它是实现代码复用的另一种方式。混入是一种将功能模块化并复用的方法,可以将一个或多个功能分散到不同的类中。 # views.py from django.ht...
class based view 代码更简洁 简单样例 version 1 #urls.pyfromdjango.conf.urlsimporturlfrommysiteimportviews as my_view urlpatterns=[ url(r'^about/', my_view.about), ]#mysite/views.pyfromdjango.shortcutsimportrenderdefabout(request):returnrender(request,'about.html') 基本的function based view v...
而在class-based views中,你可以用不同的类实例的方法来响应不同的HTTP request,如: fromdjango.httpimportHttpResponsefromdjango.views.generic.baseimportViewclassMyView(View):defget(self, request):#<view logic>returnHttpResponse('result')defpost(self, request):#<view logic>returnHttpResponse('result')...
Class-based views基于类的视图 视图是可调用的,它接受请求并返回响应。 这不仅仅是一个功能,而Django提供了一些可以用作视图的类的例子。 这些允许您通过利用继承和混合来构建视图和重用代码。 还有一些简单的任务的一般观点,我们稍后会介绍,但是您可能需要设计自己的可重用视图结构,以适合您的用例。 有关完整的详细...
Django’s built-in class-based views provide a lot of functionality, but some of it you may want to use separately. For instance, you may want to write a view that renders a template to make the HTTP response, but you can’t useTemplateView; perhaps you need to render a template only...
from django.shortcuts import render def level1(request) return(request,'XXX.html') 没有经过任何处理,直接指向一个 html。 这个步骤,完全可以通过 Class-Based Views 简化为: # url.py fromdjango.conf.urls import url from django.views.generic import TemplateView # 引入 TemplateView ...
Using class-based views使用基于类的视图 基于类的视图允许您使用不同的类实例方法来响应不同的HTTP请求方法,而不是在单个视图函数中有条件地分支代码。 那么处理视图函数中的HTTP GET的代码将如下所示: from django.http import HttpResponse def my_view(request): ...
对于这些场景,Django提供了几个class-based view来处理: ListView UpdateView CreateView DeleteView 这几个类视图分别对应着查询ListView、更新UpdateView、创建CreateView、删除DeleteView这几个操作。在整体上就可以分为查看、修改两个类型。下面,我们来通过一个例子来展现一下这几个View怎么使用。假设我们需要实现一个用...
So I think I have a possible fix, but I'm not yet set up for contributing to Django so I haven't run the test suite on it. Preliminary testing appeared to work. I would be interested in hearing others thoughts before investing more time into this. <snip> The callable_view would co...