既然尝试了使用class-based view,那么接下来就把项目中的function view重构一下吧.在views.py中,我们写了post_list和post_detail两个视图函数 在post_list中,我们处理了多个URL的逻辑,如果使用class-based view的话,可以使用继承来复用代码,将他们拆开. 对于post_list中的所有模板,都会显示分类导航,侧边栏和底部导航...
使用Class-based View有两种方法,一个是在as_view()中直接传入参数,它会覆盖掉该View原有的属性,这种情况只适用于处理不复杂的情况,另外一个就是直接继承该View,然后覆盖其中的方法,属性等,实现自己想要的功能,如: from django.views.generic import TemplateView class AboutView(TemplateView): template_name = "...
只用django.views.generic.View, 而不用FBV来构建所有django项目中的view也是可行的, 这也没有你所想象的那么复杂. 使用View的好处是, 我们不需要写许多内套式的if语句, 我们可以直接覆盖使用View的get(), post()等方法: fromdjango.shortcutsimportget_object_or_404,render,redirectfromdjango.views.genericimpor...
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’s generic views are built off of those base views, and were developed as a shortcut for common usage patterns such as displaying the details of an object. They take certain common idioms and patterns found in view development and abstract them so that you can quickly write common vie...
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...
1. Class-based Views 类视图并不是要替换函数视图,但是类视图可以简化代码和实现代码复用 装饰类视图 2种方式 装饰.as_view() fromdjango.contrib.auth.decoratorsimportlogin_required,permission_requiredfromdjango.views.genericimportTemplateViewfrom.viewsimportVoteView ...
url 在app的urls.py中加入一条对应的url规则: url(r'^upload/$', views.UploadRolesFormView.as_view(), name='rolesUpload'), 这样,就可以利用Django最方便的class-based views开处理文件上传的场景了。
Because Django’s URL resolver expects to send the request and associated arguments to a callable function, not a class, class-based views have anas_view()class method which returns a function that can be called when a request arrives for a URL matching the associated pattern. The function cr...
0 Type error with django class based view 0 Object must be an instance or subtype of type in django 1 calling super on base class python/django 238 Class has no objects member 4 Class has no 'objects' member in django 1 TypeError: super(type, obj): obj must ...