如何将参数传递给django通用视图 [英] How to pass parameters to django generic views
问题描述
我想传递一个数字到我的通用视图(DetailView)获取一个对象这是我的代码
Urlpattern
(r'^ newreportview /(?P< number> \w +)/ $',NewReportView.as_view()),
查看类
class NewReportView
template_name =report / newreportview.html
context_object_name =newreportview
def get_queryset(self):
task = get_object_or_404(MyTask,applicationnnumber = self.args [0])
返回任务
我猜这行中有错误
name = get_object_or_404(MyTask,applicationnnumber = self.args [0])
错误信息:
异常类型:IndexError
异常值:
元组索引超出范围
我应该如何将数字传递给通用视图并获取Mytask对于这个'数字'?
谢谢
错过了整个观点的整体观点。对于一个简单的DetailView - 它是单个对象的视图 - 您只需定义模型
和 slug
属性类:
(r'^ newreportview /(\d +)/ $',NewReportView.as_view()),
class NewReportView(DetailView):
template_name =report / newreportview.html
model = MyTask
slug ='applicationnnumber'
(您也可以轻松地将这三个作为参数传递到URL定义中,因此无需再创建一个子类。 / p>
您没有获得 self.args
的值的原因是您已将参数作为kwarg传递,不是一个参数。所以 self.kwargs ['number']
将会工作,我在这里显示的修改后的URL也是如此。
I would like to pass a number to my generic view (DetailView) to get one object Here is my code
Urlpattern
(r'^newreportview/(?P<number>\w+)/$', NewReportView.as_view()),
View Class
class NewReportView(DetailView):
template_name = "report/newreportview.html"
context_object_name = "newreportview"
def get_queryset(self):
task= get_object_or_404(MyTask,applicationnnumber=self.args[0])
return task
I guess something is wrong in this line
name = get_object_or_404(MyTask,applicationnnumber=self.args[0])
error message:
Exception Type: IndexError
Exception Value:
tuple index out of range
How should I pass 'number' to this generic view and get a Mytask object with this 'number'?
Thanks
You have missed the entire point of generic views. For a simple DetailView - which is a view of a single object - you just define the model
and slug
attributes in the class:
(r'^newreportview/(\d+)/$', NewReportView.as_view()),
class NewReportView(DetailView):
template_name = "report/newreportview.html"
model = MyTask
slug = 'applicationnnumber'
(You could also just as easily have passed those three as parameters in the URL definition, so no need to make a subclass at all.)
The reason why you were getting no values for self.args
is that you had passed your parameter as a kwarg, not an arg. So self.kwargs['number']
would have worked, as would the revised URL I've shown here.
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