Question

我正在尝试创建一个Web应用程序，用户将选择一个文件，处理数据，然后重定向到带有url参数的确认页面（？status = 1）如何从处理视图移动到确认视图然后显示确认页面？
我把下面的代码放在我的视图和urls py文件

中

# views.py
def marketdata_processing(request):
    if request.method == 'POST':
        uploadform = forms.MyUploadForm(request.POST, request.FILES)
        if uploadform.is_valid():
            newdoc = models.UploadDocument(docfile=request.FILES['uploadfile'])
            filename = request.FILES['uploadfile'].name
            newdoc.save()
            selecteddate = newdoc.getselecteddate()  # Model method calculated
            fileid = newdoc.pk
            request.session['fileid'] = fileid
            request.session['selecteddate'] = selecteddate
            return redirect(reverse('views.confirm_input_details'))
    else:
        uploadform = forms.MyUploadForm()
   # Render list page with the documents and the form
    return render_to_response(
        'mytemplate.html',
        {'uploadform': uploadform},
        context_instance=RequestContext(request)
    )


def confirm_input_details(request):
    fileid = request.session['fileid']
    selecteddate = request.session['selecteddate']
    msg = 'Proceed to import data for %s? \nFileID Being Imported is %s ' % (
        selecteddate, fileid,)
    url = reverse('views.confirm_input_details', kwargs={'status': 1})
    return HttpResponseRedirect(url)

# urls.py
urlpatterns = [
    url(r'', views.marketdata_processing, name='myapp/mytemplate.html'),
    url(r'^\?status=(?P<status>[0-9]+)$',
        views.confirm_input_details, name='myapp/myconfirmpage.html'),
]

Answer 1

我认为代码中存在一些问题：

缩进是python代码中非常重要的事情。请确保'marketdata_processing'视图中if-else语句的缩进顺序正确。请注意，在您的代码中：

return render_to_response('mytemplate.html',
                         {'uploadform': uploadform},
                         context_instance=RequestContext(request))

将始终执行，因为它在else语句之外。你可能想在else下缩进它（如果有意义的话） - 就像这样：

else:
    uploadform = forms.MyUploadForm()
    return render_to_response('mytemplate.html',
                             {'uploadform': uploadform},
                             context_instance=RequestContext(request))

而不是'redirect（reverse（））'在处理视图中尝试'HttpResponseRedirect（）'来调用确认页面视图，如下所示：
```
from django.http import HttpResponseRedirect

return HttpResponseRedirect('/?status=1')       --> relative URL shown
```
将相对/绝对网址（两者都可以）放在上面。

最后，使用上下文参数在“confirm_input_details”视图中呈现您的确认页面模板，如下所示：

   def confirm_input_details(request):
       fileid = request.session['fileid']
       selecteddate = request.session['selecteddate']
       msg = 'Proceed to import data for %s? \nFileID Being Imported is %s ' % (selecteddate, fileid)

       return render_to_response('confirmpage_template.html'),
                                {'fileid': fileid,
                                 'selecteddate': selecteddate,
                                 'msg': msg}, context_instance=RequestContext(request))

** P.S：坚持整洁的基础知识，它会起作用。您碰巧在同一视图中调用了confirm_input_details视图。据我所知，这可能会让你陷入无限循环。任何观点的简单概念是：

    take input:request, parameters 
     --> process logic with parameters 
      --> render a specific template or call another url where a template is being rendered.

如果没有渲染模板，您不能指望页面显示。

Django工作流程从一个视图重定向到另一个视图，并显示带有url参数的页面

1 个答案: