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
我已经把我的代码放在下面,这在我的视图和urls py文件中不起作用
# 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'),
]
我觉得您的代码中存在几个问题:
-
缩进在python代码中是一件非常重要的事情。请确保"市场数据处理"视图中if-else语句的缩进顺序正确。小心,在你的代码中:
return render_to_response('mytemplate.html', {'uploadform': uploadform}, context_instance=RequestContext(request))
将始终在else语句之外执行。你可能想把它缩进到else下面(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))
-
在处理视图中尝试"HttpResponseRedirect()"来调用确认页面视图,而不是"redirect(reverse())",如下所示:
from django.http import HttpResponseRedirect return HttpResponseRedirect('/?status=1') --> relative URL shown
将相对/绝对url(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:坚持简洁的基础,它会起作用的。您碰巧在同一视图中调用了confirm_input_details视图。在我看来,这可能会把你带入一个无限循环。任何视图的简单概念都是:
take input:request, parameters
--> process logic with parameters
--> render a specific template or call another url where a template is being rendered.
若不呈现模板,就不能期望页面显示出来。