Python Django错误：字符串索引必须是整数，而不是str

获取此错误。如何更改POST表单集数据以确保图像实际得到保存

在/photos/add\u photos处键入错误/ 字符串索引必须是整数，而不是str 申请方式：邮寄 请求URL:/照片/添加照片/ Django版本：1.6.5 异常类型：TypeError 异常值：
字符串索引必须是整数，而不是str

@login_required
    def addimage(request):
        user = request.user
        blogposts = Blogpost.objects.filter(user=user)
        imageformset = formset_factory(Image, AddImageForm,extra=1)
        if request.method == "POST":
            formset = imageformset(request.POST, request.FILES)
            print formset
            if formset.is_valid() :
                for form in formset.cleaned_data:
                        image = form['image']
                        title = form['title']
                        blogpost = form['blogpost']
                        description = form['description']
                        photo = Image(
                            title = title,
                            image= image,
                            blogpost=blogpost,
                            description=description,
                            )
                        photo.user = request.user
                        photo.save()

                        messages.success(request, 'We did it. Pictures are on the interwebs!')
                        return HttpResponseRedirect("/%s/%s/" % (user, blogpost.slug))
            else:
                messages.error(request, 'Oh no! Something went wrong. Try again.')
                return HttpResponseRedirect('/photos/add_photos/')

        else:
            formset = imageformset()
            formset.fields['blogpost'].queryset = Blogpost.objects.filter(user=user)

        return render_to_response('photos/add_photos.html', {
            'formset' : formset,
            'blogpost' : blogposts,
            },
            context_instance=RequestContext(request))

---

错误在这一行：

for form in formset.cleaned_data:

实际上，您需要做的是遍历

formset.forms

，然后针对每个表单访问

cleaned\u数据

：

for form in formset:
    image = form.cleaned_data['image']
    ..etc...