django 导入 xls

我直接 clone http://django-excel.readthedocs.org 里面的项目下来是没有问题，可以导入 xls 。

但是把 views.py 里面的 import_data 代码拷贝到我自己的项目中，提示

“'InMemoryUploadedFile' object has no attribute 'save_book_to_database'”

原 import_data 代码如下：

class UploadFileForm(forms.Form):
file = forms.FileField()

def import_data(request):
if request.method == "POST":
    form = UploadFileForm(request.POST,
                          request.FILES)
    if form.is_valid():
        print dir(request.FILES['file'])
        request.FILES['file'].save_book_to_database(
            models=[Question,],
            mapdicts=[
                ['question_text', 'pub_date', 'slug'],]
        )
        return HttpResponse("OK123", status=200)
    else:
        return HttpResponseBadRequest()
else:
    form = UploadFileForm()
return render_to_response(
    'upload_form.html',
    {
        'form': form,
        'title': 'Import excel data into database example',
        'header': 'Please upload sample-data.xls:'
    },
    context_instance=RequestContext(request))

我放入自己项目后修改为：
class UploadFileForm(forms.Form):
file = forms.FileField()

def import_data(request):
if request.method == "POST":
form = UploadFileForm(request.POST,
request.FILES)
if form.is_valid():
print dir(request.FILES['file'])
request.FILES['file'].save_book_to_database(
models=[host,],
mapdicts=[
['ip', 'port', 'group','env'],]
)
return HttpResponse("OK123", status=200)
else:
return HttpResponseBadRequest()
else:
form = UploadFileForm()
return render_to_response(
'upload_form.html',
{
'form': form,
'title': 'Import excel data into database example',
'header': 'Please upload sample-data.xls:'
},
context_instance=RequestContext(request))

就修改了 models 和 mapdicts 。

哪位大神帮忙解读下。问题出哪了。