没有名为preview的模块，Django FormPreview模块

Question

我正在尝试让Django的表单预览模块示例正常工作。在polls_app/mysite/urls.py文件中：

from django.conf.urls.defaults import *
from mysite.preview import SomeModelFormPreview
from mysite.forms import SomeModelForm
from django import forms

在polls_app/mysite/SomeModelFormPreview.py文件中：

from django.contrib.formtools.preview
import FormPreview from mysite.models
import SomeModel

class SomeModelFormPreview (FormPreview):
    def done(self,request,cleaned_data):
        return HttpResponseRedirect("/form/success")

我正在按照这里的示例进行操作：http://docs.djangoproject.com/en/1.2/ref/contrib/formtools/form-preview/#module-django.contrib.formtools

这是我收到的导入错误：

ImportError at / No module named preview Request
Method:    GET
Request URL:    http://127.0.0.1:8000/
Django Version:    1.2.1
Exception Type:    ImportError
Exception Value:     No module named preview
Exception Location:    /home/adam/Desktop/polls_app/mysite/../mysite/urls.py in <module>, line 4 Python
Executable:    /usr/bin/python Python
Version:    2.6.2 Python
Path:    ['/home/adam/Desktop/polls_app/mysite',
            '/usr/lib/python2.6',
            '/usr/lib/python2.6/plat-linux2',
            '/usr/lib/python2.6/lib-tk',
            '/usr/lib/python2.6/lib-old',
            '/usr/lib/python2.6/lib-dynload',
            '/usr/lib/python2.6/dist-packages',
            '/usr/lib/python2.6/dist-packages/PIL',
            '/usr/lib/python2.6/dist-packages/gst-0.10',
            '/var/lib/python-support/python2.6',
            '/usr/lib/python2.6/dist-packages/gtk-2.0',
            '/var/lib/python-support/python2.6/gtk-2.0',
            '/usr/local/lib/python2.6/dist-packages']
Server time:    Mon, 12 Jul 2010 11:16:13 -0500

Answer 1

看起来 mysite.preview 这个东西不存在。这就是你看到的错误。可能是因为有循环引用，或者是名字写错了。