错误的电子邮件formencode验证时

Question

我想在我的项目之一，以创建一个IDN感知formencode验证程序使用。我使用的代码的一部分从Django项目（http://code.djangoproject.com/svn/django/trunk/django/core/validators.py）要做到这一点，但必须有在我的代码我一个简单的错误找不到：

class Email(formencode.validators.Email):
    def _to_python(self, value, state):
        try:
            return super(Email, self)._to_python(value, state)
        except formencode.Invalid as e:
            # Trivial case failed. Try for possible IDN domain-part

            print 'heywo !'

            if value and u'@' in value:
                parts = value.split(u'@')
                try:
                    parts[-1] = parts[-1].encode('idna')
                except UnicodeError:
                    raise e

                try:
                    super(Email, self)._to_python(u'@'.join(parts), state)
                except formencode.Invalid as ex:
                    raise ex

                return value
            else:
                raise e

当我尝试验证与IDN域的电子邮件（例如：test@wääl.de），由所述第一呼叫中提出的无效抛出异常，和代码的第一除永远不会执行后（的部分'heywo ！”从不打印）。

有是一个例子：

>>> from test.lib.validators import Email
>>> Email().to_python(u'test@zääz.de')
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/local/lib/python2.6/dist-packages/FormEncode-1.2.3dev-py2.6.egg/formencode    /api.py", line 416, in to_python
    vp(value, state)
  File "/usr/local/lib/python2.6/dist-packages/FormEncode-1.2.3dev-py2.6.egg/formencode    /validators.py", line 1352, in validate_python
    value, state)
Invalid: The domain portion of the email address is invalid (the portion after the @: z\xe4\xe4z.de)

我做了什么错？

感谢。

Answer 1

好，找到了答案。我是超载_to_python的validate_python代替。类现在看起来像：

class Email(formencode.validators.Email):
    def validate_python(self, value, state):
        try:
            super(Email, self).validate_python(value, state)
        except formencode.Invalid as e:
            # Trivial case failed. Try for possible IDN domain-part
            if value and u'@' in value:
                parts = value.split(u'@')
                try:
                    parts[-1] = parts[-1].encode('idna')
                except UnicodeError:
                    raise e

                try:
                    super(Email, self).validate_python(u'@'.join(parts), state)
                except formencode.Invalid as ex:
                    raise ex
            else:
                raise e

它的工作完美：）