models.py 文件源码

def activation_key_expired( self ):
        """
        Determine whether this :class:`GroupInvitation`'s activation
        key has expired, returning a boolean -- ``True`` if the key
        has expired.

        Key expiration is determined by a two-step process:

        1. If the user has already activated, the key will have been
           reset to the string ``ALREADY_ACTIVATED``. Re-activating is
           not permitted, and so this method returns ``True`` in this
           case.

        2. Otherwise, the date the user signed up is incremented by
           the number of days specified in the setting
           ``ACCOUNT_ACTIVATION_DAYS`` (which should be the number of
           days after signup during which a user is allowed to
           activate their account); if the result is less than or
           equal to the current date, the key has expired and this
           method returns ``True``.

        """
        expiration_date = \
            datetime.timedelta( days = settings.ACCOUNT_ACTIVATION_DAYS )
        return self.activation_key == self.ACTIVATED or \
               ( self.issue_date + expiration_date <= datetime.date.today() )
    # TODO: find out and explain here what this means: