Django 博客评论系统 (三) : 用邮件通知回复

from django_comments.moderation import CommentModerator, moderator
class ArticleModerator(CommentModerator):
    email_notification = True
    # 指明博客 Article 模型中作为是否禁止评论的属性
    enable_field = 'enable_comments'

    def email(self, comment, content_object, request):
        """
        Send email notification of a new comment to site staff when email
        notifications have been requested.

        """
        if not self.email_notification:
            return
        # 默认把所有 settings.py 中的 MANAGERS 添加到收件人中
        recipient_list = [manager_tuple[1] for manager_tuple in settings.MANAGERS]
        site = get_current_site(request)
        subject = u'[%s] New comment posted on "%s"' % (site.name, content_object)
        message = render_to_string(
            'comments/comment_notification_email.txt',
            {
                'site' : site,
                'comment': comment,
                'content_object': content_object,
            }
        )
        # Add the users of the parent comments
        # 这里是为了递归向上把该条评论所回复的所有祖先评论的用户都加入到通知列表中
        pp = comment.parent
        while pp:
            mail_addr = pp.user_email
            if not mail_addr and pp.user and pp.user.email:
                mail_addr = pp.user.email
            if mail_addr and not mail_addr in recipient_list:
                recipient_list.append(mail_addr)
            pp = pp.parent
        # 注意！更新于 2016 年 07 月 29 日，由于 send_mail 会导致 recipient_list 中所有对象全部显示在
        # 发送至列表中，这样会将别人的邮件地址暴露给他人，这样不够注重隐私，所以改为 send_mass_mail
        # send_mail(subject, message, settings.DEFAULT_FROM_EMAIL, recipient_list, fail_silently=True)
        data_tuple = (
            (subject, message, settings.DEFAULT_FROM_EMAIL, [recipient, ]) for recipient in recipient_list
        )
        send_mass_mail(data_tuple, fail_silently=True)

moderator.register(Article, ArticleModerator)

ADMINS = (
    ('Your Name', 'your_email@example.com'),
)

A comment has been posted on {{ site.name }} {{ content_object }}.
The comment reads as follows:

Comment:
{{ comment.comment }}

----
You have the following options available:
  View comment    -- http://{{ site.domain }}{{ comment.get_absolute_url }}