当 Django 生成 500 错误时，是否可以向管理员发送的电子邮件中添加标题？

Question

当 Django 生成 500 错误时，是否可以向管理员发送的电子邮件中添加标题？

pythondjangoemail

5

我正在使用第三方发送电子邮件，他们允许我通过添加邮件头将我的电子邮件分类。

在发送异常电子邮件之前是否可以添加一个邮件头？或者至少，我将通过在中间件中捕获异常来管理发送电子邮件，但是如何生成Django在500时发送给我的漂亮电子邮件响应？

编辑：我知道如何添加电子邮件头，我知道如何通过中间件处理异常。我想知道如何生成与Django在出现异常时发送的相同的电子邮件，以便我可以添加一个邮件头。

- MattoTodd

1个回答

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- charlax · Accepted Answer

子类化 AdminEmailHandler（定义在django.utils.log中）。
相应地配置日志记录。

这是AdminEmailHandler的工作原理：

class AdminEmailHandler(logging.Handler):
    """An exception log handler that emails log entries to site admins.

    If the request is passed as the first argument to the log record,
    request data will be provided in the email report.
    """

    def __init__(self, include_html=False):
        logging.Handler.__init__(self)
        self.include_html = include_html

    def emit(self, record):
        try:
            request = record.request
            subject = '%s (%s IP): %s' % (
                record.levelname,
                (request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS and 'internal' or 'EXTERNAL'),
                record.msg
            )
            filter = get_exception_reporter_filter(request)
            request_repr = filter.get_request_repr(request)
        except:
            subject = '%s: %s' % (
                record.levelname,
                record.getMessage()
            )
            request = None
            request_repr = "Request repr() unavailable."

        if record.exc_info:
            exc_info = record.exc_info
            stack_trace = '\n'.join(traceback.format_exception(*record.exc_info))
        else:
            exc_info = (None, record.getMessage(), None)
            stack_trace = 'No stack trace available'

        message = "%s\n\n%s" % (stack_trace, request_repr)
        reporter = ExceptionReporter(request, is_email=True, *exc_info)
        html_message = self.include_html and reporter.get_traceback_html() or None
        mail.mail_admins(subject, message, fail_silently=True, html_message=html_message)

仅供参考：我的先前回答。

创建一个自定义中间件：可以从CommonMiddleware中获取灵感，该中间件位于https://code.djangoproject.com/browser/django/trunk/django/middleware/common.py（查看process_response）
基于https://code.djangoproject.com/browser/django/trunk/django/core/mail/message.py创建一个名为send_mail_with_exception_header的函数

这是一个示例：

# Custom middleware

class MyErrorMiddleware(object):
    def process_response(self, request, response):
        if response.status_code == 404:
            domain = request.get_host()
            referer = request.META.get('HTTP_REFERER', None)
            is_internal = _is_internal_request(domain, referer)
            path = request.get_full_path()
                if referer and not _is_ignorable_404(path) and (is_internal or '?' not in referer):
                    ua = request.META.get('HTTP_USER_AGENT', '<none>')
                    ip = request.META.get('REMOTE_ADDR', '<none>')
                    mail_error("Broken %slink on %s" % ((is_internal and 'INTERNAL ' or ''), domain),
                        "Referrer: %s\nRequested URL: %s\nUser agent: %s\nIP address: %s\n" \
                                  % (referer, request.get_full_path(), ua, ip),
                                  fail_silently=True)
                return response

# Custom mail_error function

def mail_error(subject, message, fail_silently=False, connection=None,
                  html_message=None):
    """Sends a message to the managers, as defined by the MANAGERS setting."""
    if not settings.MANAGERS:
        return

    # put your extra headers here
    mail = EmailMultiAlternatives(u'%s%s' % (settings.EMAIL_SUBJECT_PREFIX, subject),
                message, settings.SERVER_EMAIL, [a[1] for a in settings.MANAGERS],
                connection=connection, header={})
    mail
    if html_message:
        mail.attach_alternative(html_message, 'text/html')
    mail.send(fail_silently=fail_silently)