12

我需要models.FileField使用 Django 作为电子邮件附件发送。我已经看到了显示如何使用原始request.FILES数据（仍包含 Content-Type）执行此操作的片段，但是一旦您已经将文件保存在models.FileField. 内容类型似乎无法从models.FileField.

有人可以给我一个例子来说明这将如何工作吗？我开始认为保存文件时可能必须将 Content-Type 存储在模型中。

谢谢！

4

4 回答 4

18

在 Django 中，将 models.FileField 文件附加到电子邮件消息中既简单又好用：

from django.core.mail import EmailMultiAlternatives
kwargs = dict(
    to=to,
    from_email=from_addr,
    subject=subject,
    body=text_content,
    alternatives=((html_content, 'text/html'),)
)
message = EmailMultiAlternatives(**kwargs)
message.attach_file(model_instance.filefield.path)
message.send()
于 2011-11-21T22:23:47.080 回答
6

另一种方法：

from django.core.mail.message import EmailMessage

msg = EmailMessage(subject=my_subject, body=my_email_body, 
      from_email=settings.DEFAULT_FROM_EMAIL, to=[to_addressed])
msg.attach_file(self.my_filefield.path) # self.my_filefield.file for Django < 1.7
msg.send(fail_silently=not(settings.DEBUG))
于 2012-06-13T16:33:37.823 回答
6

我正在使用django-.path storages等等

NotImplementedError: This backend doesn't support absolute paths.

为了避免这种情况，我只需打开文件，阅读它，猜测 mimetype 并稍后关闭它，但必须使用.attach而不是.attach_file魔法。

from mimetypes import guess_type
from os.path import basename


f = model.filefield
f.open()
# msg.attach(filename, content, mimetype)
msg.attach(basename(f.name), f.read(), guess_type(f.name)[0])
f.close()
于 2019-01-30T07:42:29.740 回答
0

I would just not supply a content type and let the recipient's email client work it out. Unless it will be something unusual it shouldn't be a problem.

RFC2616 states:

If and only if the media type is not given by a Content-Type field, the recipient MAY attempt to guess the media type via inspection of its content and/or the name extension(s) of the URI used to identify the resource.

but... If you want to specify it then storing the content type on upload is a very good idea. It should be noted that django's own docs say to verify the data from users

If you are on a *unix OS you could try to guess/inspect it:

import subprocess
subprocess.check_output(['file', '-b', '--mime', filename])

(from How to find the mime type of a file in python? )

于 2011-06-28T04:10:02.347 回答