因此,我正在努力实现my previous question的答案。
这是我的模型:
class Talk(models.Model):
title = models.CharField(max_length=200)
mp3 = models.FileField(upload_to = u'talks/', max_length=200)
这是我的表格:
class TalkForm(forms.ModelForm):
def clean(self):
super(TalkForm, self).clean()
cleaned_data = self.cleaned_data
if u'mp3' in self.files:
from mutagen.mp3 import MP3
if hasattr(self.files['mp3'], 'temporary_file_path'):
audio = MP3(self.files['mp3'].temporary_file_path())
else:
# What goes here?
audio = None # setting to None for now
...
return cleaned_data
class Meta:
model = Talk
Mutagen需要磁盘上类似文件的对象或文件名(我认为)-第一种情况(上传的文件大于内存中处理的文件的大小)可以正常工作,但我不知道如何处理否则我会得到。我试过了:
# TypeError (coercing to Unicode: need string or buffer, InMemoryUploadedFile found)
audio = MP3(self.files['mp3'])
# TypeError (coercing to Unicode: need string or buffer, cStringIO.StringO found)
audio = MP3(self.files['mp3'].file)
# Hangs seemingly indefinitely on my test file (~800KB)
audio = MP3(self.files['mp3'].file.read())
诱变剂有问题吗,还是我做错了?
回答后
像这样在我的
InMemoryUploadedFile
类中即时修改FILE_UPLOAD_HANDLERS
设置:def add_view(self, request, form_url='', extra_context=None):
request.upload_handlers = [TemporaryFileUploadHandler()]
return super(TalkAdmin, self).add_view(request, form_url, extra_context)
当我点击Submit时,我得到以下错误500:
处理完上传后,您将无法设置上传处理程序。
即使我尽我所能!
另外,我不确定要返回的对象是否具有
ModelAdmin
方法(我在save
和dir(self.files['mp3'].file)
中进行了查看)。 最佳答案
您可以尝试以这种方式更改FILE_UPLOAD_HANDLERS,以便Django始终使用temporay文件处理程序:FILE_UPLOAD_HANDLERS
默认值:
("django.core.files.uploadhandler.MemoryFileUploadHandler",
"django.core.files.uploadhandler.TemporaryFileUploadHandler",)
因此,您可以通过覆盖settings.py中的设置仅保留
TemporaryFileUploadHandler
。编辑:
简单得多,应该首先想到它:(:
from your.models import Talk
mp3 = self.files['mp3']
f = Talk.mp3.save('somename.mp3', mp3)
MP3(f.mp3.path)
>>> {'TRCK': TRCK(encoding=0, text=[u'5'])}
您可以通过这种方式将
InMemoryUploadedFile
保存到磁盘,然后使用该文件的路径来使用mutagen
。编辑:
没有模型实例也是如此。
import os
from django.core.files.storage import default_storage
from django.core.files.base import ContentFile
from django.conf import settings
from mutagen.mp3 import MP3
mp3 = request.FILES['mp3'] # or self.files['mp3'] in your form
path = default_storage.save('tmp/somename.mp3', ContentFile(mp3.read()))
MP3(os.path.join(settings.MEDIA_ROOT, path))
请注意,它会将文件保存在MEDIA_ROOT中,当我尝试将其保存到其他地方时,我得到SuspiciousOperation,因为您可以写入的位置受到限制...您应该在检查完该文件后删除该文件,我想这是真实的在您的模型上...
path = default_storage.delete('tmp/somename.mp3')