python - 如何将 InMemoryUploadedFile 对象复制到磁盘

Question

我正在 try catch 与表单一起发送的文件并在保存之前对其执行一些操作。所以我需要在临时目录中创建这个文件的副本，但我不知道如何访问它。 Shutil 的函数无法复制此文件，因为它没有路径。那么有没有办法以其他方式执行此操作？

我的代码:

    image = form.cleaned_data['image']
    temp = os.path.join(settings.PROJECT_PATH, 'tmp')
    sourceFile = image.name # without .name here it wasn't working either
    import shutil
    shutil.copy(sourceFile, temp)

这引发了:

Exception Type: IOError at /<br/>
Exception Value: (2, 'No such file or directory')

还有调试:

#  (..)\views.py in function

  67. sourceFile = image.name
  68. import shutil
  69. shutil.copy2(sourceFile, temp) ...

# (..)\Python26\lib\shutil.py in copy2

  92. """Copy data and all stat info ("cp -p src dst").
  93.
  94. The destination may be a directory.
  95.
  96. """
  97. if os.path.isdir(dst):
  98. dst = os.path.join(dst, os.path.basename(src))  
  99. copyfile(src, dst) ... 
 100. copystat(src, dst)
 101.

▼ Local vars
Variable    Value
dst     
u'(..)\\tmp\\myfile.JPG'
src     
u'myfile.JPG'
# (..)\Python26\lib\shutil.py in copyfile

  45. """Copy data from src to dst"""
  46. if _samefile(src, dst):
  47. raise Error, "`%s` and `%s` are the same file" % (src, dst)
  48.
  49. fsrc = None
  50. fdst = None
  51. try:
  52. fsrc = open(src, 'rb') ...
  53. fdst = open(dst, 'wb')
  54. copyfileobj(fsrc, fdst)
  55. finally:
  56. if fdst:
  57. fdst.close()
  58. if fsrc:

▼ Local vars
Variable    Value
dst     
u'(..)\\tmp\\myfile.JPG'
fdst    
None
fsrc    
None
src     
u'myfile.JPG'

Answer 1

This是类似的问题，它可能会有所帮助。

import os
from django.core.files.storage import default_storage
from django.core.files.base import ContentFile
from django.conf import settings

data = request.FILES['image'] # or self.files['image'] in your form

path = default_storage.save('tmp/somename.mp3', ContentFile(data.read()))
tmp_file = os.path.join(settings.MEDIA_ROOT, path)