Uploading multiple files in Django without using django.forms

Question

So I've created a form that includes the following item

<input type="file" name="form_file" multiple/>

This tells the browser to allow the user to select multiple files while browsing. The problem I am having is is that when reading / writing the files that are being uploaded, I can only see the last of the files, not all of them. I was pretty sure I've seen this done before, but had no luck searching. Here's generally what my read looks like

if request.FILES:
    filename = parent_id + str(random.randrange(0,100))
    output_file = open(settings.PROJECT_PATH + "static/img/inventory/" + filename + ".jpg", "w")
    output_file.write(request.FILES["form_file"].read())
    output_file.close()

Now, as you can see I'm not looping through each file, because I've tried a few different ways and can't seem to find the other files (in objects and such)

I added in this print(request.FILES["form_file"]) and was only getting the last filename, as expected. Is there some trick to get to the other files? Am I stuck with a single file upload? Thanks!

ars · Accepted Answer · 2010-10-09 17:58:13Z

6

Based on your file element form_file, the value in request.FILES['form_file'] should be a list of files. So you can do something like:

for upfile in request.FILES.getlist('form_file'):
    filename = upfile.name
    # instead of "filename" specify the full path and filename of your choice here
    fd = open(filename, 'w')
    fd.write(upfile['content'])
    fd.close()

Using chunks:

for upfile in request.FILES.getlist('form_file'):
    filename = upfile.name
    fd = open(filename, 'w+')  # or 'wb+' for binary file
    for chunk in upfile.chunks():
        fd.write(chunk)
    fd.close()

edited Oct 9, 2010 at 17:58

answered Oct 4, 2010 at 4:54

ars

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14 Comments

Shane Reustle Over a year ago

I tried that, but only got bits of the file, or "chunks" I think they call them in django. It was pretty weird, I had to switch to this method to actually get the entire file. The chunks were 4kb.

ars Over a year ago

Maybe you can try the recipe for handling chunks mentioned in the docs : docs.djangoproject.com/en/dev/topics/http/file-uploads/…

Shane Reustle Over a year ago

When dealing with chunks, how do I know when I'm finished my first file, and starting my second?

Shane Reustle Over a year ago

I've tried that, but upfile is a string no matter what (when I upload a single file, or multiple files) which is why I can't do chunks() on it.

Shane Reustle Over a year ago

When I print request.FILES when uploading 1 file: <MultiValueDict: {u'form_file': [<InMemoryUploadedFile: n556057924_592062_5411.jpg (image/jpeg)>]}> and when uploading 2 files

<MultiValueDict: {u'form_file': [<InMemoryUploadedFile: n556057924_839946_4670.jpg (image/jpeg)>, <InMemoryUploadedFile: n556057924_839947_4940.jpg (image/jpeg)>]}>

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