Django: Saving an image file from a form

I want to save the image which as been uploaded via the PaletteGenForm as such:

#Form 
class PaletteGenForm(forms.Form):
    im = forms.ImageField(required=True)

#View
def palette_gen_view(request):
    PATH_OF_IMAGE_TO_BE_PALETTED= MEDIA_ROOT+ "/tobesaved.png"
    if request.method == 'POST':
        form = PaletteGenForm(request.POST, request.FILES)
        if form.is_valid():
            im = Image.open(StringIO(request.FILES['im']['content']))
            im.save(PATH_OF_IMAGE_TO_BE_PALETTED, "PNG")
            #call some functions to generate pallete
            return #returns the palette of the image.
    else:
        form = PaletteGenForm()
    return ren开发者_如何转开发der_to_response('palette_generate.html', {'form': form,})

However here is my error when calling this URL:

'InMemoryUploadedFile' object is unsubscriptable

Try this:

im = Image.open(StringIO(request.FILES['im'].read()))

Not sure you need to wrap it in a StringIO at all. Try

im = Image.open(request.FILES['im']['content'])

try reading the data from form cleaned_data

im = Image.open(StringIO(form.cleaned_data['im'].read()))

for me this worked (didn't tried reading from the request)