Form from Model with File Upload

Question

I'm trying to mimic the admin interface for the Photologue app on the front end. To achieve this, I have thus far created a bit of code in the view:

def galleryuploader(request):
    GalleryFormSet = modelformset_factory(GalleryUpload)    
    if request.method == 'POST':
        formset = GalleryFormSet(request.POST, request.FILES)
        if formset.is_valid():
            formset.save()
            # do something. ... do what?
    else:
        formset = GalleryFormSet()
    return render_to_response("cms_helper/gallery_upload.html", {
        "formset": formset,
    })

and a template:

<form method="post" action="">
    {{ formset }} 
    <input type="submit" />
</form>

I'm using django's "form from models" method for generating this front-end form.

The problem: when I try to upload a file (because I am uploading photos to a photo gallery), and hit submit, it returns with a form error telling me that a required field was missing (the file).

I think I am not checking the request for any files, but even if I were to, I'm not quite sure how to. Here's some documentation about file uploads, but I haven't been able to decipher it yet.

If you have any suggestions about how to make this upload form work, I'd be veryyy happy to hear them. Thanks in advance!

Answer 1

Add the enctype="multipart/form-data" attribute to your form tag. Also you'll need to actually do something with the uploaded files. Here's the example from the django docs:

from django.http import HttpResponseRedirect
from django.shortcuts import render_to_response

# Imaginary function to handle an uploaded file.
from somewhere import handle_uploaded_file

def upload_file(request):
    if request.method == 'POST':
        form = UploadFileForm(request.POST, request.FILES)
        if form.is_valid():
            # you'll need to loop through the uploaded files here.
            handle_uploaded_file(request.FILES['file'])
            return HttpResponseRedirect('/success/url/')
    else:
        form = UploadFileForm()
    return render_to_response('upload.html', {'form': form})

def handle_uploaded_file(f):
    destination = open('some/file/name.txt', 'wb+')
    for chunk in f.chunks():
        destination.write(chunk)
    destination.close()

(See the comment about halfway through)