I'd like to use an upload handler function but confused as to how an
uploaded file gets saved to a model's FileField. Eventually I will use a
formset to allow for multiple files to be uploaded.
#models.py
class MyModel(models.Model):
file = models.FileField(upload_to='attachments', blank=True)
comment = models.ForeignKey('Comment', blank=true, null=True)
class Comment(models.Model):
#forms.py
class MyModelForm(forms.ModelForm):
class Meta:
model = MyModel
#views.py
def handle_uploads(key, folder=""):
saved = {'original_title':key.name}
upload_full_path = os.path.join(settings.MEDIA_ROOT, folder)
if not os.path.exists(upload_full_path):
os.makedirs(upload_full_path)
counter = 1
while os.path.exists(os.path.join(upload_full_path, key.name)):
name, ext = os.path.split(key.name)
key.name = '%s_%s.%s' % (name, counter, ext)
counter += 1
with open(os.path.join(upload_full_path, key.name), 'wb+') as
destination:
for chunk in key.chunks():
destination.write(chunk)
destination.close()
saved['file'] = destination
return saved
def add_comment(request, template_name='comments/comment_form.html'):
"""
I have two ModelForm's in my form.
"""
if request.POST:
comment_form = ScopingCommentForm(request.POST,
prefix='comment_form')
attachment_form = MyModelForm(request.POST, request.FILES)
if comment_form.is_valid() and attachment_form.is_valid():
comment = comment_form.save()
if request.FILES.get('attachment'):
f = handle_uploads(request.FILES.get('attachment'),
settings.ATTACHMENTS)
#this is where I feel like I am missing something 'obvious'
try:
logger.info("attachment path: %s"% f['original_title'])
file = MyModel.objects.create(attachment=f['file'],
comment=comment,
original_title=f['original_title'],
uploaded_on=datetime.datetime.now())
messages.add_message(request, messages.SUCCESS, """Your
file has been successfully uploaded. The file %s has been renamed to %s"""%
(orig_title, file.attachment.filename))
except DatabaseError, e:
messages.error(request, "There was an error in
uploading your file. Please rename and upload again. %s"% e)
return render(request, template_name)
else:
comment_form = ScopingCommentForm(prefix='comment_form')
attachment_form = ScopingAttachmentForm()
return render(request, template_name, {'comment_form': comment_form,
'attachment_form':attachment_form})
#template
<form action="." method="POST" id="comment-form"
enctype="multipart/form-data">
{% csrf_token %}
{{ comment_form.errors }}
{{ comment_form.non_field_errors }}
<fieldset class="one form-fieldset">
{{ comment_form.as_ul }}
<div class="well">
{{ attachment_form.as_table }}
</div>
</fieldset>
...
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