PUT/POST binary files

[suckerpunch]

Hi guys - good work :)

I'm building an Adobe Lightroom plugin for my website to directly
export images into the DB via the REST API.

It looks like Lightroom doesn't do PUT, but it does do POST. So I want
to send over the file, extract the caption and title from the EXIF for
the Django model, save those to the DB and save the file onto the
filesystem.

Now, should I treat this as a resource not mapped to a model, pre-
process and then create a new model, or is there a more efficient
method?

This is in my urls.py

picture_resource = Collection(
queryset = Picture.objects.all(),
permitted_methods = ('GET', 'POST', 'PUT',),
expose_fields = ('id', 'title', 'story'),
receiver = PictureReceiver(),
responder = XMLResponder(),
authentication = HttpBasicAuthentication()
)

This is the first go at a receiver

class PictureReceiver(Receiver):
def __init__(self):
print "PictureReceiver"
def get_data(self, request, method):
print request['story']
print request['fullsize_filename']
def get_post_data(self, request):
return self.get_data(request, 'POST')
def get_put_data(self, request):
return self.get_data(request, 'PUT')

And this is my model

class Picture(models.Model):
title = models.CharField(blank=True, max_length=765)
caption = models.TextField(blank=True)
is_live = models.BooleanField(blank=True)
fullsize_filename = models.ImageField(upload_to='%Y/%m/%d')
created_at = models.DateTimeField(null=True, blank=True)
updated_at = models.DateTimeField(null=True, blank=True)
def __str__(self):
return self.title

Any suggestions? Many thanks :)

[suckerpunch]

Hiya, I'm getting a bit further but repeatedly coming up against 400
bad request messages when I know the packet is well formed. It looks
like the 400 error handling is a little eager in firing.

The traces are working well, but I can't get past these 400 errors.
I'm using cURL to form the requests so that's pretty reliable.

Andreas suggested I email the list.

Cheers :)

[Alex Ezell]

On Mon, Sep 22, 2008 at 3:55 PM, suckerpunch <vish.vi...@gmail.com> wrote:

Hiya, I'm getting a bit further but repeatedly coming up against 400
bad request messages when I know the packet is well formed. It looks
like the 400 error handling is a little eager in firing.

Howdy,

Are you using any authentication on the requests? Is cURL POSTing or GETting to the URL? Do you have the correct methods in your permitted_methods for that URL? 

Maybe a little code snippet might help us pinpoint the issue.

/alex

[suckerpunch]

Hi Alex,

Yes, there is authentication on the request, but that's working fine.
I tried taking out the auth and there was little difference.

Here's a chunk from urls.py

picture_resource = Collection(
queryset = Picture.objects.all(),

permitted_methods = ('GET', 'POST', 'PUT', 'DELETE'),
expose_fields = ('id', 'title', 'caption', 'single', 'story',
'position', 'is_live', 'keep', 'remove', 'fullsize_filename',
'created_at', 'updated_at'),
receiver = PictureReceiver(),
responder = XMLResponder(paginate_by = 2),
authentication = HttpBasicAuthentication()
)

Here's the receiver:

class PictureReceiver(Receiver):
def __init__(self):
print "PictureReceiver"
def get_data(self, request, method):

print request.REQUEST['title']
print request.REQUEST['caption']
print request.REQUEST['position']
print request.REQUEST['single']
print request.REQUEST['story']
print request.REQUEST['is_live']

def get_post_data(self, request):
print "POST Request"
return self.get_data(request, 'POST')

Just printing to the console for debug.

And here's the cURL POST command:

curl -F "title=title1" -F "caption=caption1" -F position=42 -F
"fullsize_filename=@test-post.jpg;image/jpeg" -F "single=on" -F
"story=1" -F "is_live=on" -F "created_at_0=2008-09-20" -F
"created_at_1=00:46:19" -F "updated_at_0=2008-09-20" -F
"updated_at_1=00:46:21" -F "_save=Save" http://localhost:8000/xml/picture/
> error.html