On Monday 01 June 2009 08:53:26 pm Bobby Roberts wrote: > Does anyone have an example of how to upload an image. I've followed > the docs and it's just not working (ie no file is uploaded and the > filename is not saved to the db. >
I had a similar problem, though it did save the path to the db.
Anyways, this is the solution I came up with for that problem:
# model
class ImageFile(models.Model):
class Meta:
verbose_name = "Gallery Image"
verbose_name_plural = "Gallery Images"
name = models.CharField(max_length=100)
description = models.TextField()
# upload_to can be the method uploadHandler -- this I use as a fallback.
imagefile = models.ImageField(upload_to='galleries/%Y/%m/%d/', blank=True)
## uploadHandler can be anywhere you want, for me it's in admin.py
## as part of my ImageAdmin definition.
def save_model(self, request, obj, form, change):
def uploadHandler(f, saveLocation):
savePath = os.path.join(settings.MEDIA_ROOT, saveLocation, f.name)
destination = open(savePath, 'w')
for chunk in f.chunks():
destination.write(chunk)
destination.close()
return os.path.join(saveLocation, f.name)
### the way the files is handled in the view for form processing
if request.FILES.has_key('imagefile'):
obj.imagefile = uploadHandler(request.FILES['imagefile'],
settings.GALLERY_SAVE_LOCATION)
obj.save()
The overview is that I pass the file's data from request.FILES and a save
location (a directory relative to my media root) to the uploadHandler
function. The uploadHandler function I use is a bit broken in terms of, it
will over write existing files with the same name and it should create the
save directory path if it doesn't exist. I (wrongly; for a more robust
application) rely on the user inputting a unique file name or wants to over
write an existing file and the path already exists. (Which these
assumptions are fine since it is only one person doing the uploads and knows
the restrictions).
After that, I open the save location as a file to write to and then write to
it using the prescribed method in the docs[1]. Returning the path including
the file name, relative to the media root, and assign it to my model's
imagefile field and save the object. The path saved to the model should be
relative to the media root, so urls generated using {{ MEDIA_URL }}{{
obj.imagefile }} work as expected.
If you still have questions just ask.
[1]
http://docs.djangoproject.com/en/dev/topics/http/file-uploads/#handling-uploaded-files
Mike
--
'Tis the dream of each programmer,
Before his life is done,
To write three lines of APL,
And make the damn things run.
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