This code should work with Django 1.0 :
from django.db import models
from PIL import Image
class Photo(models.Model):
related_entry_id = models.ForeignKey(MyBlogEntryModel) # Use your
model object
photo = models.ImageField(upload_to="my_upload_path/") # Point to
your upload directory (No leading slash will point to a subfolder of
your media root)
def __str__(self):
return "%s" % (self.photo.name)
def _save_FIELD_file(self, field, filename, raw_contents,
save=True):
filename = "%s_%s" % (self.related_entry_id, filename)
super(Photo, self)._save_FIELD_file(field, filename,
raw_contents, save)
def save(self, size=(800, 800)):
if not self.id and not self.photo:
return
super(Photo, self).save()
filename = self.photo.path
image = Image.open(filename)
image.thumbnail(size, Image.ANTIALIAS)
image.save(filename)
On Oct 3, 5:43 pm, "Juanjo Conti" <[EMAIL PROTECTED]> wrote:
> Matt, I'd like to resize an uploaded image, while uploading i think...
> before it gets saved to the hard disk. How did you do it? In pre 1.0
> version I redefined _save_FIELD_file from my class.
>
> Thanks,
>
> 2008/8/14 mcordes <[EMAIL PROTECTED]>:
>
>
>
>
>
> > Thanks Andy,
>
> > Using the callable for upload_to is pretty interesting, but I don't
> > think it's usable for my purposes because I want the image file's name
> > to be XXX.png where XXX is the primary key for the model which, as the
> > documentation warns, may not be set when the upload_to callable gets
> > called.
>
> > I was previously doing this in the model's save method, but as I
> > mentioned after the filestorage change it's not clear how to modify
> > the path of an existing ImageFieldFile
>
> > As for my image processing it's pretty simple and consists of:
>
> > 1. resize image
> > 2. changing format to png
> > 3. applying relatively simple transformations on the image
> > 4. then saving it in a different directory with a name based on the
> > model's id, something like /path/i/want/<MyModel.id>.png
>
> > -Matt
>
> > On Aug 14, 12:18 am, "Andy Lei" <[EMAIL PROTECTED]> wrote:
> >> If the only post processing you need to do is changing the filename, you
> >> should pass a callable (like a function) as the upload_to parameter.
> >> for example:
>
> >> def get_upload_path(instance, filename):
> >> return '/path/you/want/' + instance.name
>
> >> class MyModel(models.Model):
>
> >> image = models.ImageField(upload_to=get_upload_path)
>
> >> Check out the documentation here:
>
> >>http://www.djangoproject.com/documentation/model-api/#filefield
>
> >> If you need to do other post processing, I think you want to take advantage
> >> of the pre / post save signals, or override save method on your model.
> >> Just
> >> do the post processing in place though; i can't see a reason why you'd need
> >> to save it twice.
>
> >> -Andy
>
> >> On Wed, Aug 13, 2008 at 10:22 PM, mcordes <[EMAIL PROTECTED]> wrote:
>
> >> > Hello,
>
> >> > When uploading files, I'd like to upload them to a temporary location
> >> > and then after post processing move them to a different directory/
> >> > file. I had this working with the pre-filestorage code, but I'm not
> >> > sure what the correct procedure should now be.
>
> >> > My model looks like this:
>
> >> > > class MyModel(models.Model):
> >> > > image = models.ImageField(upload_to="images/tmp")
>
> >> > An uploaded file would then get stored here (relative to my media
> >> > root):
>
> >> > > images/tmp/somefile.png
>
> >> > I'd like to be able to modify the associated MyModel instance so its
> >> > image field now has a name of
>
> >> > > images/processed/XXX.png
>
> >> > I've tried using FieldFile.save as in
>
> >> > > myModelInstance.image.save('new/path/new.png', File(file('path to
> >> > processed image file')))
>
> >> > and this mostly seems to work, but it throws out the 'new/path' part
> >> > of the name argument and my image ultimately gets stored here:
>
> >> > > images/tmp/new.png
>
> >> > rather than where I want it: 'images/processed/new.png'.
>
> >> > What am I missing? Am I attacking this all wrong? What are your
> >> > suggestions?
>
> >> > -Matt
>
> --
> Juanjo Conti
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