I use a computed field to create and save thumbnails:
Field('image_display', 'upload',
uploadfolder=request.folder+'static/uploads',
compute=lambda r: resize_image(r['image'], (320,320),
'display'),
readable=False, writable=False),
def resize_image(image, size, path, rotate=0):
if image:
try:
img = Image.open('%sstatic/uploads/%s' % (request.folder,
image))
img = img.convert("RGB")
img.thumbnail(size, Image.ANTIALIAS)
img = img.rotate(rotate)
root, ext = os.path.splitext(image)
filename = '%s_%s%s' %(root, path, ext)
img.save('%sstatic/uploads/%s' % (request.folder, filename))
return filename
except Exception, e:
return e
else:
return None
