def save_uploaded_image(image_data, name_prefix, thumb_size=None):
try:
image = Image.open(image_data)
image.verify()
except IOError:
raise ValidationError('Invalid image')
try:
hash = hashlib.md5(image_data.read()).hexdigest()
name = "%s-%s.%s" % (name_prefix, hash, image.format.lower())
image_file = File(image_data)
image_file.name = name
thumb_file = None
if thumb_size is not None:
# http://www.pythonware.com/library/pil/handbook/image.htm
# ...if you need to load the image after using this method,
# you must reopen the image file.
image_data.seek(0)
image = Image.open(image_data)
image.thumbnail(thumb_size, Image.ANTIALIAS)
temp = StringIO()
image.save(temp, format=image.format)
temp.seek(0)
thumb_file = SimpleUploadedFile(
'thumb-' + name, temp.read(),
'image/%s' % image.format.lower())
# Reset image position
image_data.seek(0)
return image_file, thumb_file
except:
raise ValidationError('Could not upload image')
def save_uploaded_image(image_data, name_prefix, thumb_size=None):
image_data.seek(0, os.SEEK_END)
file_size = image_data.tell()
if file_size > settings.MAXIMUM_IMAGE_SIZE:
raise ValidationError(trans('The uploaded image is too large'))
image_data.seek(0)
try:
image = Image.open(image_data)
image.verify()
except IOError:
raise ValidationError(trans('Invalid image'))
try:
hash = hashlib.md5(image_data.read()).hexdigest()
name = "%s-%s.%s" % (name_prefix, hash, image.format.lower())
image_file = File(image_data)
image_file.name = name
thumb_file = None
if thumb_size is not None:
# http://effbot.org/imagingbook/image.htm
# ...if you need to load the image after using this method,
# you must reopen the image file.
image_data.seek(0)
image = Image.open(image_data)
image.thumbnail(thumb_size, Image.ANTIALIAS)
temp = StringIO()
image.save(temp, format=image.format)
temp.seek(0)
thumb_file = SimpleUploadedFile(
'thumb-' + name, temp.read(),
'image/%s' % image.format.lower())
# Reset image position
image_data.seek(0)
return image_file, thumb_file
except:
raise ValidationError(trans('Image upload issue'))
