def save(self, *a, **kw):
"""Attach a non-monotonic permalink to each photo,
post-save."""
super(Photo, self).save(*a, **kw)
h = prf()
h.update(str(self.id))
h.update(str(self.photo.name))
self.permalink = h.hexdigest()[0:8]
super(Photo, self).save()
def save(self, *a, **kw):
"""Attach a non-monotonic permalink to each photo,
post-save."""
super(Photo, self).save(*a, **kw)
h = prf()
h.update(str(self.id))
h.update(str(self.photo.name))
self.permalink = h.hexdigest()[0:8]
super(Photo, self).save()
def save_with(self, filelike):
"""Saves the model instance with a filelike object
representing photograph."""
checksum = prf()
while True:
blob = filelike.read(1024)
if not blob:
break
checksum.update(blob)
filelike.seek(0)
thumb = Image.open(filelike)
width, height = thumb.size
if width > height:
size = 128, height / (width / 128)
else:
size = width / (height / 128), 128
thumb.thumbnail(size, Image.ANTIALIAS)
# Create a file-like object to write thumb data (thumb data previously
# created using PIL, and stored in variable 'thumb')
thumb_io = StringIO()
thumb.save(thumb_io, format='JPEG')
# Create a new Django file-like object to be used in models as
# ImageField using InMemoryUploadedFile. If you look at the source in
# Django, a SimpleUploadedFile is essentially instantiated similarly
# to what is shown here
thumb_file = InMemoryUploadedFile(thumb_io, None, 'foo.jpg',
'image/jpeg', thumb_io.len, None)
self.thumbnail.save(checksum.hexdigest() + '_t.jpg',
File(thumb_file),
save=False)
self.photo.save(checksum.hexdigest() + '.jpg',
File(filelike),
save=True)
def save_with(self, filelike):
"""Saves the model instance with a filelike object
representing photograph."""
checksum = prf()
while True:
blob = filelike.read(1024)
if not blob:
break
checksum.update(blob)
filelike.seek(0)
thumb = Image.open(filelike)
width, height = thumb.size
if width > height:
size = 128, height/(width/128)
else:
size = width/(height/128), 128
thumb.thumbnail(size, Image.ANTIALIAS)
# Create a file-like object to write thumb data (thumb data previously
# created using PIL, and stored in variable 'thumb')
thumb_io = StringIO()
thumb.save(thumb_io, format='JPEG')
# Create a new Django file-like object to be used in models as
# ImageField using InMemoryUploadedFile. If you look at the source in
# Django, a SimpleUploadedFile is essentially instantiated similarly
# to what is shown here
thumb_file = InMemoryUploadedFile(thumb_io, None, 'foo.jpg',
'image/jpeg', thumb_io.len, None)
self.thumbnail.save(checksum.hexdigest() + '_t.jpg', File(thumb_file),
save=False)
self.photo.save(checksum.hexdigest() + '.jpg', File(filelike),
save=True)
