django.utils.images should have a thumbnail function

[espen@…]

i just taught that django.utils.images should have a function that could create a thumbnail.

[Adrian Holovaty]

Can somebody write a patch? Just add a function get_thumbnail (which would return the raw bytes of the thumbnail, right?) in django/utils/images.py.

[Esaj]

It would be nice if thumbnails were created when the image file is initially uploaded. Is there an elegant way to do this? Creating several different sized thumbnails per original image would be useful too.

[hugo <gb@…>]

Feel free to steal the code from ​the image helper in my "stuff" project. There are two functions interesting in this context: cropImage will crop out the largest part of an image that will fit in the bounding box while scaleImage will scale the image so that it will fit into the bounding box while keeping it's aspect ratio. Both functions take the bounding box and a PIL image as input and return a PIL image as output.

[hugo <gb@…>]

Oh yes, sorry: to get the image as a stream of bytes, just do a result.save(..) on a StringIO object. To read your original file just do a PIL.Image.open(..) on your file.

[Adrian Holovaty]

Marking this as a wontfix, cause there are many more other things to do and this is a bit out of the scope of Django.