Django在发送给客户端之前调整图像大小

Question

I have the following view on my django server :

@csrf_exempt
def get_post_image(request, postID):
    response_date = {}
    if not request.user.is_authenticated():
        response_date['code'] = 507
        response_date['msg'] = "not logged in"
    else:
        post = Post.objects.get(id=postID)
        image_data = open(settings.MEDIA_ROOT + post.pic.name, "rb").read()
        return HttpResponse(image_data,
                            content_type=mimetypes.guess_type(post.pic.name))

which takes an postID and return its image. but I want to resize this image (without changing ratio) before send it to client.

How is it possible?

Answer 1

for the raw tool for manipulating images from python see:
https://pillow.readthedocs.org/

...for a Django-integrated image resizing system see:
http://easy-thumbnails.readthedocs.org/en/latest/
or
http://sorl-thumbnail.readthedocs.org/en/latest/ (note the requirements though)

Answer 2

简易缩略图提供了生成缩略图的简便方法 。