保存时调整图像大小 [英] resize image on save

问题描述

在 Django 中上传图像后，如何轻松调整图像大小?我使用的是 Django 1.0.2 并且我已经安装了 PIL.

How can I easily resize an image after it has been uploaded in Django? I am using Django 1.0.2 and I've installed PIL.

我正在考虑覆盖模型的 save() 方法来调整它的大小，但我真的不知道如何开始并覆盖它.

I was thinking about overriding the save() method of the Model to resize it, but I don't really know how to start out and override it.

有人能指出我正确的方向吗?谢谢:-)

Can someone point me in the right direction? Thanks :-)

@Guðmundur H:这不起作用，因为 django-stdimage 包在 Windows 上不起作用:-(

@Guðmundur H: This won't work because the django-stdimage package does not work on Windows :-(

推荐答案

您应该使用一种方法来处理上传的文件，如 Django 文档.

You should use a method to handle the uploaded file, as demonstrated in the Django documentation.

在这种方法中，您可以连接变量中的块(而不是直接将它们写入磁盘)，从该变量创建一个 PIL 图像，调整图像大小并将其保存到磁盘.

In this method, you could concatenate the chunks in a variable (rather than writing them to disk directly), create a PIL Image from that variable, resize the image and save it to disk.

在 PIL 中，您应该查看 Image.fromstring 和 Image.resize.

In PIL, you should look at Image.fromstring and Image.resize.

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