Django存储S3-存储现有文件 [英] Django storages S3 - Store existing file

问题描述

我有带有最新django存储的django 1.11，并通过S3后端进行了设置.

I have django 1.11 with latest django-storages, setup with S3 backend.

我正在尝试以AWS图​​像链接为起点，以编程方式实例化ImageFile.在查看源代码/文档时，我不知道如何执行此操作.

I am trying to programatically instantiate an ImageFile, using the AWS image link as a starting point. I cannot figure out how to do this looking at the source / documentation.

我假设我需要创建一个文件，并为其提供从URL派生而没有域的路径，但是我找不到确切的方法.

I assume I need to create a file, and give it the path derived from the url without the domain, but I can't find exactly how.

此方法的最终目的是以编程方式创建w Image对象，该对象指向S3图像(因此将新的ImageFile传递到图像的Imagefield).我拥有图像存储在其中的S3存储桶.

The final aim of this is to programatically create wagtail Image objects, that point to S3 images (So pass the new ImageFile to the Imagefield of the image). I own the S3 bucket the images are stored in it.

上传图像可以正常工作，因此系统设置正确.

Uploading images works correctly, so the system is setup correctly.

更新

为澄清起见，我需要执行与正常过程相反的操作.通常，将物理图像提供给系统，然后系统创建ImageFile，然后将文件上传到S3，并将URL分配给File.url.我有File.url，并且需要一个ImageFile对象.

To clarify, I need to do the reverse of the normal process. Normally a physical image is given to the system, which then creates a ImageFile, the file is then uploaded to S3, and a URL is assigned to the File.url. I have the File.url and need an ImageFile object.

推荐答案

事实证明，在一些需要文件的模型中，使用DjangoStorages时，我要做的就是在文件字段中传递File而不是，传递AWS S3对象密钥(而不是URL，仅传递对象密钥). 调用model.save()时，将对S3进行boto调用，以验证具有提供的键的对象是否存在，并保存该项目.

It turns out, in several models that expect files, when using DjangoStorages, all I had to do is instead of passing a File on the file field, pass the AWS S3 object key (so not a URL, just the object key). When model.save() is called, a boto call is made to S3 to verify an object with the provided key is there, and the item is saved.

这篇关于Django存储S3-存储现有文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！