Rails3 -从远程服务器下载文件并将其上传到S3

I'm currently migrating my project from PHP (codeigniter) to Rails3 and it's amazing. But I'm a rails/ruby newbie so I've faced a problem which I don't know how to solve.

我目前正在将我的项目从PHP (codeigniter)迁移到Rails3，这非常棒。但是我是一个rails/ruby新手，所以我遇到了一个我不知道如何解决的问题。

I get new stuff on my site (A) from one certain site (B). It works like this:

我在我的网站(A)从一个特定的网站(B)得到新东西。它是这样工作的:

On site B on a page I want to submit to my site I click a button.
在站点B上，在我想提交给站点的页面上，我点击一个按钮。
Site B makes a POST request to my script on site A with an identifier of that page.
站点B对我在站点a上的脚本发出POST请求，其中包含该页面的标识符。
I take this ID, and make a POST request with CURL back to the site B.
我拿着这个ID，用CURL返回到site B。
Site B returns me a JSON feed with links to files.
站点B返回一个JSON提要，其中包含指向文件的链接。
Then I use CURL to download the files with that ID.
然后我使用CURL来下载具有该ID的文件。

Sorry if the explanation is a bit cluttered.

抱歉，如果解释有点混乱。

For steps 1 and 2 I assume, I have to make a POST route and a method in some controller. But the rest isn't that clear to me.

对于步骤1和步骤2，我假设必须在某个控制器中创建POST路由和方法。但其余的我不是很清楚。

Additionally, in php project I hosted files on the same servers. And now I use heroku, so I need to put those files to S3.

此外，在php项目中，我在相同的服务器上托管文件。现在我使用heroku，所以我需要把这些文件放到S3中。

1 个解决方案

#1

update: On reading the Q again, I see that the remote files must be posted from a remote location into the rails app, not from a user-provided url. Carrierwave can most probably still deal with this, but I have no experience in this particular area.

更新:再次读取Q时，我发现远程文件必须从远程位置发送到rails应用程序，而不是从用户提供的url。Carrierwave很可能还在处理这个问题，但是我在这个领域没有经验。

This is really simple with carrierwave.

这对carrierwave来说非常简单。

Once set up, carrierwave will detect wether something is either a file upload or a path to a remote file and import it.

一旦设置好，carrierwave将检测文件上传或远程文件路径，并将其导入。

<%= form_for @user, :html => {:multipart => true} do |f| %>
  <p>
    <label>My Avatar URL:</label>
    <%= image_tag(@user.avatar_url) if @user.avatar? %>
    <%= f.text_field :remote_avatar_url %>
  </p>
<% end %>

S3 storage is supported natively, trough fog, wich needs no set-up or configuration other then a few lines in your uploader file in carrierwave itself.

S3存储是本地支持的，槽型大雾，不需要设置或配置，然后在您的上传器文件中的一些行在carrierwave本身。

#1