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我正在创建一个 Rails 应用程序,其中用户使用 Paperclip 将文件上传到 S3,然后一个单独的组可以下载上传的文件。我需要文件是私有的,并且一直在尝试使用 :permissions => :private 没有任何运气,但可以在关闭此功能的情况下上传和下载文件。

我一直在关注 github 问题:https ://github.com/thoughtbot/paperclip/wiki/Restricting-Access-to-Objects-Stored-on-Amazon-S3和Rails 3, paperclip + S3 - Howto Store for an Instance和保护访问,但仍然卡住,希望能得到一些帮助。这是我到目前为止所拥有的:

模型/用户.rb

class User < ActiveRecord::Base
  has_many :parts

 ...

  if Rails.env.development?
    has_attached_file :model
  else
    has_attached_file :model,
        :storage => :s3,    
        :path    => "files/:id/:basename.:extension",
        :default_url => '/images/missing_:style.jpg',   
        :bucket => ENV['AWS_BUCKET'],
        :s3_permissions => :private,
        :s3_host_name => 's3-us-west-1.amazonaws.com',
        :s3_credentials => {
            :access_key_id => ENV['AWS_ACCESS_KEY_ID'],
            :secret_access_key => ENV['AWS_SECRET_ACCESS_KEY']
        }
  end  

用户控制器.rb

 def create
    @user = User.new(params[:user])
    @part = Part.new
    if @user.save
      ...
    end
  end

  def download
    @user = User.find(params[:id])
    redirect_to(@user.model.expiring_url(10))
  end

part_controller.rb

class PartsController < ApplicationController
  def index
    @parts = Part.all
    @users = User.all
  end

end

路线.rb

 match 'users/download' => 'users#download', :as => 'download_model'

零件/index.html.erb

<p>
<% @parts.each do |part| %>
    <p><%= part.model_name %></p>
<% end %>

<% @users.each do |user| %>
    <p><%= link_to "Download", download_model_path(user) %></p>
<% end %>

</p>
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