RAILS S3显示存储在亚马逊S3的pdf文件

Question

如何显示存储在S3亚马逊在rails应用程序中的pdf文件？

Answer 1

上传文件到S3时文件名必须有没有空格或特殊字符。
要与空间使用以下

yourmodel.rb

class Video < ActiveRecord::Base 
    has_attached_file :video, 
    :path => ":rails_root/public/system/:attachment/:id/:style/:normalized_video_file_name", 
    :url => "/system/:attachment/:id/:style/:normalized_video_file_name" 

    Paperclip.interpolates :normalized_video_file_name do |attachment, style| 
    attachment.instance.normalized_video_file_name 
    end 

    def normalized_video_file_name 
    "#{self.id}-#{self.video_file_name.gsub(/[^a-zA-Z0-9_\.]/, '_')}" 
    end 
end 

什么是我们在这里做上传文件？很简单，在has_attached_file中，我们编辑paperclip默认返回路径和url的方式，这是保存和加载文件以显示它时最相关的组件。回形针默认值是：前面有

path default => ":rails_root/public/system/:attachment/:id/:style/:filename" 
url default => "/system/:attachment/:id/:style/:filename" 

价值观 '：' 是标准的插值回形针有
http://blog.wyeworks.com/2009/7/13/paperclip-file-rename

Answer 2

你需要一个补充：s3_headers进入您的has_attachment行：

has_attached_file :asset, 
:storage => :s3, 
:s3_credentials => "#{RAILS_ROOT}/config/s3.yml", 
:path => "uploads/:id/:basename.:extension", 
:s3_headers => {"Content-Disposition" => "attachment"}, 
:s3_permissions => 'authenticated-read', 
:s3_protocol => "http", 
:bucket => "my_bucket_or_something"