Rails 4 - 使用带有Paperclip的cloudfront

Question

我有一个应用程序,它已经(在staging和prod中)与S3一起工作.
现在我们希望它与cloudfront一起使用.

我发现由于某种原因,我在两个地方有回形针定义:

/confog/initializers/paperclip.rb:

if Rails.env.production? || Rails.env.staging? || true
  Paperclip::Attachment.default_options[:url] = ':s3_domain_url'
  Paperclip::Attachment.default_options[:path] = '/:class/:attachment/:id_partition/:style/:filename'
end

/config/environments/staging.rb和/config/environments/production.rb

config.paperclip_defaults = {
  :storage => :s3,
  :s3_credentials => {
    :bucket => s3_options[:bucket],
    :access_key_id => s3_options[:access_key_id],
    :secret_access_key => s3_options[:secret_access_key]
  }
}

(我s3_options从我有的s3.yml文件加载)

第一个问题 - 是否有必要(或者另一方面 - 这是错误的)将这两个地方配置？

有了这个配置,我得到了这个:

> Profile.last.image.url
=> "https://mybucket.s3.amazonaws.com/profiles/images/000/000/001/original/someimage.jpg?1439912576"

我的目标: 获取cloundfront url而不是s3.

我尝试了几件事:

1. 添加到paperclip.rb这一行:

   Paperclip::Attachment.default_options[:s3_host_alias]  = "xxxxx.cloudfront.net"
   

   (xxxxx代表cloudfront哈希).
   结果:没有任何改变.

2. 添加到paperclip.rb这一行:

   Paperclip::Attachment.default_options[:s3_host_name]  = "xxxxx.cloudfront.net"
   

   (xxxxx代表cloudfront哈希).
   结果:回形针在其之前连接桶名称:

   > Profile.last.image.url
   => "https://mybucket.xxxxx.cloudfront.net/profiles/images/000/000/001/original/someimage.jpg?1439912576"
   

3. 禁用paperclip.rb中的配置并将这些行添加到环境配置文件中(我在development.rb上尝试过):

   config.paperclip_defaults = {
          :
     :s3_credentials => {
        :
        :
       :url => "xxxxx.cloudfront.net",
       :s3_host_name => "xxxxx.cloudfront.net",
       :path => '/:class/:attachment/:id_partition/:style/:filename',
     }
   }
   

   结果:回形针在其后连接桶名称:

   > Profile.last.image.url
   => "https://xxxxx.cloudfront.net/mybucket/profiles/images/000/000/001/original/someimage.jpg?1439912576"
   

4. 如(3)所示,但将这些行加一级:

   config.paperclip_defaults = {
     :storage => :s3,
     :url => "xxxxx.cloudfront.net",
     :s3_host_name => "xxxxx.cloudfront.net",
     :path => '/:class/:attachment/:id_partition/:style/:filename',
     :s3_credentials => {
        :
        :
     }
   }
   

   结果:与(3)相同.

简而言之,无论我放入什么:s3_host_name,paperclip都会在某些地方连接桶名.

有些想法？

Answer 1

这比我想象的容易.
看起来像回形针使用:url字符串或作为符号的参考,指示如何构造网址.

在我的/config/environments/staging.rb和/config/environments/production.rb文件中,我现在有:

config.paperclip_defaults = {
  :storage => :s3,
  :url => ':s3_alias_url',
  :s3_host_alias => "xxxxx.cloudfront.net",
  :path => '/:class/:attachment/:id_partition/:style/:filename',
  :s3_credentials => {
       :
       :
  }
}