S3 putObject“expires”如何工作？(How S3 putObject “expires” works?)

 该文档似乎表明这种确切的行为是通过设计的： 
 
 
 
 ：shallow - 如果为true，则引用特定成员（即带有：id参数的成员）的嵌套资源的路径不会使用父路径前缀或名称前缀。 
 
 
 （来自http://api.rubyonrails.org/classes/ActionController/Resources.html#M000501 ） 
 
 由于使用：shallow选项会导致您的：path_prefix在某些情况下被忽略，如果您必须始终使用此前缀，则应考虑删除：shallow选项。 这是一个替代解决方案，似乎可以满足您的需求： 
 
map.with_options :path_prefix => "blog" do |blog|
  blog.resources :posts do |posts|
    posts.resources :comments, :only => [:index, :create, :new]
  end
  blog.resources :comments, :except => [:index, :create, :new]
end
 
 导致这些路线： 
 
#             posts GET    /blog/posts                               {:controller=>"posts", :action=>"index"}
#                   POST   /blog/posts                               {:controller=>"posts", :action=>"create"}
#          new_post GET    /blog/posts/new                           {:controller=>"posts", :action=>"new"}
#         edit_post GET    /blog/posts/:id/edit                      {:controller=>"posts", :action=>"edit"}
#              post GET    /blog/posts/:id                           {:controller=>"posts", :action=>"show"}
#                   PUT    /blog/posts/:id                           {:controller=>"posts", :action=>"update"}
#                   DELETE /blog/posts/:id                           {:controller=>"posts", :action=>"destroy"}
#     post_comments GET    /blog/posts/:post_id/comments             {:controller=>"comments", :action=>"index"}
#                   POST   /blog/posts/:post_id/comments             {:controller=>"comments", :action=>"create"}
#  new_post_comment GET    /blog/posts/:post_id/comments/new         {:controller=>"comments", :action=>"new"}
#      edit_comment GET    /blog/comments/:id/edit                   {:controller=>"comments", :action=>"edit"}
#           comment GET    /blog/comments/:id                        {:controller=>"comments", :action=>"show"}
#                   PUT    /blog/comments/:id                        {:controller=>"comments", :action=>"update"}
#                   DELETE /blog/comments/:id                        {:controller=>"comments", :action=>"destroy"}
 
 希望这可以帮助！ 

the documentation seems to indicate this exact behavior is by design:
 
 
 
:shallow - If true, paths for nested resources which reference a specific member (ie. those with an :id parameter) will not use the parent path prefix or name prefix.
 
 
(from http://api.rubyonrails.org/classes/ActionController/Resources.html#M000501)
 
Since using the :shallow option will cause your :path_prefix to be ignored in some cases, if you must always have this prefix you should consider removing the :shallow option. Here's an alternate solution that appears to do what you need:
 
map.with_options :path_prefix => "blog" do |blog|
  blog.resources :posts do |posts|
    posts.resources :comments, :only => [:index, :create, :new]
  end
  blog.resources :comments, :except => [:index, :create, :new]
end
 
Resulting in these routes:
 
#             posts GET    /blog/posts                               {:controller=>"posts", :action=>"index"}
#                   POST   /blog/posts                               {:controller=>"posts", :action=>"create"}
#          new_post GET    /blog/posts/new                           {:controller=>"posts", :action=>"new"}
#         edit_post GET    /blog/posts/:id/edit                      {:controller=>"posts", :action=>"edit"}
#              post GET    /blog/posts/:id                           {:controller=>"posts", :action=>"show"}
#                   PUT    /blog/posts/:id                           {:controller=>"posts", :action=>"update"}
#                   DELETE /blog/posts/:id                           {:controller=>"posts", :action=>"destroy"}
#     post_comments GET    /blog/posts/:post_id/comments             {:controller=>"comments", :action=>"index"}
#                   POST   /blog/posts/:post_id/comments             {:controller=>"comments", :action=>"create"}
#  new_post_comment GET    /blog/posts/:post_id/comments/new         {:controller=>"comments", :action=>"new"}
#      edit_comment GET    /blog/comments/:id/edit                   {:controller=>"comments", :action=>"edit"}
#           comment GET    /blog/comments/:id                        {:controller=>"comments", :action=>"show"}
#                   PUT    /blog/comments/:id                        {:controller=>"comments", :action=>"update"}
#                   DELETE /blog/comments/:id                        {:controller=>"comments", :action=>"destroy"}
 
Hope this helps!