设置回形针使用S3在我的本地开发的系统是一个单元。不过，我无法得到它的工作在Heroku上。

Setting up paperclip to use S3 on my local dev system was a snap. However, I am not able to get it to work on Heroku.

成功的文件上传：

[paperclip] Saving attachments.
[paperclip] saving photos/2/small.jpg
[paperclip] saving photos/2/original.jpg

然而，视图，尝试链接到上传得到一个路由错误：

However, views that try to link to the upload get a routing error:

ActionController::RoutingError (No route matches "/photos/small/missing.png" with {:method=>:get}):

注意它是如何使用的文件名丢失，并使用png格式因为即使该文件是一个名为.jpg扩展名。

Notice how it is using 'missing' for the file name and is using '.png' for the extension even though the file is a '.jpg'.

我已经试过了无数的组合：网​​址和：路径与选项 has_​​attached_file 根据不同的博客文章和教程，我发现（包括Heroku的文档），但没有一个似乎工作。

I have tried numerous combinations of the :url and :path options with has_attached_file according the various blog posts and tutorials I have found (including Heroku's docs), but none seem to work.

什么是使用回形针与S3在Heroku上的正确步骤是什么？

What are the correct steps to use paperclip with S3 on Heroku?

推荐答案

发现问题：需要对数据库进行更新

Found the problem: needed to update the database.

heroku rake:db:migrate
heroku restart

我已经做了我认为将完成同样的事情早已： Heroku的耙分贝：模式：负载，但也许不工作或东西出了问题过程

I had done what I thought would have accomplished the same thing already: heroku rake db:schema:load, but perhaps that doesn't work or something went wrong in the process.

总之，这样做，以及移除调用attr_accessor的建议在另一个博客，解决了这个问题。

Anyhow, doing that, along with removing the calls to attr_accessor as suggested on another blog, solved the problem.