Paperclip aws-sdk错误：未初始化的常量

Question

I'm currently running into the uninitialized constant Paperclip::Storage::S3::AWS error when I attempt to upload files to my server. I understand this to be typically caused by running an older version of paperclip, before they added support for aws-sdk-v2. The strange thing is that I'm running the latest paperclip version (4.3.1) which, according to its github page , includes aws-sdk-v2 support.

Honestly, I'm not sure what more I can say about this. I checked the error log and the above is the only complaint it has. Do I need to do anything special to run v2 with paperclip? Thanks to anyone who can shine any light onto this matter.

Answer 1

the issue is written here:

http://ruby.awsblog.com/post/TxFKSK2QJE6RPZ/Upcoming-Stable-Release-of-AWS-SDK-for-Ruby-Version-2

try to change your Gemfile to:

  gem 'aws-sdk', '< 2.0'

Answer 2

Figured it out with the help of some folks over at github. (See the thread here.)

Basically it seems that paperclip 4.3.1 doesn't entirely support v2 yet. A week after it was released or so, a commit was pushed to the master that gets past this error. It appears not to be perfect but here's how I made it work.

You can specify this particular revision of paperclip to bundler with the following line:

gem 'paperclip', :git=> 'https://github.com/thoughtbot/paperclip', :ref => '523bd46c768226893f23889079a7aa9c73b57d68'

More information on this sort of thing can be found here.

You will need to specify the REGION of your in your paperclip defaults. This can be done by dropping a :s3_region=> 'us-west-2' (or whatever your region is) into your paperclip_defaults . Simply specifying the endpoint or host will not be enough. You can look yours up here.

Also slightly confusing is the error message if the above isn't done properly:

missing region; use :region option or export region name to ENV['AWS_REGION']

1. I couldn't get the recommended environment variable to work.
2. The :region option is somewhat misleading as it needs to be written :s3_region