How to resolve "key not found: :ciphers"?

Question

I'm very rusty with rails and I think a lot has changed in the 7-ish years since I've worked with it.

I'm trying to set up this sample app: https://iridakos.com/news/2015/06/21/rails-sample-api-ui

The problem I'm facing is that the UI doesn't interact with the API correctly. I get the error in the screenshot below.

The lofocats UI app gives me the following stack trace:

KeyError (key not found: :ciphers):
  lib/api/resource.rb:39:in `execute'
  app/models/cat_entry.rb:46:in `all'
  app/controllers/cat_entries_controller.rb:9:in `index'
  app/controllers/application_controller.rb:44:in `set_api_authentication_token'

line 44 in application_controler.rb is the first line of the begin block (Api::Configuration.current_authentication_token = session[:user_information][:authentication_token] if is_user_signed_in?):

def set_api_authentication_token
  begin
    Api::Configuration.current_authentication_token = session[:user_information][:authentication_token] if is_user_signed_in?
    yield
  ensure
    # Always nullify the token after each action.
    Api::Configuration.current_authentication_token = nil
  end
end

I'm not sure how to get around this error. I've not seen it before and searching SO gives some Cloudinary specific answers.

Answer 1

Upgrade your rest-client gem to >= 2.0.1.

This issue had to do with a newer version of OpenSSL and it was fixed in rest-client gem version 2.0.1, as per this Issue comment:

https://github.com/rest-client/rest-client/issues/612#issuecomment-313034465

So just make sure you are using 2.0.1 or greater of rest-client and you should be all good. We statically set ours to 2.1.0, which was the latest stable release at the time of writing, and everything is running smoothly.

Answer 2

Just answering 9 years later as this was one of the only threads I found on this issue. In my case, using Unirest and RestClient both gave me the error in the title, despite my calls working from the command line with Curl. I switched to the HTTParty gem, and no more errors.

Inferring from a discussion on RestClient's Github, this may be because RestClient and Unirest "check for weak default TLS ciphers", due to older versions of Ruby not having a "sane cipher list".

https://github.com/rest-client/rest-client/pull/573

Answer 3

How do you interact with API? Are you using some gem? I've got similar message error when i was using outdated rest-client gem. Updating from 1.X to 2.X solved issue.

NoMethodError (undefined method `response' for #<KeyError: key not found: :ciphers>)

Maybe some gem using outdated rest-client gem? This was my issue(if i recall correctly), i forked repo and updated dependency