CKEditor doesn't work only in production env

Question

I'm using the ckeditor ruby gem (v4.2.2) in my Rails app and it works fine in development but not in my production environment. It doesn't look like a problem with my Asset Pipeline because all other assets load without any issues.

On the page, Google Chrome gives me this error:

Uncaught TypeError: Cannot set property 'dir' of undefined

while Firefox just throws this in the console:

TypeError: c[a] is undefined[Learn More]

---

What I've tried so far:

• Use Uglifier.new(mangle: false) as the JS Compressor in Sprockets
• Manually set CKEDITOR_BASEPATH

The asset files generated by rake asset:precompile in public/assets/ckeditor all have a hash at the end like this:

ckeditor-e0b9bfe15298d2b2dd388960b27d35e6a18c89b2390f8986d398c30da5496e4b.js
config-1fb318e1cc0eea7b8c181941c3c1f09d2b96107b2f7ff4891755fbb2201ba53d.js
contents-4540cf2cb7116b32bac2995494c4fc0c55804444f37c02cfa11256bd695e4194.css
# etc

but the JS doesn't seem to be loading them and trying to fix that now.

---

Code

My Javascript File:

//= require pages-javascript
//= require ckeditor/init
//= require_tree ./ckeditor
//= require_self

Assets Initializer:

# config/initializers/assets.rb
Rails.application.config.assets.version = '1.0'

Rails.application.config.assets.precompile << Proc.new do |filename, full_path|
  if filename =~ /\.(css|js|svg|eot|woff|ttf)\z/
    app_assets_path = Rails.root.join('app', 'assets').to_s
    if full_path.starts_with? app_assets_path
      Rails.logger.info "including asset: " + full_path
      true
    else
      Rails.logger.info "excluding asset: " + full_path
      false
    end
  else
    false
  end
end

Rails.application.config.assets.precompile += %w( ckeditor/* )

Answer 1

Going through the Library Issues and Pull Requests on Github, turns out it wasn't an issue with my code but a bug in the 4.x.x versions of the Ruby Gem itself (causing incompatibilities with Rails 5).

Someone already opened an issue and a PR fixing this was also merged to master 2 months ago, but there were no releases after it containing the patch. So my temporary solution is to load the gem directly from master:

gem 'ckeditor', github: 'galetahub/ckeditor', ref: '11d3a5b'