Ckeditor

CKEditor is a ready-for-use HTML text editor designed to simplify web content creation. It's a WYSIWYG editor that brings common word processor features directly to your web pages. Enhance your website experience with our community maintained editor. ckeditor.com

Features

• Ckeditor version 4.3 (full)
• Rails 4 integration
• Files browser
• HTML5 files uploader
• Hooks for formtastic and simple_form forms generators

Installation

For basic usage just include ckeditor gem:

gem "ckeditor"

For files uploading support you need generage models for file storage. Currently supported next backends:

• ActiveRecord (paperclip, carrierwave, dragonfly)
• Mongoid (paperclip, carrierwave, dragonfly)

How generate models for store uploading files

ActiveRecord + paperclip

For active_record orm is used paperclip gem (it's by default).

gem "paperclip"

rails generate ckeditor:install --orm=active_record --backend=paperclip

ActiveRecord + carrierwave

gem "carrierwave"
gem "mini_magick"

rails generate ckeditor:install --orm=active_record --backend=carrierwave

Mongoid + paperclip

gem 'mongoid-paperclip', :require => 'mongoid_paperclip'

rails generate ckeditor:install --orm=mongoid --backend=paperclip

Mongoid + carrierwave

gem "carrierwave-mongoid", :require => 'carrierwave/mongoid'
gem "mini_magick"

rails generate ckeditor:install --orm=mongoid --backend=carrierwave

Load generated models

All ckeditor models will be generated into app/models/ckeditor folder. Autoload ckeditor models folder (application.rb):

config.autoload_paths += %W(#{config.root}/app/models/ckeditor)

Mount engine in your routes (config/routes.rb):

mount Ckeditor::Engine => "/ckeditor"

Usage

Include ckeditor javascripts rails 3.2 (application.js):

//= require ckeditor/init

Form helpers:

<%= form_for @page do |form| -%>
  ...
  <%= form.cktext_area :notes, :class => "someclass", :ckeditor => {:language => "uk"} %>
  ...
  <%= form.cktext_area :content, :value => "Default value", :id => "sometext" %>
  ...
  <%= cktext_area :page, :info, :cols => 40, :ckeditor => {:uiColor => "#AADC6E", :toolbar => "mini"} %>
  ...
<% end -%>

All ckeditor options here

In order to configure the ckeditor default options, create files:

app/assets/javascripts/ckeditor/config.js

app/assets/javascripts/ckeditor/contents.css

Usage with Rails 4 assets

In order to use rails 4 assets with digest in production environment you need some preparing.

First, you need to include in application.js before ckeditor/init

//= require ckeditor/override

It forces ckeditor core to respect digested assets.

Next you need to check, that some non-core plugins and skins don't use core ckeditor functions to determine path to assets. Therefore we have to create a rake task thats copies the original assets and creates a non-digest version of it. Some example of such rake task is:

namespace :ckeditor do
  desc 'Create nondigest versions of some ckeditor assets (e.g. moono skin png)'
  task :create_nondigest_assets do
    fingerprint = /\-[0-9a-f]{32}\./
    for file in Dir['public/assets/ckeditor/contents-*.css', 'public/assets/ckeditor/skins/moono/*.png']
      next unless file =~ fingerprint
      nondigest = file.sub fingerprint, '.' # contents-0d8ffa186a00f5063461bc0ba0d96087.css => contents.css
      FileUtils.cp file, nondigest, verbose: true
    end
  end
end

# auto run ckeditor:create_nondigest_assets after assets:precompile
Rake::Task['assets:precompile'].enhance do
  Rake::Task['ckeditor:create_nondigest_assets'].invoke
end

This also works on heroku. Even after restarting dynos running on a cedar stack, the assets will remain.

You can include this rake task in a capistrano task (if you are deploying via capistrano):

desc 'copy ckeditor nondigest assets'
task :copy_nondigest_assets, roles: :app do
  run "cd #{latest_release} && #{rake} RAILS_ENV=#{rails_env} ckeditor:copy_nondigest_assets"
end
after 'deploy:assets:precompile', 'copy_nondigest_assets'

Periodically check your error monitoring tool, if you see some part of ckeditor try to load unexisting non-digest asset - if so just add it in the ckeditor rake task.

AJAX

jQuery sample:

<script type='text/javascript' charset='UTF-8'>
  $(document).ready(function(){
    $('form[data-remote]').bind("ajax:before", function(){
      for (instance in CKEDITOR.instances){
        CKEDITOR.instances[instance].updateElement();
      }
    });
  });
</script>

Formtastic integration

<%= form.input :content, :as => :ckeditor %>
<%= form.input :content, :as => :ckeditor, :input_html => { :ckeditor => { :height => 400 } } %>

SimpleForm integration

<%= form.input :content, :as => :ckeditor, :input_html => { :ckeditor => {:toolbar => 'Full'} } %>

CanCan integration

To use cancan with Ckeditor, add this to an initializer.

# in config/initializers/ckeditor.rb

Ckeditor.setup do |config|
  config.authorize_with :cancan
end

At this point, all authorization will fail and no one will be able to access the filebrowser pages. To grant access, add this to Ability#initialize

# Always performed
can :access, :ckeditor   # needed to access Ckeditor filebrowser

# Performed checks for actions:
can [:read, :create, :destroy], Ckeditor::Picture
can [:read, :create, :destroy], Ckeditor::AttachmentFile

I18n

en:
  ckeditor:
    page_title: "CKEditor Files Manager"
    confirm_delete: "Delete file?"
    buttons:
      cancel: "Cancel"
      upload: "Upload"
      delete: "Delete"

Tests

$> rake test
$> rake test CKEDITOR_ORM=mongoid
$> rake test CKEDITOR_BACKEND=carrierwave

$> rake test:controllers
$> rake test:generators
$> rake test:integration
$> rake test:models

This project rocks and uses MIT-LICENSE.