Froala

This assume you want to use the FREE version of Froala Editor (which shows their badge in the editor). For more information, please see: http://www.froala.com/wysiwyg-editor

How to use:

1. Add Froala's assets gem.

   Note: This functionality is currently available in the master branches of both rails_admin and froala/wysiwyg-rails, but neither gem has released a version with these features. For now, we'll need to use specific revisions of these gems from GitHub:

   gem "rails_admin", github: "sferik/rails_admin", ref: "43f368a" # pending release of > 0.6.7
   gem "wysiwyg-rails", github: "froala/wysiwyg-rails", ref: "8daf0c3" # pending release of > 1.2.6
   

2. Enabling froala editor for your field is easy

edit do
  field :content, :froala
end

# Optionally providing froala options (see https://editor.froala.com/options)
edit do
  field :content, :froala do
    config_options {
      inlineMode: false,
      paragraphy: false
    }
  end
end

More here and here

Using Plugins

Some additional configuration is necessary in order to use Froala plugins:

1. In app/assets/javascripts/rails_admin/custom/ui.js:

   //= require froala_editor.min
   // Include the plugins you want:
   //= require plugins/block_styles.min
   //= require plugins/colors.min
   //= require plugins/media_manager.min
   //= require plugins/tables.min
   //= require plugins/video.min
   //= require plugins/font_family.min
   //= require plugins/font_size.min
   //= require plugins/file_upload.min
   //= require plugins/lists.min
   //= require plugins/char_counter.min
   //= require plugins/fullscreen.min
   //= require plugins/urls.min
   //= require plugins/inline_styles.min
   

2. In app/assets/stylesheets/rails_admin/custom/theming.scss:

   @import "froala_editor.min";
   @import "froala_style.min";
   @import "font-awesome";
   

3. If you're deploying to Heroku, you may need to add these files to Rails' asset precompilation list.

   In config/initializers/assets.rb:

   Rails.application.config.assets.precompile += %w(rails_admin/custom/theming.css rails_admin/custom/ui.js)