 <p>I use FCKEditorOnRails plugin: <a href="http://github.com/UnderpantsGnome/fckeditor_on_rails/tree/master" rel="nofollow noreferrer">http://github.com/UnderpantsGnome/fckeditor_on_rails/tree/master</a></p> <p>Note that you can generally drop in the latest version of FCKEditor without much tweaking if you're running into bugs in the older version.</p>