TinyMCE with Ajax in Rails
In order to get TinyMCE to work with Ajax calls, you need to tell the plugin to save the contents prior to making the post. This code demonstrates how you would do that.
View as text
<% form_remote_tag :url => whatever, :before => "tinyMCE.triggerSave(true,true)" do %>
<%= text_area :object, :method, :class => "mceEditor" %>
<%= submit_tag "save" %>
<% end %>