We have rewritten the rails in-place editor, described in the rails recipes book by Chad Fowler, in RESTful design. You can install it as a plugin (http://source.simplificator.com/svn/plugins/inplace/).

If you use special characters like umlauts, mute vowels or japanese characters patch your prototype.js with prototype-umlaut-patch.patch. The patch is needed because the original version of prototype.js doesn't decode the mutated vowels correctly.

Patch: prototype-umlaut-patch.patch