Hey,
if anyone consider it useful, i’ve created extension witch uses jQuery JSON wyswig editor plugin, currently it only supports live edit and dump by copy and pase, of edited data, but send edited data using POST (maybe in ajax) is planned.
Any contribution is welcome
http://www.yiiframework.com/extension/jsoneditorview/
http://github.com/canni/jsonEditorView
Regards,
Darius