File creation in jquery + Rails

I am new to Rails. In my web application, the user can type the
contents of a file in a textarea or a content Editable iFrame and when
he saves the file, the contents should be written to the file with the
file extension specified by the user. How can I do so??

Where are you trying to save the file? On the users PC or on the server?

Colin

On the server

On the server

Please don't top post on this list. Thanks
Put your text area in a form with a submit button. In the controller
get the contents from params and write it to the file.

Colin