What are some good ways of doing validation with AJAX in Rails (with
Prototype/Scriptaculous)? I have some Ajax.InPlaceEditors, and I would
like the page with the editors on it to display errors if the data given
is e.g. too short, too long, wrong format…
Ideally, this should be DRY in regard to the validators.
A related question: is there any way of DRY between the database table
field constraints and validators? That is, can you make your model
automatically pick up on e.g. maxlength based on the table field’s