Rails 3: Change validation error formatting?

Hello, I've been reading that Rails 3 offers a bunch of new validation
features.

Is there a way to customize the validation error formatting? For
example, I prefer to style the elements surrounding a form input
containing an error, not just the input itself.

Also, I might like to define my own class names for styling these
elements, for example if they don't conform to my naming standards.

Is this easier in Rails 3 than in 2?

I found a few articles about new validation functionality, but they
seem to be formatting the old way.

Thanks.

Since I have no experience Rails 2, I can't compare the two. However,
it's pretty easy with Rails 3. You can override the default behavior
like so:

ActionView::Base.field_error_proc = Proc.new do |html_tag, instance|
  *** YOUR CODE HERE ***
end

The README that comes with the ActionPack gem has a more verbose
explanation about this. (I just wish there was a way to tell it to add
some kind of styling if a field validated properly!)

Hello, thanks for your response.

I'm looking at actionpack-3.0.0.beta3/README and can't find any
mention of this.

Using the example below, is there a way to style the elements
surrounding the invalid input (and not just the input itself)?

I'd like to change the CSS class name, too. Basically I'd like to
customize validation without adding a ton of overhead to the
framework's existing procedures.