On 4 Aug 2025, at 02:11, Ondra Cada via Webobjects-dev 
<webobjects-dev@lists.apple.com> wrote:

> whatever I try, it looks like ERXOptGroupPopupButton does not support lists 
> like other list bindings do, and insists on an NSArray instead, yielding for 
> other lists
> 
> java.util.ArrayList cannot be cast to com.webobjects.foundation.NSArray 
> (ClassCastException)
> 
> Is this a Wonder-side bug, or do I overlook something of importance?

It certainly does look like ERXOptGroupPopupButton attempts an explicit cast to 
NSArray right here:

https://github.com/wocommunity/wonder/blob/11e2f351eb6caed2071bcaf1db6396d31e1a8169/Frameworks/Core/ERExtensions/Sources/com/webobjects/appserver/_private/ERXOptGroupPopupButton.java#L86


-- 
Paul Hoadley
https://logicsquad.net/
https://www.linkedin.com/company/logic-squad/

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