Thorsten Schöning created WICKET-6158:
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Summary: Provide error message for Ajax requests in
DefaultExceptionMapper
Key: WICKET-6158
URL: https://issues.apache.org/jira/browse/WICKET-6158
Project: Wicket
Issue Type: Improvement
Components: wicket
Affects Versions: 7.3.0
Reporter: Thorsten Schöning
DefaultExceptionMapper.internalMap recognizes if something is an Ajax request
or not and depending on the current application settings a special error
handler is returned in case of Ajax. I would like to keep that approach, but
additionally optionally forward at least some part of the currently available
exception message with that given handler. The handler in general is capable of
managing an arbitrary message, that's already used in
ServletWebRequest.getClientUrl. The problem with the current approach is that's
it's not easily overridable, because internalMap is private and such.
So I would like to suggest that you either introduce an additional
AjaxErrorHandlingStrategy like INVOKE_FAILURE_HANDLER_WITH_MSG and provide the
exception message in that case to the handler or add a protected callback which
gets the current exception and returns the handler to return in case of Ajax.
Both approaches make sense to me and would help me a lot in my use case, but I
guess the protected callback is more flexible in general.
Thanks for consideration!
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