Hi, Depending on the model you use, you may need to ovveride the setObject() method.
from the API docs default void setObject(T object) Throws: UnsupportedOperationException - unless overridden https://ci.apache.org/projects/wicket/apidocs/9.x/org/apache/wicket/model/IModel.html#setObject(T) <https://ci.apache.org/projects/wicket/apidocs/9.x/org/apache/wicket/model/IModel.html#setObject(T)> François > Le 30 mai 2020 à 15:46, smallufo <small...@gmail.com> a écrit : > > Hi > I am building an app with complicated forms , nested models ... > Some times it obsesses me is the UnsupportedOperationException : > > java.lang.UnsupportedOperationException: Override this method to support > setObject(Object) > > at org.apache.wicket.model.IModel.setObject(IModel.java:84) > It doesn't pinpoint me which model , which form , which panel... > very hard to debug... > For non-serializable exception , it can provide meaning information , even > pinpoint which field causes the problem. > I hope some day , this UnsupportedOperationException can also be so > informative. > > Thanks.
