Setting a value for an attribute in the create/edit contract form causes WicketRuntimeException

[czarnecki]

A WicketRuntimeException gets thrown when setting a value for an attribute in the create/edit contract form because there is no setter for class org.wickedsource.budgeteer.service.contract.DynamicAttributeField#setValue.
This seems to be an issue with the wicket LazyModel here:

budgeteer/budgeteer-web-interface/src/main/java/org/wickedsource/budgeteer/web/pages/contract/edit/form/EditContractForm.java

Line 109 in 74f51b0

item.add(new TextField<String>("attributeValue", model(from(item.getModelObject()).getValue())));

An easy fix would be to replace LazyModel with a LambdaModel, like this:

LambdaModel.of(item.getModel(), DynamicAttributeField::getValue, DynamicAttributeField::setValue)