empty checkbox list results in "Invalid field value for field" error when using
Collection or array containing non-boolean values.
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Key: WW-2339
URL: https://issues.apache.org/struts/browse/WW-2339
Project: Struts 2
Issue Type: Bug
Components: Core Interceptors
Affects Versions: 2.0.11
Environment: Tomcat 6, XWork 2.0.4
Reporter: Mike Calmus
I have an action that has a "selectedPageItems" element of type List<Long>.
Using a JSp containing several checkboxes with value attributes of type Long, I
receive an "Invalid field value for field" error when no items are selected.
The CheckboxInterceptor class has the following code block:
// is this checkbox checked/submitted?
if (!parameters.containsKey(name)) {
// if not, let's be sure to default the value to false
newParams.put(name, uncheckedValue);
}
This causes a single boolean (or String) value to be added to the parameter
list when no values are selected. This works fine if the Collection holds
String or boolean values. However, in my situation the value can not be
assigned to the Collection, giving the error.
A work-around is to add a fake method to the Action that takes a boolean value,
but this is undesirable.
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