JSF h:selectBooleanCheckbox inside ui:repeat - varStatus.index works, var doesn't
jsf, mojarra, uirepeat
Solution
That's because the `Boolean` as being an immutable class doesn't have a setter method for the value. When referencing it as a list item by index instead, EL will be able to set the new value on the `List` by index like so `list.add(status.index, newValue)`. An alternative is to make it a property of a mutable model class and have a collection of it instead like so `List<Item>` which you reference by `<h:selectBooleanCheckbox value="#{item.checkbox}"/>`.
This is not specifically related to `Boolean`, you would have exactly the same problem when using for example `List<String>` in an `<ui:repeat><h:inputText>`.
See also:
- Using <ui:repeat><h:inputText> on a List<String> doesn't update model values
Problem
Can someone please explain this phenomenon? I am using Mojarra 2.1.6 - Glassfish 3.1.2. I have a checkbox inside a `ui:repeat`. The `ui:repeat` is looping over a list of booleans from my managed bean. Each individual checkbox is bound to an element of that list. For example: ``` <ui:repeat var="checkbox" value="#{checkboxTestBean.list}" varStatus="status"> <h:selectBooleanCheckbox value="#{checkbox}"/> </ui:repeat> ``` The problem is the values aren't getting applied to the managed bean. When I submit and re-render the form, the values don't stick. However, if I index into the managed bean element explicitly, by changing `value=#{checkbox}` above to `value="#{checkboxTestBean.list[status.index]}"`, everything works. Any ideas why that might be the case? XHTML: ``` <h:form> <div> Using value="#\{var\}" <ui:repeat var="checkbox" value="#{checkboxTestBean.list}" varStatus="status"> <h:selectBooleanCheckbox value="#{checkbox}"/> </ui:repeat> </div> <div> Using value="#\{varStatus.index\}" <ui:repeat var="checkbox" value="#{checkboxTestBean.list}" varStatus="status"> <h:selectBooleanCheckbox value="#{checkboxTestBean.list[status.index]}"/> </ui:repeat> </div> <h:commandLink actionListener="#{checkboxTestBean.actionListener}"> PROCESS FORM <f:ajax execute="@form" render="@form"/> </h:commandLink> </h:form> ``` Java: ``` @ManagedBean @ViewScoped public class CheckboxTestBean { public List<Boolean> list = new ArrayList<Boolean>(); public CheckboxTestBean() { for (int i = 0; i < 5; i++) { list.add(Boolean.FALSE); } } public void actionListener(ActionEvent evt) { System.out.println("*** dumping whole form"); System.out.println("*** list = " + list); } public List<Boolean> getList() { return list; } public void setList(List<Boolean> list) { this.list = list; } } ```