Question

I have this new problem. I have the following code in JSF 2.0 with Primefaces 2.2.1:

<h:selectOneMenu id="cmbRole8" value="#{myWorkflow.posToInsert[7]}" >
    <f:selectItem itemLabel="Select a position..." itemValue="-1" />
    <f:selectItems value="#{appPositions.allPositions}" var="ap"
     itemLabel="#{ap.roDescription}" itemValue="#{ap.roPositionid}" />
</h:selectOneMenu>

This is repeated 7 more times for a total of 8 selectOneMenu controls where I need to get user input. Obviously this doesn’t work because the getters and setters don’t know which index to use when assigning the values. How can I achieve this properly?

Answer 1

Obviously this doesn’t work because the getters and setters don’t know which index to use when assigning the values.

This is not true. Your problem is probably caused because you didn’t preinitialize the array yourself. JSF/EL namely won’t do it for you (like as with every other “nested object”). It will only set the array value by the given index.

E.g.

private int[] positions;

@PostConstruct
public void init() {
    positions = new int[3]; // You need to preinitialize it yourself!
}

public int[] getPositions() {
    return positions;
}

// No setter needed!

with

<h:selectOneMenu value="#{bean.positions[0]}" ... />
<h:selectOneMenu value="#{bean.positions[1]}" ... />
<h:selectOneMenu value="#{bean.positions[2]}" ... />