Re: updating a zone inside of an ajaxformloop

[George Christman]

Ray, I'm not sure if this helps, but here is an example of a AjaxFormLoop
with a nested select / zone and nested within the zone is another select.
The tempId in the value encoder is just a @Transient UUID generated from
your entity class. Hope it helps. 


        <t:AjaxFormLoop source="purchaseRequests" value="purchaseRequest"
encoder="encoder">
            <t:TextField value="purchaseRequest.name"/>
            <t:Select value="purchaseRequest.parentState"
model="parentStateModel" zone="prop:loopZoneId"/>
            <t:Zone t:id="loopZone" id="prop:loopZoneId">
                <t:Select value="purchaseRequest.parentState"
model="parentStateModel"/>
            </t:Zone>
        </t:AjaxFormLoop>





    @Inject 
    private Session session;

    @Property
    private List<PurchaseRequest> purchaseRequests;

    @Persist
    @Property
    private PurchaseRequest purchaseRequest;

    @Persist
    @Property    
    private SelectModel parentStateModel;

    @Inject
    private SelectModelFactory selectModelFactory;

    @InjectComponent
    private Zone loopZone;

    private List<ParentState> parentStates;

    void onPrepare() {
        purchaseRequests =
session.createCriteria(PurchaseRequest.class).list();
        
        parentStates = session.createCriteria(ParentState.class).list();
        parentStateModel = selectModelFactory.create(parentStates, "label");
    }

    @SuppressWarnings("unchecked")
    public ValueEncoder getEncoder() {
        return new ValueEncoder<PurchaseRequest>() {
            public String toClient(PurchaseRequest value) {
                Long key = value.getTempId();
                return key.toString();
            }

            public PurchaseRequest toValue(String keyAsString) {
                Long key = new Long(keyAsString);
                for (PurchaseRequest holder : purchaseRequests) {
                    if (holder.getTempId() == key) {
                        return holder;
                    }
                }
                return null;
            }
        };
    }

    PurchaseRequest onAddRow() {
        PurchaseRequest newPurchaseRequest = new PurchaseRequest();
        return newPurchaseRequest;
    }

    Object onValueChanged() {
        return loopZone.getBody();
    }

    public String getLoopZoneId() {
        return "purchaseRequest-" + getEncoder().toClient(purchaseRequest);
    }



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