How to Error message in store sync callback

[Alexei Ptitchkin]

To handle success or fail store.sync() I use to pass sync options with callbacks.

var syncOptions = {controller:this, 
                record:record,
                recordId:recordId,
                dealerStore:dealerStore, 
                wnd:wnd,
                success:this.lookupDealerSyncCallback,
                failure:this.failureSyncCallback};
        this.getDealersLookupStore().sync(syncOptions);

On server side I always write json response to client using:

        this.getResponse().setContentType("application/json;charset=UTF-8");
        this.getResponse().getWriter().write(json);

then if sync() succeed within call back I can access response text via batch.operations[0].response.responseText

    lookupDealerSyncCallback:function (batch, syncOptions){
        syncOptions.dealerStore.load();
        syncOptions.wnd.close();

        
        //batch.operations[0].response.responseText = "{"dealers":
        //        {"dealerCode":"BSDA","dealerName":"BUSINESS SOLUTIONS DIVISION,",
        //        "hasDefaultAllocation":"N","hasForecast":"Y","hasSellHand":"N",
        //        "hasQuota":"Y","createOn":"08/22/2012 13:29:09","createBy":"Eric Gu",
        //        "updateOn":"08/22/2012 13:29:09","updateBy":"Eric Gu",
        //        "ordinal":0,"id":283,"idx":0},"success": true }"
        
        var responseObj = Ext.JSON.decode(batch.operations[0].response.responseText,true);
        var newDealerId = responseObj.dealers.id;
        syncOptions.record.setId(newDealerId);
            syncOptions.controller.openDealerDetailWnd(null, syncOptions.record);
    },

but if sync() fail batch.operations[0] does not have 'response' property and I don't have any message to show.

    failureSyncCallback:function (batch, syncOptions){
            syncOptions.dealerStore.load();
        /*
         * here batch.operations[0] does not have 'response' property
         */
      },

How I can get error message in failure callback?

Thank you.

[vietits]

See my answer for the same question here: http://www.sencha.com/forum/showthre...re-listener...

[Alexei Ptitchkin]

See my answer for the same question here: http://www.sencha.com/forum/showthre...re-listener...

Thanks for response.
My point was: - Why I can NOT see response in batch.operations[0]?

As a way around I did "Message alert in store's exception listener" and silent failure recovery in "failureSyncCallback:function". But I really don't like to have such multistage error processing.