SAPUI5：向导/分支-等待WizardStep完成事件后返回OData

Question

my problem is as follows.

I have a Wizard in Branching mode. On completing a Step of the Wizard, the complete method is called. Within this method I send out an OData call to the Backend to determin the NextStep that should be shown. Hence the call will return the NextStep it is not defined yet and the Framework will Crash with the error, that the NextStep is not defined.

So is there a way to pause/wait/sleep for the return of the OData call without crashing the Framework?

I would appreciate every help. Thanks!

Example XML:

<Wizard id="MainWizard" complete="wizardCompletedHandler" enableBranching="true">
                        <WizardStep id="Step1" title="title" validated="true" subsequentSteps="Step2, Step3" complete="onStepOneComplete"
                            icon="sap-icon://multi-select">

Example onStepOneComplete:

onStepOneComplete: function(oEvent) {


        this.getView().getModel().submitChanges();

        var iNextStep = parseInt(this.getView().getModel().getProperty("/SomeSet('123')/NextStep"), 10);

        this.byId("Step1").setNextStep(iNextStep);
    }

Answer 1

Try using the "success" callback of submitChanges

Something like:

onStepOneComplete: function(oEvent) {

    var that = this; // needed to keep "this" object in callback
    this.getView().getModel().submitChanges({
        success: function(oResponse){ 
            var iNextStep = parseInt(
                that.getView().getModel().getProperty("/SomeSet('123')/NextStep"), 10
            );

            that.byId("Step1").setNextStep(iNextStep);
        }
    });

}

You can grab the "NextStep" property from the oResponse object instead of the model, but I've left your code for clarity on what exactly I'm suggesting.