Salesforce1: How to reference the Parent Id on "new" action?

Question

I have a mobile app with two Objects which are linked via Master-Detail. I have overwritten the new page for creating an child record with an custom visualforce page.

This page should create an record with user entered data, and (after saving it) redirect to the parent Object.

I can't use the standard save action because of architectual reasons. So instead I use a save-button executing a "doSave" action in the controller extension and, on completion, redirecting with the "sforce.one" object to the parent object.

This works fine on "edit" but on the "new"-action the parent-Id parameter is missing.

Child__c = child Object

mdr_Parent__c = master-detail field on child

form = visualforce markup element to rerender

This is the Visualforce markup:

<!--BUTTON--> <apex:outputPanel> <center> <apex:commandButton value="Save" action="{!doSave}" oncomplete="sforce.one.navigateToSObject('{!Child__c.mdr_Parent__c}');" rerender="form"/>
</center> </apex:outputPanel>

And these are the controller extension constructor and method:

public Child__c child {get; private set;}
private ApexPages.StandardController stdCtrl;


// CONSTRUCTOR

public ExpenseCtrlExt(ApexPages.StandardController standardController) {
    stdCtrl = standardController;
    child = (Child__c) stdCtrl.getRecord();
}


public void doSave() {
    try {
        upsert child;
    }
    catch(Exception ignored){}
}

The button saves the record but does not redirect to the Parent record.

Thanks for helping.

Answer 1

According to the docs:

http://www.salesforce.com/us/developer/docs/pages/Content/pages_compref_commandButton.htm

oncomplete only fires once an Ajax request is completed, whereas yours is a regular form postback. You'll need to add a rerender attribute to turn it into an Ajax request.

Answer 2

Well after some years i got curious and recreated the situation. Seems like Salesforce must have fixed something. The exact code from above works fine now in S1 Desktop Simulators aswell as in actual Smartphone S1.