oData v2 Model Two-Way binding not updating properties after user inputs in the UI.

[former_member619899]

Hello experts, I am currently trying to get my oData model to refresh changes locally after user inputs in my UI. I have a sap.m.List type control directly binded to my v2 Odata Model, and I have set my default binding mode to Two-way by using the following method:

oModel.setDefaultBindingMode(sap.ui.model.BindingMode.TwoWay);

My list control has several Input or editable fields for the user to modify the data belonging to my binded entity, but I haven't been able to successfuly refresh my model to capture those changes in the UI. I am able to retrieve them by using the getPendingChanges() model method:

I suppose I could capture the changes from the array returned by getPendingChanges() and then manually setting them to my model by using setProperty(), but I'm hoping there's a simpler and more effective way to achieve what I need to do.

So far I've tried using refresh() both at model level and at view/control level, but that didn't solve my issue either. I also tried using oModel.updateBindings() but this seems to always return 'undefined'.

[catano]

Hi pampa_scp_dev52 ,

Could you please share, how do you bind the model to the component?
Your modifications that are not reflected is done on the UI or is it done programatically?

Regards,

Peter

[Kevin_Gottwald]

Hello,

as you can see in the sapui5 documentation(screenshot below), two-way binding ist not supported for list binding but for property binding. 

Best regards,

Kevin

[junwu]

what business function you are trying to achieve?

odatamodel is just different from jsonmodel.

[rohit_singhal]

Hi Pampa,

Looking at your problem statement, it looks like the changes have not been submitted.

There is a method for oData Model called submitChanges. I think once you invoke it, the above issue should resolve.

Alternatively, is there a specific requirement due to which you are not using create/update entry methods in oData Model to create and update entries instead of using it in two-way mode?

Do let me know how these suggestions work out for you.

Best Regards,

Rohit

[former_member619899]

Hi rohit.singhal, thanks for your answer! I understand submitChanges() is the method you call to send your changes over to the backend service, while what I need to do is for my changes to apply locally in my model so I am able to retrieve them by doing oModel.getData() or getObject() or even getProperty(). I know this works fine if I use JSON models because the twoway binding immediately applies every change made in the UI to my local model but I am trying to replicate that same behavior on a oData v2 model instead.