Field Validation in Fiori Elements - List Report, on SAP Gateway with ABAP

[former_member185943]

Hello,

I spent some time searching for the reply and surprisingly enough, could not find even questions, not to mention answers, about a topic which seems quite fundamental to me.

I made a SAP Gateway (SEGW) service in a "classical" way (only ABAP, no CDS views). Based on this service I made a SAP Fiori Elements - List Report app with CRUD capabilities.

After pushing "Edit", the fields become editable.

If user enters incorrect data, I would like to display error message on the affected fields, but immediately, not after pushing "Save" button. Also, I expect that other actions are disabled (like "Save") before user corrects entry.

For example: "Carrier XY does not exist".

In other technologies there are solutions:

SAP GUI Dynpro:

• Foreign key relationship in dictionary
• In PAI: FIELD scarr-carrid MODULE validate_carrid
• ABAP Report: AT SELECTION-SCREEN ON pa_carr

CDS View:

• @ObjectModel.foreignKey.association

BOPF:

• Validations

Is there any solution in Fiori List Report on SAP Gateway?

Thanks!

Kind regards,

Igor

[soumya_r]

Hi,

you can extend the list report view where you would like to do the validation and in the controller, you can trigger the event handler method to validate input and show the error message.

Incase of input field, liveChange="handleLiveChange" this attribute can help to handle the validation and set valueState property as invalid entry.

I hope this is what you are looking for the solution.

Thanks,

Soumya