since in Version 2.x 'idField' is removed how am I supposed to set a unique identifier on data (for updating) if I'm not able to subclass Model since I'm using IE
Setting a id field which is a duplicate of a different field seems unreasonable, since the amout of data we are using is huge and sending the same data twice impacts the Performance
without duplicating and just using
field: [{name: 'id', dataSource: 'myId'}]
actually renames the field to id so myId is not usable anymore