Hello,
I created a custom field type inheriting from SPFieldLookup.
I added JSLink for custom client-side rendering.
All of that works, including the custom editing control in the JsGrid (quick-edit alias Datasheet-View).
The problem arises, when multiple values shall be entered and saved in the grid.
SharePoint assigns my field a PropTypeId of "String" (with multipleValues = true though).
The original Lookup the field inherits from has a PropType of Lookup of course, but this isn't inherited.
I am only able to save one value in this field, never multiple.
Is there any solution to this yet? I couldn't find anything related anywhere.
Regards,
Matt