Prototype Inheritance new object on existing form view
I would like to extend a class (obj1) using prototype inheritance (_name=new, _inherit=obj1).
My question is can I determine if obj1 has a corresponding new object from the existing obj1 form view?
Ideally I would like to extend the existing obj1 form view to include an "additional configuration" button to open to the associated new object's form view. If no new object exists than this button should be hidden/disabled.
EDIT: Additional information, this is for Odoo 9.0