I used to use store triggers in OpenERP 7 to make the function and related fields searchable, filterable and groupable: https://doc.odoo.com/v6.0/developer/2_5_Objects_Fields_Methods/field_type.html/#store-parameter

but with Odoo v8.0 I see there's nothing like store trigger to store the values in database: https://github.com/odoo/odoo/issues/4628 .. the store parameter now accepts only Boolean, it doesn't accept dict anymore.

So I have used the search function to make the field searchable and filterable. but I still cannot make it groupable and `store=True` may make it store old data without updating it!

Is there any way better to make computed/related field updated and groupable in the same time? or is `store=True` enough?