grid filter combo


I need filter by combo for grid like this: … combo.html

But a book can have more then one Author.
I would like to have unique list of Authors in the combo filer and multiple Authors for a book.


Filter combo:
John Grisham
Stephen King
Honore de Balzac

book1 - Authors:John Grisham
book2 - Authors:John Grisham,Stephen King
book3 - Authors:Stephen King,Honore de Balzac
book4 - Authors:John Grisham,Stephen King,Honore de Balzac

If ‘John Grisham’ is selected in the filter combo expected result will be:

How can I do it?

Thanks a lot

Unfortunately such feature is not supported.
The only way is to create your own custom filter.
Here you can find a tutorial about the filter customization: … ilterlogic