Posted 4 September 2018, 6:54 am EST
I am trying to add a header row above the filter header row.
I want this row to have a custom text title and to show that columns sort arrow and sort that column on click.
I am able to add the row, but I am not sure how to add the column sort ability.
https://stackblitz.com/edit/angular-ezjcmk?file=app%2Fapp.component.ts