How to Sort Column containing html (gridjs)

[jwmurray]

I have a column with a link using

gridjs.html(<a id='{{rule.id}}' href='{{ url_for('rule', rule_id=rule.id) }}'>{{ rule.id }})

I would like to sort on the rule.id, the portion in the anchor text.

I have tried to write a custom compare sort function, but have not been able to make that work. Has someone else solved sorting a column with HTML in it?