I believe a better approach would be to:
- Update the
embeddable_hosttable to add a custom class attribute - Update the admin UI to allow input in that field
- Update the embed erb template to show that custom value
I have security concerns otherwise with passing the value through on the client side.
It’s a lot more work but I feel strongly it’s the better way to solve this issue. If it’s outside your realm of experience, maybe someone from the community could jump in and help you out?