Ok, this is how:
Airtable
- Create the two (linked) tables in Airtable, list and details.
- In list table create a
DetailURL
column, type formula, something like"domain" & SEO:Slug & "/r/" & DetailsID
- In details table have your Primary id column set to
RecordID()
Softr
- List block (points to list table) → Action → Open URL → set to DetailURL