How to go to a specific portal row

The requirement:   In a portal, you need to be able to highlight a given record, and ensure that the portal row is visible.  (For example, a portal contains 20 records, but displays only 3.  You know which record you’re interested in, and you have the id of the record stashed in a global field, but the record may be out of sight when you display the portal.)

I devised a functional, but clunky, way of achieving this, then asked for advice on the Filemaker Technet.  I got 2 really good suggestions.  The first, from David Jondreau, suggested this:


So, the portal shows sessions (SSN) within a programme (PGM), and the id of the session that we’re interested in is held in the global field PGM::CURRENTSESSIONID.  The loop just goes through the portal rows until it hits that record.  “Go to portal row” ensures that it’s highlighted and visible.

The second suggestion, from Mike Beargie, uses a custom function called “ListIndex” (available from Brian Dunning’s site).  It’s a really concise one-liner:


The ListIndex CF just finds the position of the global id within the list of related SSN rec ids, and goes to that portal row, all in one script step.  Really neat, but, as Mike pointed out, it relies on the portal not being filtered.