We have a mapping service running in Portal 10.5.1 that has a related table. There is a relationship class established in our underlying GDB. What is the best way (or widget) to search for records in this related table and have it find and zoom to the related geometry? I have tested the out of the box Search Widget and the attributes within the related table are not options as searchable attributes. Any pointers would be appreciated.
You can try the Query widget. If you set a related table as the query source, from the result you can "View all related records" from the context menu to find the related features.