I need to make the Relationship Field Search functionality to search also in 3 other Custom Fields and then display the result if it match any of them.
In other words: I have Title where is the name of the person and 3 custom fields with phone, email, etc.
It would be great if when I type in the search box the list with related posts is filtered by any of these fields.
I found the flowing in the documentation, but somehow can not came up with the idea how to use the search Variable for value.
Any suggestions will be highly appreciated.
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