Currently some fields like the URL field allows only one value.
Can you explain what a multivalue field formatter is, with a specific example.
Well, Fibery doesn’t really have the concept of arrays, except as entities in a database.
So there is no such thing as the ‘unique values in a collection field’ since all entries in a collection field are, per definition, unique.
Of course, they might have identical values in one of more of their fields (which seems to be the case you’re interested in).
If the field by which uniqueness is determined is a select field, or a collection field, then the lookup method described above will work.
O…