Faceting on Array Field in Elasticsearch with @elastic/react-search-ui
I have an engine with documents containing a countries array:
countries: ['Spain', 'Italy']
countries: ['Spain']
countries: ['Spain', 'Germany']
I would like to know how I can include a facet, so when I select 'Spain', it returns all 3 documents that contain 'Spain' in the array.
I am using the @elastic/react-search-ui library.
Currently, if I select 'Spain', it only returns the document that has exactly 'Spain'. The documents that contain 'Spain' along with other values are not returned.
I was wondering if this is expected behavior, or if it's possible to return documents where 'Spain' is part of an array, even if there are other values in that array.