Search API Field Map
Use entity tokens to map field values to index fields.
I used this module to format a date field as a year to use as the index value.
Use entity tokens to map field values to index fields.
I used this module to format a date field as a year to use as the index value.
Collect and share bookmarks.
Search API can index relationships. To use them, add the relationship and select the field under the Content Relationship category.