Today I wanted to add a computed field to my facet to make a faceted search using that field but when checking the facets page that field wasn't in the allowed field to make facets. When i realized none of my computed fields was in that list i came to the conclusion that you can't use computed fields as facets.
Looking on google didn't help me confirm my dobuts, there's actually no result that talks about solr facets and computed fields so i decided to ask here:
Can you use computed fields to make facets? If yes, is there something i have ti do (install a module, change a setting...) to enable this since at the moment i can't see them from the available facets?