I am using search api with the solr backend to index thousands of nodes. All of them have votes (vote api). Now I am wondering how to boost the relevance of these notes by their vote. I don't want to sort the result completely by votes (this would be easy), but that the votes boost the node's relevance for a certain percentage. Is that possible? How to do this?

1 Answer 1


Do you have the voting api results in your apache solr index? If you do and they are stored under a name ss_votingapi, here is what you need to do:

 * Implements hook_apachesolr_query_alter().
function MYMODULE_apachesolr_query_alter($query) {
  $query->addParam('fl', 'ss_votingapi');
  $query->addParam('bf', "recip(rord(ss_votingapi),1, 1000, 1000)");

More here, here and here

  • My problem is, that I do not use Apachesolr module but Search API with Solr extension. Does anybody know what would be the equivalent of $query->addParam for Search API? Can't find it.
    – user5950
    Feb 17, 2013 at 17:28

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