An example of building ES query for raw user input.

es_raw_user_input_example.php

<?php        
if (!empty($filterParams['q'])) {
     $query = CMap::mergeArray($query, [
         [
             'bool' => [
                 'should' => [
                     ['match' => ['name' => ['query' => $filterParams['q'], 'boost' => 5]]],
                     ['match' => ['short_description' => ['query' => $filterParams['q'], 'boost' => 3]]],
                     ['match' => ['tag_names' => ['query' => $filterParams['q'], 'boost' => 1]]]
                 ]
             ]
         ]
     ]);
 }