如何在具有数组字段的弹性搜索中进行搜索？

Question

My indexed elastic search documents contains a field which is an array. For example featuers of a car.

{
"features": [ "Anti-Lock Brakes",
              "Alarm", 
              "Air Bag Driver",
              "Cruise Control", 
              "Satellite Navigation"'
}

How can I search for documents with which includes values from a given array. For example: I want to checkout cars which contain features such as 'Satellite navigation' and 'Cruise control'.

I tried the following but it is not working (php code)

public function index(Request $request, Client $search, SerializerInterface $serializer): JsonResponse
   ...

    $search_query = ["Satellite Navigation", "Cruise Control"]
  
    $filters = [];
    $filters[] = [
                   'terms' => [
                       'features' => $search_query,
                   ]
               ];

    $results = $search->search([
               'index' => 'cars',
               'body' => [
                   'from' => $offset,
                   'size' => self::PAGE_WINDOW,
                   'query' => [
                       "bool" => [
                           "must" => [
                               "match_all" => new \stdClass()
                           ],
                           "filter" => $filters
                       ]
                   ]
               ]
           ]);
...

I would like get a hint on how to set the $filters so that I get the desired results.

Answer 1

Since you do not have the mapping for features and you are adding index data, so a default mapping is generated.

Try this below search query, this will return all the documents that contain features such as 'Satellite navigation' and 'Cruise control'

Search Query:

{
  "query": {
    "bool": {
      "must": [
        {
          "match_phrase": {
            "features": "Satellite Navigation"
          }
        },
        {
          "match_phrase": {
            "features": "Cruise Control"
          }
        }
      ]
    }
  }
}

Search Result:

"hits": [
      {
        "_index": "my-index",
        "_type": "_doc",
        "_id": "1",
        "_score": 1.7178956,
        "_source": {
          "features": [
            "Anti-Lock Brakes",
            "Alarm",
            "Air Bag Driver",
            "Cruise Control",
            "Satellite Navigation"
          ]