php - Elasticsearch 按值优先排序

Question

我想在发布日期 对结果进行排序。我想要 2015 电影放在第一位，其余年份按 has_poster 值排序。所以我得到如下结果:

2015, 2015, 1989, 2017, 2006

等等

到目前为止，这就是我所拥有的。

$params['index'] = 'movies';
$params['type']  = 'movie';
$params['body']['size'] = 50;
$params['body']['sort'] = array(
    array('has_poster'  => "desc"),
    array('_score'  => "desc"),
);        
$params['body']['query']['filtered'] = array(
    'query' => array(
        'query_string' => array(
            'query' => "survivor",
            'fields' => array('name', 'orig_title'),
            'default_operator' => "AND"
        ),
    )
);

我需要在 MySQL for Elasticsearch 中等效于 ... ORDER BY FIELD(releasedate, 2015), has_poster DESC ...。

Answer 1

您需要脚本化排序:

{
  "sort": [
    {
      "_script": {
        "script": "if(doc['releasedate'].date.year==2015) return 1; else return 0;",
        "type": "number",
        "order": "desc"
      }
    },
    {
      "has_poster": "desc"
    }
  ]
}