使用elasticsearch为查询添加函数（filter？）得分

Question

我正在努力获得一个查询来处理elasticsearch，我将multi_match查询与字段提升， field_value_factors 组合在一起，然后是一个应该提升的函数任何与特定文档类型匹配的文档。

除了我在第二个查询中添加了以下错误的函数子句时，查询完美无缺：

您可以定义[functions]数组或单个函数，而不是两者。已找到[field_value_factor]，现在遇到[functions]

要清楚......

我的目标是使用下面的“功能”块将包含与“html”一词匹配的字段“doctype”的任何文档提升10倍

此作品

$param = json_encode(
        array(
            "query" => array(
                "function_score" => array(
                    "query" => array(
                        "multi_match" => array(
                            "query" => $query,
                            "fields" => array("title^5","body"),
                            "fuzziness" => 1
                        )
                    ),
                    "field_value_factor" => array(
                        "field" => "hits",
                        "modifier" => "log1p",
                        "factor" => 10
                    ),
                    "field_value_factor" => array(
                        "field" => "weight",
                        "modifier" => "log1p",
                        "factor" => 3
                    )
                )
            ),
            "size" => $offset,
            "from" => $start
        )
    );

将以下子句添加到第二个查询不起作用

"functions" => [array("filter" => array("term" => array("doctype" => "html")), "boost_factor" => 10)],
                    "max_boost" => 10,
                    "boost_mode" => "multiply"

**完整查询 - 这不起作用**

$param = json_encode(
        array(
            "query" => array(
                "function_score" => array(
                    "query" => array(
                        "multi_match" => array(
                            "query" => $query,
                            "fields" => array("title^5","body"),
                            "fuzziness" => 1
                        )
                    ),
                    "field_value_factor" => array(
                        "field" => "hits",
                        "modifier" => "log1p",
                        "factor" => 10
                    ),
                    "field_value_factor" => array(
                        "field" => "weight",
                        "modifier" => "log1p",
                        "factor" => 3
                    ),
                    "functions" => [
                        array("filter" => array("term" => array("doctype" => "html")), "boost_factor" => 10)
                    ],
                    "max_boost" => 10,
                    "boost_mode" => "multiply"
                )
            ),
            "size" => $offset,
            "from" => $start
        )
    );