如何使用Go Olivere/Elastic基于多个字段进行排序 [英] How to sort based on multiple fields with Go olivere/elastic

问题描述

我已经尝试了几天，想知道如何使用Go olivere/弹性 .我正在尝试将其翻译成Go

I've been trying for days to know how to sort based on multiple fields with Go olivere/elastic. I'm trying to translate this into Go

{
    "sort" : [
        "name",
        { "age" : "desc" },
    ],
}

我尝试使用 NewFieldSort()并在Search Service中提供一些 SortBy().它可以与一个 SortBy()一起正常工作，但不能与两个 SortBy()一起工作.它返回错误400(错误请求):所有分片均失败[type = search_phase_execution_exception]

I've tried to use the NewFieldSort() and give some SortBy() in the Search Service. It works fine with one SortBy() but won't work with two SortBy(). It returns Error 400 (Bad Request): all shards failed [type=search_phase_execution_exception]

这是我的代码

    sortQuery1 := elastic.NewFieldSort("name")
    sortQuery2 := elastic.NewFieldSort("age").Desc()

    searchService := esclient.Search().
        Index("students").
        SortBy(sortQuery1).
        SortBy(sortQuery2)

    searchResult, err := searchService.Do(ctx)

你们对尝试什么有任何建议吗?预先感谢！

Do you guys have any suggestions on what to try? Thanks in advance!

推荐答案

从示例中可以看到，您在示例中使用的 SortBy 函数是可变参数，如下所示: SortBy(sorter ... Sorter)* SearchService .

因此，您只需使用两个过滤条件就可以调用它一次:

So you only need to call it once with both your filter conditions:

    sortQuery1 := elastic.NewFieldSort("name")
    sortQuery2 := elastic.NewFieldSort("age").Desc()

    searchService := client.Search().
        Index("students").
        SortBy(sortQuery1, sortQuery2)

此请求正文一旦编组为JSON，将如下所示:

Once this request body is marshalled to JSON, it will look like the following:

{
    "sort": [
        { "name": { "order": "asc" } },
        { "age": { "order": "desc" } }
    ]
}

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