sorting - 轮胎/Elasticsearch:排序无效

Question

我正在使用tire gem从我的Rails应用程序访问 Elasticsearch 。我的代码生成以下查询，据我所知docs for sort是正确的:

[2013-08-09 15:06:08,538][DEBUG][action.search.type       ] [Nitro] [tweets][3], node[INKC2ryGQ4Sx1qYP4qC-Og], [P], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@54daad1d]
org.elasticsearch.search.SearchParseException: [tweets][3]: query[ConstantScore(*:*)],from[-1],size[-1]: Parse Failure [Failed to parse source [{
  "query": {
    "match_all": {

    }
  },
  "sort": [
    {
      "author": "asc"
    }
  ],
  "filter": {
    "terms": {
      "entities_ids": [
        "10"
      ]
    }
  },
  "size": 10,
  "from": 0
}]]

生成它的方法如下所示:

  def Tweet.search_tweets(params = {})
Tweet.search(page: params[:page], per_page: params[:per_page]) do

  if params[:query_string].present? || params[:sentiment].present? ||
    (params[:start_date].present? && params[:end_date].present?)
    query do
      boolean do
        if params[:query_string].present?
          must { string params[:query_string], default_operator: "AND" }
        end

        if params[:sentiment].present?
          must { term :sentiment, params[:sentiment]}
        end

        if params[:start_date].present? && params[:end_date].present?
          must { string "created_at:[#{params[:start_date]} TO #{params[:end_date]}]"}
        end
      end
    end
  else
    query do
      all
    end
  end

  if params[:entity_id].present?
    filter :terms, entities_ids: [params[:entity_id]]
  end

  if params[:sort].present?
    sort { by params[:sort][:by], params[:sort][:order] }
  end

end

结束

我完全不知道为什么这行不通。

Answer 1

我在排序时遇到类似的问题...取决于您如何对该字段建立索引。如果它是一个标记字符串，您可能会遇到困难。相反，您可以使用多字段而不分析它，或者可以使用基于_source的_script排序:

{   "query": {
    "query_string": {
      "query": "something or other"
    }   },   "sort": {
    "_script": {
      "script": "_source.contentLegend",
      "type": "string",
      "order": "desc"
    }   } }

希望那有所帮助!