在elasticsearch中設置關鍵字字段

Question

我將Rails從4升級到5.2，並且還將彈性搜索從2.4更新到6.8。

以下是我得到的錯誤。

[400] {"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"Fielddata is disabled on text fields by default. Set fielddata=true on [activity_type] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead."}]

這就是請求*的樣子：

activity_types=>{:terms=>{:field=>"activity_type"}}

看一下activity_search.rb：

class ActivitySearch < Search::Model
  include DateSearch
  apply_date_filters
  apply_date_aggregations

  filters :activity_types, type: :terms, field: :activity_type, aggregate: false

  aggregates :activity_types, :subject_ids, :levels

  ....

看一下model.rb：

module Search
  class Model
    def add_aggregation(name, opts={})
      self._aggregations = _aggregations.deep_merge({name.to_sym => opts})
      return if method_defined? "aggregate_#{name}" 
      define_method "aggregate_#{name}" do |config={}|
      type = config.delete(:type){ :terms }
      field = config.delete(:field){ name.to_s.singularize }
      Search::Aggregation.new(type, field, opts)
    end

    def response
      @response ||= Search::Response.new(search.response)
    end

    def request
      @request ||= build_request
    end

    def search
      @search ||= run_search
    end

    private

    def run_search
      search_class.search(request.params)
    end

    def search_class
      self.class.name.demodulize.gsub('Search', '').safe_constantize
    end

    def build_request
      request = Search::Request.new
      request.query(*queries)
      request.filter(*filters)
      request.aggregate(aggregations)
      request.sort(*sorts)
      request
    end
  end

activity_search_facade.rb：

class Companies::ActivitySearchFacade < SimpleDelegator
  delegate :aggregations, to: :response
end

有人可以幫助解決這個錯誤嗎？

請注意， elasticsearch-rails gem版本是6.0.0。

如果您需要更多代碼，請告訴我們。

*如何更改此請求以使其在版本6中正確運行？

UPDATE

根據我得到的錯誤，它可能是這個嗎？

curl -X GET 'localhost:9200/development_activities'

  "activity_type":{"type":"text" }

如何更改此type: "keyword" ？ ^

Answer 1

請檢查您的elasticsearch版本，因為elasticsearch-rails gem版本遵循elasticsearch版本號，當您更新elasticsearch-rails它可能不適用於早期的彈性搜索版本。

檢查一下

Answer 2

所以活動模型看起來像：

class Activity < ApplicationRecord
  include SearchCommon

這就是search_common.rb的樣子：

module SearchCommon
  extend ActiveSupport::Concern

  included do
    include Elasticsearch::Model

    after_commit on: [:create, :update] do
      __elasticsearch__.index_document
    end

    after_commit on: [:destroy] do
      __elasticsearch__.delete_document
    end

    index_name [Rails.env, model_name.collection].join('_')
  end
end

所以我剛補充說：

module SearchCommon
  extend ActiveSupport::Concern

  included do
    include Elasticsearch::Model

    after_commit on: [:create, :update] do
      __elasticsearch__.index_document
    end

    after_commit on: [:destroy] do
      __elasticsearch__.delete_document
    end

    mapping do # ADDITION 
     indexes :activity_type, type: 'keyword' # ADDITION
    end # ADDITION 

    index_name [Rails.env, model_name.collection].join('_')
  end
end