在elasticsearch中设置关键字字段

Question

我将 Rails 从 4 升级到 5.2，并将 elasticsearch 从 2.4 更新到 6.8。

以下是我遇到的错误。

[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."}]

这是请求*的样子：

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

看看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

  ....

看看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

谁能帮忙解决这个错误？

请注意 elasticsearch-rails gem 版本为 6.0.0。

如果您需要更多代码，请告诉我。

* 如何更改此请求以使其在版本 6 中正确运行？

更新

是否可以根据我遇到的错误解决此问题？

curl -X GET 'localhost:9200/development_activities'

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

如何将其更改为 type: "keyword"？ ^

Answer 1

请检查您的 elasticsearch 版本，因为 elasticsearch-rails gem 版本遵循 elasticsearch 版本号，当您更新 elasticsearch-rails 时，它可能无法与较早的 elastic-search 兼容版本。

check here

Answer 2

所以 activity 模型看起来像：

class Activity < ApplicationRecord
  include SearchCommon

这就是 search_common.rb 的样子：

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

所以我刚刚添加：

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

在elasticsearch中设置关键字字段

Setting keyword field in elasticsearch

ruby-on-rails

ruby

elasticsearch

elasticsearch-rails