Question

我将在rails项目上使用弹性搜索我的ruby。当我在我的文章中搜索过多的单词时，我收到了这个错误。

NoMethodError (undefined method `highlight' for #<Elasticsearch::Model::Response::Result:0x007f062ed26708>)

我在日志制作中得到了这个。这就是我所做的一切：在控制器中：

      # POST /search/article
      def search
        render json: Article.search(params[:query]), each_serializer: ElasticsearchResultsSerializer
      end

这是我的article.rb模型

  #default_scope { order('created_at DESC') }
  scope :visible, -> { where(enabled: true) }

  after_commit on: [:create] do
    self.keywords = self.keywords.each {|str| str.force_encoding("UTF-8")}
    __elasticsearch__.index_document if self.enabled?
  end

  after_commit on: [:update] do
    self.keywords = self.keywords.each {|str| str.force_encoding("UTF-8")}
    __elasticsearch__.update_document if self.enabled?
  end

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

  settings index: { number_of_shards: 1, number_of_replicas: 0 }

  mappings dynamic: 'false' do
    indexes :content, type: "string", index_options: 'offsets'
    indexes :title, type: "string"
    indexes :description, type: "string"
    indexes :category, type: "string"
    indexes :created_at, type: "date"
    indexes :keywords, type: "string"
  end
  def self.search(query)
    __elasticsearch__.search(
      {
        query: {
          multi_match: {
            query: query,
            fields: ['title^10', 'content^5', 'description^2', 'keywords', 'category']
          }
        },
        highlight: {
          pre_tags: ['<em>'],
          post_tags: ['</em>'],
          fields: { title: {}, content: {} }
        }
      }
    )
  end

  def as_indexed_json(options={})
    as_json(
      only: [:content, :title, :id, :category, :keywords, :description]
    )
  end

我还使用了序列化器

class ElasticsearchResultsSerializer < ActiveModel::Serializer
  attributes :_id, :highlight, :_score, :_source

  def _source
    @article = object._index.singularize.capitalize.constantize.find(object._id)
    @serializer = "#{object._index.singularize.capitalize}Serializer".constantize
    @serializer.new(@article)
  end
end

Answer 1

可能是一个愚蠢的观察，但你是否试图改变价值

:highlight到:_highlight？

class ElasticsearchResultsSerializer < ActiveModel::Serializer
  attributes :_id, :_highlight, :_score, :_source

  def _source
    @article = object._index.singularize.capitalize.constantize.find(object._id)
    @serializer = "#{object._index.singularize.capitalize}Serializer".constantize
    @serializer.new(@article)
  end
end

Answer 2

我会尝试将字段切换为：

fields: {
  :"*" => {}
}

只是为了看看是否摆脱了错误。请参阅以下内容：https://github.com/elastic/elasticsearch-rails/issues/446

NoMethodError（未定义的方法`突出显示＆＃39;用于＃<elasticsearch :: model :: response :: result>

2 个答案: