ruby-on-rails – ElasticSearch评分(轮胎宝石)

2023年3月17日 186次阅读

我希望ElasticSearch(特定的Tire gem)根据关键字在字段中出现的次数返回结果.例如,我在名为Article的模型中索引字段标题.我有两个对象,第一个对象的标题值为“Funny Funny subject”,而第二个对象的标题值为“Funny subject”.我想以这样的方式索引,如果我搜索关键字’Funny’,第一个对象将首先返回,因为它在标题中出现了两个’Funny’字样.是否可以通过轮胎来做到这一点？什么是索引方法？ 最佳答案 这里是一个工作示例,这里的关键因素是boostvalue必须足够高并且您不能在查询中使用Wildcharts.

require 'tire'
require 'yajl/json_gem'

articles = [
  { :id => '0', :type => 'article', :title => 'nothing funny'},
  { :id => '1', :type => 'article', :title => 'funny'},
  { :id => '2', :type => 'article', :title => 'funny funny funny'}
]

Tire.index 'articles' do
  import articles
end

Tire.index 'articles' do
  delete

  create :mappings => {
    :article => {
      :properties => {
        :id       => { :type => 'string', :index => 'not_analyzed', :include_in_all => false },
        :title    => { :type => 'string', :boost => 50.0,            :analyzer => 'snowball'  },
        :tags     => { :type => 'string', :analyzer => 'keyword'                             },
        :content  => { :type => 'string', :analyzer => 'snowball'                            }
      }
    }
  }

  import articles do |documents|
    documents.map { |document| document.update(:title => document[:title].downcase) }
  end

  refresh
end

s = Tire.search('articles') do
  query do
    string "title:funny"
  end
end

s.results.each do |document|
  puts "* id:#{ document.id } #{ document.title } score: #{document._score}"
end

给

* id:2 funny funny funny score: 14.881571
* id:1 funny score: 14.728935
* id:0 nothing funny score: 9.81929
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