Sunspot Solr：如何通过人气场提升答案

【问题标题】：Sunspot Solr: How to boost by popularity fieldSunspot Solr：如何通过人气场提升
【发布时间】：2016-04-14 20:30:30
【问题描述】：

我在 Solr 中添加了一个“人气”字段作为外部字段。

"./solr/configsets/sunspot/conf/schema.xml"

<schema name="sunspot" version="1.0">

  <!-- ... -->

  <types>
    <fieldType name="ext_popularity_field" keyField="id" defVal="1.0" class="solr.ExternalFileField"/>
  </types>
  <fields>
    <field name="popularity" type="ext_popularity_field" />
  </fields>

  <!-- ... -->

  <listener event="newSearcher"   class="org.apache.solr.schema.ExternalFileFieldReloader"/>
  <listener event="firstSearcher" class="org.apache.solr.schema.ExternalFileFieldReloader"/>
</schema>

我已经生成了 ./solr/development/data/external_popularity.txt 文件，我可以在 solr 仪表板上通过此查询查看这些分数：

http://localhost:8983/solr/development/select?q={!func}popularity&fl=id,score

<?xml version="1.0" encoding="ISO-8859-1"?>

<response>
   <lst name="responseHeader">
      <int name="status">0</int>
      <int name="QTime">21</int>
   </lst>
   <result name="response" numFound="7626" start="0" maxScore="21.75">
      <doc>
         <str name="id">Item 9788770781701</str>
         <float name="score">21.75</float>
      </doc>
      <doc>
         <str name="id">Item 9781449661373</str>
         <float name="score">19.0</float>
      </doc>
      <!-- ... -->
   </result>
</response>

所以现在的问题是，我如何在 Rails 项目中实际引用它？我有一个带有可搜索块的 Item 类：

class Item < ActiveRecord::Base
  searchable include: [:authors, :publisher, :order_temporary_stock] do
    text :ean
    text :full_title
    text :author_names
    text :publisher_name

    # ...
  end
end

...和一个典型的搜索：

Item.solr_search do
  fulltext self.q do
    phrase_fields full_title:    16.0 # pf: full_title_text^16.0
    phrase_slop 1

    boost_fields ean:            8.0  # qf: ean_text^8.0
    boost_fields author_names:   2.0  # qf: author_names_text^2.0
    boost_fields publisher_name: 2.0  # qf: publisher_name_text^2.0

    # boost(popularity) 
  end

end

【问题讨论】：

标签： ruby-on-rails solr sunspot

【解决方案1】：

通过在搜索参数中添加 :boost 解决了上述问题，如下所示：

Item.solr_search do
  fulltext self.q do
    phrase_fields full_title:    16.0 # pf: full_title_text^16.0
    phrase_slop 1

    boost_fields ean:            8.0  # qf: ean_text^8.0
    boost_fields author_names:   2.0  # qf: author_names_text^2.0
    boost_fields publisher_name: 2.0  # qf: publisher_name_text^2.0
  end

  adjust_solr_params do |params|
    params[:boost] = "popularity_score"
  end
end

结束

【讨论】：