Elasticsearch + Tire +附件-映射器+回形针=无命中

Question

我正在尝试在我的应用程序中使用ElasticSearch + Tire进行全文搜索。

目前，我有一个模型Entry，通过回形针has_attached_file。我已经安装并运行了最新版本的ElasticSearch/Tire，还安装了附件映射插件。

如果我的查询针对的是可以在其他Entry字段中找到的任何内容，那么它可以完美地工作。我试图运行rake environment tire:import CLASS="Entry"来更新索引，但是我得到了

** Invoke environment (first_time)
** Execute environment
** Invoke tire:import (first_time)
** Execute tire:import
[IMPORT] Starting import for the 'Entry' class
--------------------------------------------------------------------------------
7/7 | 100% rake aborted!##############################################
stack level too deep
/home/capuser/.rvm/gems/ruby-1.9.2-p320/gems/rake-0.9.2.2/lib/rake/task.rb:162
Tasks: TOP => tire:import

我感觉问题出在文件的编码或我的to_indexed_json函数中。

下面是一些代码：

class Entry < ActiveRecord::Base
  include Tire::Model::Search
  include Tire::Model::Callbacks

  has_attached_file :document,
                :url  => "/assets/entries/:id/:basename.:extension",
                :path => ":rails_root/public/assets/entries/:id/:basename.:extension"

  before_post_process :image?

  validates_presence_of :entry_type

  attr_accessible :description, :title, :url, :category_ids, :subcategory_ids, :entry_type_id, :document

  mapping do
    indexes :title
    indexes :description
    indexes :categories do
      indexes :name
    end
    indexes :subcategories do
      indexes :name
    end
    indexes :entry_type
    indexes :document, :type => 'attachment'
  end

 def to_indexed_json  
    {
    :title          => title,
    :description    => description,
    :categories     => categories.map { |c| { :name => c.name}},
    :subcategories  => subcategories.map { |s| { :name => s.name}},
    :entry_type     => entry_type_name,
    :document       => attachment
    }.to_json
  end


  def self.search(params)
    tire.search(load: true) do
      query { string params[:query], default_operator: "AND" } if params[:query].present?
    end
  end

  def attachment
    if document.present?
      path_to_document = "#{RAILS_ROOT}/app/assets/#{document}"
      Base64.encode64(open(path_to_document) { |pdf| pdf.read})
    end
  end
end

Answer 1

我犯了几个愚蠢的打字错误，把事情搞砸了。我一定读过一篇文章，他们用不同的格式编写了to_indexed_json函数，我搞糊涂了。我在写出问题之前就解决了这个问题，所以这就是我之前的问题。

 def to_indexed_json  
    {
    :title          => title,
    :description    => description,
    :categories     => categories.map { |c| { :name => c.name}},
    :subcategories  => subcategories.map { |s| { :name => s.name}},
    :entry_type     => entry_type_name,
    :methods        => [:attachment]
    }.to_json
  end

Answer 2

你的方法散列在json中，如果你想让方法真正命中，就应该在json之外。如下所示：

def to_indexed_json  
  only: {
    :title          => title,
    :description    => description,
    :categories     => categories.map { |c| { :name => c.name}},
    :subcategories  => subcategories.map { |s| { :name => s.name}},
    :entry_type     => entry_type_name
  },
  methods: [:attachment]
end