Thinking sphinx 思考Sphinx-如何在可能为零的关联模型中索引值？_Thinking Sphinx

Thinking sphinx 思考Sphinx-如何在可能为零的关联模型中索引值？

Thinking sphinx 思考Sphinx-如何在可能为零的关联模型中索引值？,thinking-sphinx,Thinking Sphinx,我正在尝试在我的类别模型上定义以下索引： define_index do has document.author.name :as => :author_name, :facet => true end 我的模型定义如下： class Category < ActiveRecord::Base has_many: documents end class Author ActiveRecord::Base has_many :documents end clas

我正在尝试在我的类别模型上定义以下索引：

define_index do
  has document.author.name :as => :author_name, :facet => true
end

我的模型定义如下：

class Category < ActiveRecord::Base
  has_many: documents
end

class Author ActiveRecord::Base
  has_many :documents
end

class Document ActiveRecord::Base
  belongs_to :category
  belongs_to :author
end

有人碰到过这个问题吗

define_index do
  # firstly, you must have at least one indexed column
  indexes document.author.name :as => :author_name, :facet => true

  # to add 'has' for string you crc32
  # has "CRC32(string_col)", :as => :filtered_string_col
end

如果您需要搜索“has”列：

:conditions => { "string to filter on".to_crc32 }

:conditions => { "string to filter on".to_crc32 }