Thinking Sphinx 索引器条件

Question

我的模型：

class Item < ActiveRecord::Base
    belongs_to :group
    scope :able, ->{joins(:group).where(:groups => {:disabled => [nil,false]}).order("position")}
end

class Group < ActiveRecord::Base
    has_many :items
    scope :able, ->{ where(disabled: [false,nil]).order('position') }
end

我的 item_index.rb

ThinkingSphinx::Index.define :item, :with => :active_record do
  indexes title
  # attributes
  has created_at, updated_at, group_id, position
end

我如何仅索引 group.disabled 为 false 或 nil 的项目。

示例：

ThinkingSphinx::Index.define :item, :with => :active_record do
  where "id = 1"
  indexes title
  # attributes
  has created_at, updated_at, group_id, position
end

这将只索引 id = 1 的项目

Answer 1

在您的索引定义中：

# force join on groups table:
join group

# PostgreSQL
where "disabled = 'f' OR disabled IS NULL"

# MySQL
where "disabled = 0 OR disabled IS NULL"

我强烈建议为您禁用的列设置默认值 true 或 false，从而避免空值。