mongodb - Mongoid/mongodb 索引

Question

我正在使用 mongodb/mongoid 实现一个 ruby​​ on rails 应用程序，我对更好的索引/搜索结构有点困惑。我staff在模型中有一个字段，工作人员可以是任何一种类型 - 生产、经纪人、办公室。每个员工都是一个Person。每种类型可以有多个员工。

所以我有两种方法：

1）。制作staff as an array和储存它

[{:key => 'broker', :name => "Broker Name", :person_id => "654978"},
{:key => 'office', :name => "Office Staff 1", :person_id => "564654"},
{:key => 'office', :name => 'another office', :person_id => '79878'}]

2）。Make 是 aHash并且 store 是 as
{:brokers => [{:person_id => 2134, :name => 'Broker 1'}],
:office =>> [{:person_id => 2131, :name => 'Office 1'}, {:person_id => 1231, :name => 'Office 2'}]}

我想为这些文档编制索引，并且应该能够搜索诸如 office = '465456' 之类的文档。

Answer 1

如果将其存储为哈希，则需要多个索引。因为您必须为散列中的每个键索引办公室名称。如果将其存储为数组，则只需要 1 个索引。

Answer 2

看起来您真的想存储多个索引；@bjartek 是对的，您需要将这些存储为数组：

class Office
  include Mongoid::Document
  embeds_many :people, as: :staff

  # unsure for polymorphic embeds; perhaps this needs 'staff.name'
  index "people.name"
  index "people.person_id"
  index "people.key"
end

http://mongoid.org/docs/indexing.html