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mongo stuff

View mongo_test.rb
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require 'mongoid'
 
Mongoid.configure do |config|
config.master = Mongo::Connection.new.db("so_test")
end
 
class Client
include Mongoid::Document
belongs_to :contact
field :name, type: String
end
 
class Contact
include Mongoid::Document
has_many :clients
field :name, type: String
end
 
Contact.create(:name => "Bill")
jill = Contact.create(:name => "Jill")
jill.clients.create(:name => "Steve")
 
p "Has Clients"
Contact.any_in(_id: Client.all.distinct("contact_id")).each do |c|
p c
end
p "No Clients"
Contact.not_in(_id: Client.all.distinct("contact_id")).each do |c|
p c
end

Is it a good way?

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