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Type:
Task
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Resolution: Done
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Affects Version/s: None
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Component/s: None
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None
class Person include Mongoid::Document has_one :house field :name, :type => String end class House include Mongoid::Document belongs_to :person end Person.delete_all() House.delete_all() Mongoid::IdentityMap.clear p = Person.create # => #<Person _id: 512d432edd365a75f4000001, name: nil> Mongoid::IdentityMap.clear Person.find(p.id).update(:name => "Jon") # => true p = Person.find(p.id) # => #<Person _id: 512d432edd365a75f4000001, name: nil> p.reload.name # => nil
Here are the Moped logs, you can see that it makes a call to houses. I tested with other has_ones, and it seems like it queries all of them on the update.
[ 6:20:24.204225000] MOPED: 127.0.0.1:27017 QUERY database=development collection=people selector={"_id"=>"512d432edd365a75f4000001"} flags=[:slave_ok] limit=0 skip=0 batch_size=nil fields=nil (0.4830ms)
[ 6:20:24.206950000] MOPED: 127.0.0.1:27017 QUERY database=development collection=houses selector={"$query"=>{"person_id"=>"512d432edd365a75f4000001"}, "$orderby"=>{:_id=>1}} flags=[:slave_ok] limit=-1 skip=0 batch_size=nil fields=nil (0.8159ms)
Using Mongoid 3.1.1