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Type:
Improvement
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Resolution: Won't Fix
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
Hi, Guys
I am working on a rails app using mongoid, and includes seems not working properly to me. I on a Mac Lion and ruby 1.9.2p0. The mongoid gem version is 2.4.1.
[update] I also have identity_map_enabled set to true in mongoid.yml
I have an Offer class that looks like this:
class Offer include Mongoid::Document include Mongoid::Timestamps has_many :messages end
and a Message class that looks like this:
class Message include Mongoid::Document include Mongoid::Timestamps belongs_to :offer end
And here is the output from rails console
ruby-1.9.2-p0 :010 > Offer.limit(10).includes(:messages).each {|o| o.messages.entries }
MONGODB [DEBUG] Cursor#close 8323320496372318445
MONGODB kass_development['offers'].find({}).limit(10)
MONGODB kass_development['system.namespaces'].find({})
MONGODB kass_development['messages'].find({"offer_id"=>{"$in"=>[BSON::ObjectId('4f28ea6dcf60210bf8000002'), BSON::ObjectId('4f28eaadcf60210bf8000003'), BSON::ObjectId('4f28eb14cf60210bf8000004'), BSON::ObjectId('4f2ee439cf60210168000006'), BSON::ObjectId('4f2ee65acf60210168000007'), BSON::ObjectId('4f2f3550cf60211f38000005'), BSON::ObjectId('4f36beebcf6021039c000003'), BSON::ObjectId('4f36bfd8cf6021039c000004'), BSON::ObjectId('4f36c025cf6021039c000006'), BSON::ObjectId('4f2983dacf60210167000005')]}}).sort([[:created_at, :asc]])
MONGODB kass_development['messages'].find({"offer_id"=>BSON::ObjectId('4f28ea6dcf60210bf8000002')}).sort([[:created_at, :asc]])
MONGODB kass_development['messages'].find({"offer_id"=>BSON::ObjectId('4f28eaadcf60210bf8000003')}).sort([[:created_at, :asc]])
MONGODB kass_development['messages'].find({"offer_id"=>BSON::ObjectId('4f28eb14cf60210bf8000004')}).sort([[:created_at, :asc]])
MONGODB kass_development['messages'].find({"offer_id"=>BSON::ObjectId('4f36beebcf6021039c000003')}).sort([[:created_at, :asc]])
MONGODB kass_development['messages'].find({"offer_id"=>BSON::ObjectId('4f36bfd8cf6021039c000004')}).sort([[:created_at, :asc]])
MONGODB kass_development['messages'].find({"offer_id"=>BSON::ObjectId('4f36c025cf6021039c000006')}).sort([[:created_at, :asc]])
MONGODB kass_development['messages'].find({"offer_id"=>BSON::ObjectId('4f2983dacf60210167000005')}).sort([[:created_at, :asc]])
=> #<Mongoid::Criteria
selector: {},
options: {:limit=>10},
class: Offer,
embedded: false>
Notice it still makes separate queries for the messages for some of the offers.
I googled for a while and could not find anything that helps.
Thanks for any help in advance.
Lin