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mrzasa/devices.rb

Last active October 13, 2016 14:50
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ActiveRecord::AssociationRelation vs ActiveRecord::Associations::CollectionProxy
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devices.rb
> user.devices.all.uniq.class
=> Device::ActiveRecord_AssociationRelation
# so that we can chain more AR methods
> user.devices.all.uniq.limit(1)
=> [Device]
> u.devices.uniq.class
=> Array
# so we can only work on array:
> user.devices.uniq.limit(1)
NoMethodError: undefined method `limit' for []:Array
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