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morenoh149/users_controller.rb

Created December 17, 2013 22:50
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fix n+1 query. User has many posts. I want to get 3 random posts from every user.
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users_controller.rb
def index
users = User.includes(:posts)
users.each do |u|
puts u.posts.limit(3)
end
@comment = Comment.new
end
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