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kineticac/athletes_controller.rb

Created April 29, 2013 22:10
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Rails index_by to help order by the order of id arrays
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athletes_controller.rb
ids = [111, 22, 332, 34, 445]
athletes = Athlete.where(:id => ids).index_by(&:id)
unless athletes.empty?
athletes = ids.map{|id| athletes[id]}
athletes.compact!
end
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