Convert 1200 to 1.2K in ruby/rails -

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i think there method within ruby or rails can't remember find or how search it, hoping stackoverflow's collective wisdom might help. don't mind writing method this, i'm sure has better solution.

number_to_human(1200, :format => '%n%u', :units => { :thousand => 'k' })  # 1200 => 1.2k

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