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Pick a random element

/ Published in: Rails
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in your model, add a def
to pick a record where an option (in my case lenght) is equal to 1

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  1. def self.random
  2. 	    ids = connection.select_all("SELECT id FROM paragraphs WHERE length = 1")
  3. 	    find(ids[rand(ids.length)]["id"].to_i) unless ids.blank?
  4. 	end

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