gistfile1.rb

def Crop.interesting
 puts "WHAT'S IN THE CACHE NOW?"
 puts Rails.cache.read("interesting_crops").to_yaml
 json_crops = Rails.cache.fetch("interesting_crops", :expires_in => 1.day) do
   howmany = 12 # max number to find
   interesting_crops = Array.new
   Crop.randomized.each do |c|
     break if interesting_crops.length == howmany
     next unless c.interesting?
     interesting_crops.push(c)
   end
   puts "CROPS TO CACHE:"
   puts interesting_crops.to_yaml
   interesting_crops.to_json
 end
 return json_crops.collect{ |json_crop| Crop.new(json_crop) }
end