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gistfile1.rb
Ruby
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class User < ActiveRecord::Base
serialize :preferences, Array
end
 
user = User.new
user.preferences # => nil
 
class User < ActiveRecord::Base
serialize :preferences, Array, :default => lambda { Array.new }
 
# this would be the same as :
# def after_initialize
# self.preferences ||= []
# end
end

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