gistfile1.rb

# use me to deliver emails plz kthx
class Notifier
  
  class Job
    
    VALID_ARGUMENT_TYPES = [ String, Integer, Symbol, ActiveRecord::Base ]
    
    cattr_accessor :ar_prefix
    @@ar_prefix = "%OMGSERIALIZEDAR%"
    
    def self.perform(name, args)
      NotifierMailer.send(name, *deserialize(args)).deliver!
    end
    
    def self.serialize(args)
      args.map do |a|
        
        unless VALID_ARGUMENT_TYPES.any? { |t| a.is_a?(t) }
          raise ArgumentError, "Invalid argument type #{a.class}. #{a}"
        end
        
        if a.is_a?(ActiveRecord::Base)
          "#{ar_prefix}:#{a.class}:#{a.id}"
        else
          a
        end
      end
    end
    
    def self.deserialize(args)
      args.map do |a|
        if a.is_a?(String) && a.starts_with?(ar_prefix)
          junk, klass, id = a.split(":") 
          
          klass.constantize.find(id)
        else
          a
        end
      end
    end
    
  end
  
  cattr_accessor :perform_delayed
  @@perform_delayed = false
  
  class << self
  
    def method_missing(name, *args)
      
      args = Job.serialize(args)
      
      if perform_delayed
        Resque.enqueue(Job, name, args)
      else
        Job.perform(name, args)
      end
    end
    
  end
  
end