method_missing

# File activerecord/lib/active_record/relation/delegation.rb, line 34
    def method_missing(method, *args, &block)
      if @klass.respond_to?(method)
        ::ActiveRecord::Delegation.delegate_to_scoped_klass(method)
        scoping { @klass.send(method, *args, &block) }
      elsif Array.method_defined?(method)
        ::ActiveRecord::Delegation.delegate method, :to => :to_a
        to_a.send(method, *args, &block)
      elsif arel.respond_to?(method)
        ::ActiveRecord::Delegation.delegate method, :to => :arel
        arel.send(method, *args, &block)
      else
        super
      end
    end