delete

# File activerecord/lib/active_record/associations/association_collection.rb, line 127
      def delete(*records)
        records = flatten_deeper(records)
        records.each { |record| raise_on_type_mismatch(record) }
        
        @owner.transaction do
          records.each { |record| callback(:before_remove, record) }
          
          old_records = records.reject {|r| r.new_record? }
          delete_records(old_records) if old_records.any?
          
          records.each do |record|
            @target.delete(record)
            callback(:after_remove, record)
          end
        end
      end