insert_record

# File activerecord/lib/active_record/associations/has_many_through_association.rb, line 61
        def insert_record(record, force = true, validate = true)
          if record.new_record?
            if force
              record.save!
            else
              return false unless record.save(:validate => validate)
            end
          end

          through_association = @owner.send(@reflection.through_reflection.name)
          through_record = through_association.create!(construct_join_attributes(record))
          through_association.proxy_target << through_record
        end