class Admin::NameserversController < ApplicationController def new @domain = Domain.find_by(params[:id]) @nameserver = @domain.nameservers.build end def create @domain = Domain.find(params[:domain_id]) if @domain.nameservers.create(nameserver_params) redirect_to [:admin, @domain] else render 'new' end end private def nameserver_params params.require(:nameserver).permit(:hostname, :ipv4, :ipv6) end end