<% @site.domain_name.split(' ').each_with_index do |domain_name,i| %>
<%= text_field_tag nil,domain_name,:class=>'domain_name',onchange: 'domain_name_change()',:oninput=>'replace_domain_input(this)' %>
<% if i != 0 %>
<% end %>
<% end %>
<%= button_tag 'add domain',:type => 'button', :id => 'add_root_domain',class: 'btn btn-info',:style => 'margin-top: 1em;' %>
<%= hidden_field_tag 'site_construct[domain_name]',@site.domain_name,id: 'site_construct_domain_name' %>