问题
I have the following code in my index.html.erb
 <%= select_tag 'team_id', options_for_select(@teams.map{|team| ["#{team.name} #
  {team.nick}", team.id] }) %>
Where would I add a link_to helper within that block? Can I even add a link_to for select_tag?
The desired link_to would go to '/Teamleader/ID_OF_OPTION_PICKED'
UPDATE:
To be more clear; when a user selects an option from the select tag, I want to redirect the page to the desired link (from link_to).
回答1:
<%= select_tag 'team_id', options_from_collection_for_select(@teams, "id", "name") %>
<script>
    $(function(){
      $('#team_id').bind('change', function () {
         var url = "/Teamleader/" + $(this).val()
          if (url) {
              window.location.replace(url);
          }
          return false;
      });
    });
</script>
    回答2:
Try:
<%= select_tag 'team_id', options_from_collection_for_select(@teams, "id", "name"),:onchange => "window.location.replace('/Teamleader/'+this.value);" %>
    来源:https://stackoverflow.com/questions/14453136/how-to-add-a-link-to-in-a-select-tag-with-rails-erb