{{define "search_input"}}
<div class="input-group" style="margin-bottom: 20px">
  {{if .}}
  <span class="input-group-addon" id="search-query"><span class="glyphicon glyphicon-search"></span></span>
  <input type="text" id="myInput" class="form-control" aria-describedby="search-query">
  {{else}}
  <p>Non è stato inserito ancora nessun elemento.</p>
  {{end}}
</div>
{{end}}