<nav class="navbar navbar-expand-lg navbar-dark bg-primary">
  <a class="navbar-brand" href="#">Asignar Ubicación</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" 
          data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" 
          aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
    <ul class="navbar-nav mr-auto">
      <li class="nav-item active">
        <a class="nav-link" href="/geo">GeoServices <span class="sr-only"></span></a>
      </li>
      {{#if user}}
      <li class="nav-item">
        <a class="nav-link" href="maps/">TrackerTruck <span class="sr-only">(current)</span></a>
      </li>
      {{/if}}
    </ul>
    <ul class="navbar-nav ml-auto">
      {{#if user}}
       <li class="nav-item">
        <a class="nav-link" href="/users/logout">Logout</a>
       </li>
      {{else}}
       <li class="nav-item">
        <a class="nav-link" href="/users/signin">Login</a>
       </li>
       <li class="nav-item">
        <a class="nav-link" href="/users/signup">Register</a>
       </li>
      {{/if}}
    </ul>
  </div>
</nav>