app/views/layouts/application.html.erb
<!DOCTYPE html>
<html>
<head>
<title>Vehicles</title>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<%= stylesheet_link_tag "https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" %>
<%= stylesheet_link_tag 'https://fonts.googleapis.com/css?family=Lobster|Roboto' %>
<%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => true %>
<%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
<%= javascript_include_tag "https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js" %>
<%= csrf_meta_tags %>
</head>
<body>
<% if user_signed_in? %>
<nav class="navbar navbar-default navbar-fixed-top">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<%= link_to "CarBuy.com", root_path, class: "navbar-brand" %>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="#">Link <span class="sr-only">(current)</span></a></li>
<li><a href="#">Link</a></li>
</ul>
<form class="navbar-form navbar-left">
<div class="form-group">
<input type="text" class="form-control" placeholder="Search">
</div>
<button type="submit" class="btn btn-default">Submit</button>
</form>
<ul class="nav navbar-nav navbar-right">
<li><%= link_to "Edit Profile", edit_user_registration_path %></li>
<li><%= link_to "Sign Out", destroy_user_session_path, method: :delete %></li>
<% end %>
<!-- <li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</li> -->
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>
<div class="container">
<%= yield %>
</div>
</body>
</html>