sign-up.erb

<header class="clearfix">
  <h2>Sign Up</h2>
</header>
<hr/>

<form class="form-horizontal" role="form" method="POST">
  <div class="form-group">
    <label class="col-sm-2 control-label">Name</label>

    <div class="col-sm-10">
      <input name="name" class="form-control" type="text" required maxlength="255" value="<%= @previous[:name] %>" placeholder="Your full name"/>
    </div>
  </div>

  <div class="form-group">
    <label class="col-sm-2 control-label">Email</label>

    <div class="col-sm-10">
      <input name="email" class="form-control" type="email" required maxlength="255" value="<%= @previous[:email] %>" placeholder="Your email address"/>
    </div>
  </div>

  <div class="form-group">
    <label class="col-sm-2 control-label">Password</label>

    <div class="col-sm-10">
      <input name="password" class="form-control" type="password" required placeholder="Your password, minimum 8 characters"/>
    </div>
  </div>

  <div class="form-group">
    <div class="col-sm-offset-2 col-sm-10">
      <input type="submit" class="btn btn-success" value="Sign Up"/>
    </div>
  </div>
</form>