app/views/rooms/_new.html.erb
<div class="modal fade" id="new_room">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title">Create a New Room</h4>
</div>
<div class="modal-body">
<%= render 'form', room: @room %>
</div>
</div>
</div>
</div>