app/views/events/_ticket_purchase_modal.html.erb
<div class="modal" id="purchase_ticket_modal">
<div class="modal-content row">
Buy tickets
<%= form_for @booking, url: event_bookings_path(@event) do |f| %>
<%#= f.text_field :ticket_type %>
<%= f.fields_for :user_tickets do |attendee| %>
<%= render "user_ticket_fields", f: attendee %>
<% end %>
<div class="col l4 m4">
<button id="Submit" class="btn waves-effect waves-light" type="submit" name="action">Submit
<i class="material-icons right">send</i>
</button>
</div>
<% end %>
</div>
</div>