app/views/shifts/users.html.erb
<div id = flash>
<% if flash[:error] %>
<p><%= flash[:error] %></p></br>
<% end %>
<% if flash[:notice] %>
<p><%= flash[:notice] %></p></br>
<% end %>
</div>
<h1><%= @event.event_name%></h1>
<% @shift_users.each do |e| %>
<li><%= e.username %>
<%= link_to('Remove', shift_removeUser_path(@event, @shift, e.id)) %> </li>
<% end %>
<br>
<%= link_to('Back to shift page', event_shift_path(@event, @shift)) %> <br>
<%= link_to('Event Page', event_path(@event)) %> <br>
<%= link_to('Home', root_path) %> <br>