app/views/requested_shifts/edit.html.erb
<h1>Editing your shift request</h1>
<%= form_for(@requested_shift) do |f| %>
<%= f.error_messages %>
<%= render partial: 'form', locals: {f: f} %>
<p>
<%= f.submit 'Update' %>
</p>
<% end %>
<%= link_to 'Show', template_requested_shift_path(@week_template, @requested_shift) %> |
<%= link_to 'Back', template_path(@week_template) %>