%= form_with(model: [:admin, course]) do |form| %>
<% if course.errors.any? %>
<%= pluralize(course.errors.count, "error") %> prohibited this admin_course from being saved:
<% course.errors.full_messages.each do |message| %>
- <%= message %>
<% end %>
<% end %>
<%= form.submit 'Zapisz', class: 'btn btn-primary' %>
<% end %>