app/views/admin/users/edit.html.erb
<h3>Edit <%= @user.name %> </h3>
<%= link_to "Show #{@user.name}", admin_user_path(@user), class: 'tiny success button' %>
<%= form_for @user, url: admin_user_path(@user) do |form| %>
<%= render partial: '/admin/users/form', locals: { form: form } %>
<%= form.submit "Update", class: 'button' %>
<% end %>