<% content_for :header do %>
<%= leaf_nav_tag(leaf) do %>
<%= link_to_previous_leafable(leaf) %>
<%= render "books/index_link" %>
▸
<%= link_to book.title, book_slug_path(book) %>
▸
<%= leaf.leafable.title %>
<% end %>
<% end %>
<% content_for :toolbar do %>
<% if book.editable? %>
<%= editing_mode_toggle_switch(@leaf, checked: false) %>
<% end %>
<% end %>