app/views/layouts/rails_admin/content.html.erb
<title>
<%= "#{@abstract_model.try(:pretty_name) || @page_name} | #{[_get_plugin_name[0] || 'Rails', _get_plugin_name[1] || 'Admin'].join(' ')}" %>
</title>
<header class="py-2 m-2 border-bottom" data-model="<%= @abstract_model.to_param %>">
<h1>
<%= @page_name %>
</h1>
</header>
<% flash && flash.each do |key, value| %>
<div class="<%= flash_alert_class(key) %> alert alert-dismissible">
<%= value %>
<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
</div>
<% end %>
<nav aria-label="breadcrumb">
<%= breadcrumb %>
</nav>
<ul class="nav nav-tabs mb-3">
<%= menu_for((@abstract_model ? (@object.try(:persisted?) ? :member : :collection) : :root), @abstract_model, @object) %>
<%= content_for :contextual_tabs %>
</ul>
<%= yield %>