lib/templates/erb/scaffold/edit.html.erb.tt
<nav aria-label="breadcrumb">
<ol class="breadcrumb">
<li class="breadcrumb-item"><%%= link_to "<%= plural_table_name.capitalize %>", <%= index_helper %>_path %></li>
<li class="breadcrumb-item"><%%= link_to @<%= singular_table_name %>.id, @<%= singular_table_name %> %></li>
<li class="breadcrumb-item active" aria-current="page">Edit</li>
</ol>
</nav>
<%%= render 'form', <%= singular_table_name %>: @<%= singular_table_name %> %>