lib/nanoc/helpers/breadcrumbs.rb in nanoc-4.4.2 vs lib/nanoc/helpers/breadcrumbs.rb in nanoc-4.4.3

@@ -1,31 +1,25 @@
 module Nanoc::Helpers
   # @see http://nanoc.ws/doc/reference/helpers/#breadcrumbs
   module Breadcrumbs
-    class CannotGetBreadcrumbsForNonLegacyItem < Nanoc::Int::Errors::Generic
-      def initialize(identifier)
-        super("You cannot build a breadcrumbs trail for an item that has a “full” identifier (#{identifier}). Doing so is only possible for items that have a legacy identifier.")
-      end
-    end
-
     # @return [Array]
     def breadcrumbs_trail
-      unless @item.identifier.legacy?
-        raise CannotGetBreadcrumbsForNonLegacyItem.new(@item.identifier)
-      end
+      # e.g. ['', '/foo', '/foo/bar']
+      components = item.identifier.components
+      prefixes = components.inject(['']) { |acc, elem| acc + [acc.last + '/' + elem] }
 
-      trail      = []
-      idx_start  = 0
-
-      loop do
-        idx = @item.identifier.to_s.index('/', idx_start)
-        break if idx.nil?
-
-        idx_start = idx + 1
-        identifier = @item.identifier.to_s[0..idx]
-        trail << @items[identifier]
+      if @item.identifier.legacy?
+        prefixes.map { |pr| @items[Nanoc::Identifier.new('/' + pr, type: :legacy)] }
+      else
+        prefixes
+          .reject { |pr| pr =~ /^\/index\./ }
+          .map do |pr|
+            if pr == ''
+              @items['/index.*']
+            else
+              @items[Nanoc::Identifier.new(pr).without_ext + '.*']
+            end
+          end
       end
-
-      trail
     end
   end
 end