lib/jekyll/zettel/zettelkasten.rb in jekyll-zettel-0.4.0 vs lib/jekyll/zettel/zettelkasten.rb in jekyll-zettel-0.4.1

@@ -11,18 +11,21 @@
       attr_reader :site
 
       def generate(site)
         @site = site
         @site.data['zettelkasten'] = {}
+        @site.data['tag2zettel'] = {}
 
         site.pages.each do |page|
           next unless SLUG_FORMAT.match?(page.path.to_s)
 
           register_zettel(page)
+          register_tags(page)
         end
 
         write_catalog 'zettelkasten'
+        write_catalog 'tag2zettel'
       end
 
       def register_zettel(doc)
         @site.data['zettelkasten'][doc.data['zettel']] = {
           'zettel' => doc.data['zettel'],
@@ -34,8 +37,17 @@
           'via' => doc.data['via'],
           'citekey' => doc.data['citekey']
         }
       end
 
+      def register_tags(doc)
+        return unless doc.data.key?('tags')
+
+        doc.data['tags'].each { |tag|
+          @site.data['tag2zettel'][tag] = [] unless @site.data['tag2zettel'].key?(tag)
+
+          @site.data['tag2zettel'][tag] << doc.data['zettel']
+        }
+      end
     end
   end
 end