General functionality "yearly archive"

lib/articlearchive.rb

@@ -2,22 +2,5 @@ require 'ostruct'
 
 def generate_archive_pages()
   articles = items.select { |i| i[:kind] == 'article' }
-  yearmap = articles.group_by { |item| item[:created_at].year }
+  generate_yearly_archive(articles, '/archives/articles', 'Blogarchiv')
-  yearmap.keys.each { |year|
-    # Simplified assumption: At least one blog post each year
-    linkprev = if (year>yearmap.keys.min)
-      ", :linkprev => OpenStruct.new(:title => #{year-1}, :link => '/archives/articles/#{year-1}/')"
-    else
-      ""
-    end
-    linknext = if (year<yearmap.keys.max)
-      ", :linknext => OpenStruct.new(:title => #{year+1}, :link => '/archives/articles/#{year+1}/')"
-    else
-      ""
-    end
-    @items << Nanoc::Item.new(
-      "<%= render 'article_archive', :year => #{year} #{linkprev} #{linknext} %>",
-      { :title => "Blogarchiv #{year}", :kind => "fullpage" },
-      "/archives/articles/#{year}/")
-  }
 end

lib/yearlyarchive.rb

@@ -0,0 +1,22 @@
+require 'ostruct'
+
+def generate_yearly_archive(articles, basepath, title, templatename = 'article_archive')
+  yearmap = articles.group_by { |item| item[:created_at].year }
+  yearmap.keys.each { |year|
+    # Simplified assumption: At least one blog post each year
+    linkprev = if (year>yearmap.keys.min)
+      ", :linkprev => OpenStruct.new(:title => #{year-1}, :link => '#{basepath}/#{year-1}/')"
+    else
+      ""
+    end
+    linknext = if (year<yearmap.keys.max)
+      ", :linknext => OpenStruct.new(:title => #{year+1}, :link => '#{basepath}/#{year+1}/')"
+    else
+      ""
+    end
+    @items << Nanoc::Item.new(
+      "<%= render '#{templatename}', :year => #{year} #{linkprev} #{linknext} %>",
+      { :title => "#{title} #{year}", :kind => "fullpage" },
+      "#{basepath}/#{year}/")
+  }
+end