Paginate articles.

Rules

@@ -1,14 +1,8 @@
 #!/usr/bin/env ruby
 
-# A few helpful tips about the Rules file:
-#
-# * The order of rules is important: for each item, only the first matching
-#   rule is applied.
-#
-# * Item identifiers start and end with a slash (e.g. “/about/” for the file
-#   “content/about.html”). To select all children, grandchildren, … of an
-#   item, use the pattern “/about/*/”; “/about/*” will also select the parent,
-#   because “*” matches zero or more characters.
+preprocess do
+	paginate_articles
+end
 
 require 'compass'
 
@@ -23,15 +17,24 @@ compile '/' do
   layout 'home'
 end
 
+compile '/archives/*/' do
+	filter :haml
+	layout 'home'
+end
+
 compile '/articles/*' do
   filter :kramdown
-  layout 'home'
+  layout 'article'
 end
 
 route '/assets/style/*' do
   item.identifier.chop + '.css'
 end
 
+route '/articles/*' do
+	'/' + item.identifier.split('/')[-1] + '.html'
+end
+
 route '*' do
   item.identifier + 'index.html'
 end

config.yaml

@@ -1,6 +1,8 @@
 author_name:  Jez Cope
 author_uri:   http://erambler.co.uk/
 
+page_size:    10
+
 # A list of file extensions that nanoc will consider to be textual rather than
 # binary. If an item with an extension not in this list is found,  the file
 # will be considered as binary.

content/index.haml

@@ -1,8 +1,4 @@
 ---
 title: Home
 ---
-- sorted_articles.each do |article|
-  %article
-    %h2= link_to article[:title], article
-    .post-date= date_for(article).strftime '%A %e %B, %Y'
-    .post-content= article.compiled_content
+= render 'partials/article_index', :page => 0

layouts/article.haml

@@ -0,0 +1,17 @@
+!!!
+%html{ :lang => 'en' }
+  %head= render 'partials/head'
+  %body.bp
+    #container
+      %header
+        .blog-title e-Rambler
+        .blog-subtitle Jez Cope's e-learning blog
+      %nav= render 'partials/nav'
+      %article
+        %h1.post-title= @item[:title]
+        .post-date= date_for(@item).strftime '%A %e %B, %Y'
+        .post-content= yield
+      #sidebar
+        Sidebar
+      %footer
+        Footer

layouts/home.haml

@@ -9,8 +9,7 @@
           <h2>Jez Cope's e-learning blog</h2>
       %nav= render 'partials/nav'
       #content
-        %article
-          = yield
+        = yield
       #sidebar
         Sidebar
       %footer

layouts/partials/article_index.haml

@@ -0,0 +1,11 @@
+- n = @config[:page_size]
+- sorted_articles.drop(@page*n).take(n).each do |article|
+  %article
+    %h2= link_to article[:title], article
+    .post-date= date_for(article).strftime '%A %e %B, %Y'
+    .post-content= article.compiled_content
+#page-nav
+  - unless @page == 0
+    = link_to '<< Newer posts', archive_page_url(@page - 1)
+  - unless (@page+1) * n >= articles.count
+    = link_to 'Older posts >>', archive_page_url(@page + 1)

lib/blogging.rb

@@ -0,0 +1,33 @@
+require 'nokogiri'
+
+include Nanoc3::Helpers::Blogging
+
+def date_for(article)
+  attribute_to_time article[:created_at]
+end
+
+def excerpt_for(article, pars = 1)
+	article[:excerpt] || generate_excerpt(article, pars)
+end
+
+def generate_excerpt(article, pars = 1)
+	doc = Nokogiri::HTML::DocumentFragment.parse(article.compiled_content)
+	doc.css('p')[0,pars].to_html
+end
+
+def paginate_articles
+	1.upto(articles.count/@config[:page_size]) do |page|
+		@items << Nanoc3::Item.new(
+			"= render 'partials/article_index', :page => #{page}",
+			{ :title => "Archive page #{page}" },
+			"/archives/#{page}")
+	end
+end
+
+def archive_page_url(i)
+	if i == 0
+		'/'
+	else
+		"/archives/#{i}/"
+	end
+end

lib/default.rb

@@ -3,8 +3,3 @@
 
 include Nanoc3::Helpers::LinkTo
 include Nanoc3::Helpers::Rendering
-include Nanoc3::Helpers::Blogging
-
-def date_for(article)
-  DateTime.parse article[:created_at]
-end