changes for jekyll 3.0

static_comments.rb

@@ -18,37 +18,43 @@
 #  You should have received a copy of the GNU General Public License along
 #  with this program; if not, see <http://www.gnu.org/licences/>
 
-class Jekyll::Post
-	alias :to_liquid_without_comments :to_liquid
-
-	def to_liquid(*args)
-		data = to_liquid_without_comments(*args)
-		data['comments'] = StaticComments::find_for_post(self)
-		data['comment_count'] = data['comments'].length
-		data
+Jekyll::Hooks.register :posts, :pre_render do |post, payload|
+	# code to call before Jekyll renders a post
+	id = payload["page"]["id"]
+	comments = StaticComments::find_for_post(payload["page"]["id"], payload["site"]["source"])
+	payload["page"]["comments"] = comments
+	payload["page"]["comment_count"] = comments.length
+	payload["page"]["has_comments"] = (comments.length > 0)
+end
+
+Jekyll::Hooks.register :site, :pre_render do |post, payload|
+	payload["site"]["posts"].each do |d|
+		comments = StaticComments::find_for_post(d.id, payload["site"]["source"])
+
+		d.data["comment_count"] = comments.length
 	end
 end
 
 module StaticComments
 	# Find all the comments for a post
-	def self.find_for_post(post)
-		@comments ||= read_comments(post.site.source)
-		@comments[post.id]
+	def self.find_for_post(post_id, site)
+		@comments ||= read_comments(site)
+		@comments[post_id]
 	end
-	
+
 	# Read all the comments files in the site, and return them as a hash of
 	# arrays containing the comments, where the key to the array is the value
 	# of the 'post_id' field in the YAML data in the comments files.
 	def self.read_comments(source)
 		comments = Hash.new() { |h, k| h[k] = Array.new }
-		
+
 		Dir["#{source}/**/_comments/**/*"].sort.each do |comment|
 			next unless File.file?(comment) and File.readable?(comment)
 			yaml_data = YAML::load_file(comment)
 			post_id = yaml_data.delete('post_id')
 			comments[post_id] << yaml_data
 		end
-		
+
 		comments
 	end
 end