Graeme Mathieson mathie

mathie / node.rb

Created April 22, 2016 05:28

	class Node < ActiveRecord::Base
	def parent
	if parent_id = path.last
	self.class.find(parent_id)
	else
	nil
	end
	end
	end

mathie / node.rb

Created April 22, 2016 05:30

	class Node < ActiveRecord::Base
	def ancestors
	if path.present?
	self.class.where(id: path)
	else
	self.class.none
	end
	end
	end

mathie / node.rb

Created April 22, 2016 05:32

	class Node < ActiveRecord::Base
	def siblings
	self.class.where(path: path)
	end
	end

mathie / node.rb

Created April 22, 2016 05:33

	class Node < ActiveRecord::Base
	def children
	self.class.where(path: path + [id])
	end
	end

mathie / node.rb

Created April 22, 2016 05:34

	class Node < ActiveRecord::Base
	def descendants
	self.class.where(“:id = ANY(path)”, id: id)
	end
	end

mathie / nodes_controller.rb

Created April 22, 2016 05:36

	class NodesController < ActionController::Base
	def index
	@nodes = Node.roots
	end
	end

mathie / index.html.erb

Last active April 22, 2016 05:41

mathie / _node.html.erb

Created April 22, 2016 05:42

mathie / nodes_controller.rb

Created April 22, 2016 05:44

	class NodesController < ActionController::Base
	def index
	@nodes = Node.roots.eager_load(:descendants)
	end
	end

mathie / index.html

Created May 4, 2016 16:24

The simplest thing that could possibly work...

	<html xmlns="http://www.w3.org/1999/xhtml" >
	<head>
	<title>A Sneak Peek at The Internet</title>
	</head>
	<body>
	<h1>A Sneak Peek at The Internet</h1>

	<p>Now hosted on <a href=“https://aws.amazon.com/“>Amazon Web Services</a>!</p>
	</body>
	</html>