post.rb

#require File.dirname(__FILE__) + '/../vendor/couchrest/couchrest'
require File.dirname(__FILE__) + '/../vendor/maruku/maruku'

$LOAD_PATH.unshift File.dirname(__FILE__) + '/../vendor/syntax'
require 'syntax/convertors/html'

class Post < CouchRest::Model
  use_database CouchRest.database!((Blog.url_base_database || '') + Blog.database_name)
  key_accessor :title, :body, :slug, :tags, :not_public
  
  view_by :created_at, :descending=>true
  view_by :slug
  view_by :not_public
  view_by :created_at_and_public, :descending=>true,
    :map =>
      "function(doc) {
        if(doc['couchrest-type'] == 'Post' && !doc['not_public']) {
          emit(doc['created_at'],1);
        }
      }",
    :reduce => 
      "function(keys, values, rereduce) {
        return sum(values);
      }"

  view_by :tags,
    :map => 
      "function(doc) {
        if (doc['couchrest-type'] == 'Post' && doc['tags']) {
          doc['tags'].forEach(function(tag){
            emit(tag, 1);
          });
        }
      }",
    :reduce => 
      "function(keys, values, rereduce) {
        return sum(values);
    }" 
  
  view_by :tags_and_public,
    :map => 
      "function(doc) {
        if (doc['couchrest-type'] == 'Post' && doc['tags'] && !doc['not_public']) {
          doc['tags'].forEach(function(tag){
            emit(tag, 1);
          });
        }
      }",
    :reduce => 
      "function(keys, values, rereduce) {
        return sum(values);
    }"
  
  timestamps!
  
  couchrest_type = 'Post'  
  
  def created_at
    unless self['created_at'].nil?
      self['created_at'] = Time.parse(self['created_at']) unless self['created_at'].respond_to?('year')
    end
    self['created_at']
  end
  
	def url
		d = self.created_at
		"/past/#{d.year}/#{d.month}/#{d.day}/#{slug}/"
	end

	def full_url
		Blog.url_base.gsub(/\/$/, '') + url
	end

	def body_html
		to_html(self['body'])
	end

	def summary
		summary, more = split_content(self['body'])
		summary
	end

	def summary_html
		to_html(summary)
	end

	def more?
		summary, more = split_content(self['body'])
		more
	end

	def linked_tags
		self['tags'].inject([]) do |accum, tag|
			accum << "<a href=\"/past/tags/#{tag}\">#{tag}</a>"
		end.join(" ")
	end

	def self.make_slug(title)
		title.downcase.gsub(/ /, '_').gsub(/[^a-z0-9_]/, '').squeeze('_')
	end

	########

	def to_html(markdown)
		h = Maruku.new(markdown).to_html
		h.gsub!(/<pre>/, "<pre class=\"prettyprint\">")
		h
	end

	def split_content(string)
		parts = string.gsub(/\r/, '').split("\n\n")
		show = []
		hide = []
		parts.each do |part|
			if show.join.length < 100
				show << part
			else
				hide << part
			end
		end
		[ to_html(show.join("\n\n")), hide.size > 0 ]
	end
end