Class: Jekyll::RelatedPosts

Inherits:
Object
  • Object
show all
Defined in:
lib/jekyll/related_posts.rb

Class Attribute Summary collapse

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(post) ⇒ RelatedPosts

Returns a new instance of RelatedPosts.



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# File 'lib/jekyll/related_posts.rb', line 10

def initialize(post)
  @post = post
  @site = post.site
  require 'classifier' if site.lsi
end

Class Attribute Details

.lsi ⇒ Object

Returns the value of attribute lsi.



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# File 'lib/jekyll/related_posts.rb', line 5

def lsi
  @lsi
end

Instance Attribute Details

#post ⇒ Object (readonly)

Returns the value of attribute post.



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# File 'lib/jekyll/related_posts.rb', line 8

def post
  @post
end

#site ⇒ Object (readonly)

Returns the value of attribute site.



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# File 'lib/jekyll/related_posts.rb', line 8

def site
  @site
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/jekyll/related_posts.rb', line 16

def build
  return [] unless self.site.posts.size > 1

  if self.site.lsi
    build_index
    lsi_related_posts
  else
    most_recent_posts
  end
end

#build_index ⇒ Object 



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# File 'lib/jekyll/related_posts.rb', line 28

def build_index
  self.class.lsi ||= begin
    lsi = Classifier::LSI.new(:auto_rebuild => false)
    display("Populating LSI...")

    self.site.posts.each do |x|
      lsi.add_item(x)
    end

    display("Rebuilding index...")
    lsi.build_index
    display("")
    lsi
  end
end

#display(output) ⇒ Object 



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# File 'lib/jekyll/related_posts.rb', line 53

def display(output)
  $stdout.print("\n")
  $stdout.print(Jekyll.logger.formatted_topic(output))
  $stdout.flush
end

#lsi_related_posts ⇒ Object 



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# File 'lib/jekyll/related_posts.rb', line 44

def lsi_related_posts
  self.class.lsi.find_related(post.content, 11) - [self.post]
end

#most_recent_posts ⇒ Object 



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# File 'lib/jekyll/related_posts.rb', line 48

def most_recent_posts
  recent_posts = self.site.posts.reverse - [self.post]
  recent_posts.first(10)
end