Class: Jekyll::Post

Inherits:
Object
  • Object
show all
Includes:
Comparable, Convertible
Defined in:
lib/jekyll/post.rb

Class Attribute Summary collapse

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Convertible

#content_type, #do_layout, #read_yaml, #to_s, #transform

Constructor Details

#initialize(site, source, dir, name) ⇒ Post

Initialize this Post instance.

+site+ is the Site
+base+ is the String path to the dir containing the post file
+name+ is the String filename of the post file
+categories+ is an Array of Strings for the categories for this post

Returns <Post>



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# File 'lib/jekyll/post.rb', line 25

def initialize(site, source, dir, name)
  @site = site
  @base = File.join(source, dir, '_posts')
  @name = name

  if File.file?(File.join(@base, name))
    self.read_yaml(@base, name)
  else
    self.data = {}
  end

  self.categories = dir.split('/').reject { |x| x.empty? }

  if self.data.has_key?('published') && self.data['published'] == false
    self.published = false
  else
    self.published = true
  end

  if self.data.has_key?("tag")
    self.tags = [self.data["tag"]]
  elsif self.data.has_key?("tags")
    self.tags = self.data['tags']
  else
    self.tags = []
  end

  if self.categories.empty?
    if self.data.has_key?('category')
      self.categories << self.data['category']
    elsif self.data.has_key?('categories')
      # Look for categories in the YAML-header, either specified as
      # an array or a string.
      if self.data['categories'].kind_of? String
        self.categories = self.data['categories'].split
      else
        self.categories = self.data['categories']
      end
    end
  end

  self.process(name) if published?
end

Class Attribute Details

.lsi ⇒ Object

Returns the value of attribute lsi.



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

def lsi
  @lsi
end

Instance Attribute Details

#categories ⇒ Object 



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# File 'lib/jekyll/post.rb', line 14

def categories
  @categories ||= []
end

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/jekyll/post.rb', line 11

def content
  @content
end

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/jekyll/post.rb', line 11

def data
  @data
end

#date ⇒ Object

Returns the value of attribute date.



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# File 'lib/jekyll/post.rb', line 11

def date
  @date
end

#ext ⇒ Object

Returns the value of attribute ext.



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# File 'lib/jekyll/post.rb', line 11

def ext
  @ext
end

#output ⇒ Object

Returns the value of attribute output.



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# File 'lib/jekyll/post.rb', line 11

def output
  @output
end

#published ⇒ Object

Returns the value of attribute published.



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# File 'lib/jekyll/post.rb', line 11

def published
  @published
end

#site ⇒ Object

Returns the value of attribute site.



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# File 'lib/jekyll/post.rb', line 11

def site
  @site
end

#slug ⇒ Object

Returns the value of attribute slug.



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# File 'lib/jekyll/post.rb', line 11

def slug
  @slug
end

#tags ⇒ Object

Returns the value of attribute tags.



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# File 'lib/jekyll/post.rb', line 11

def tags
  @tags
end

Instance Method Details

#<=>(other) ⇒ Object

Spaceship is based on Post#date, slug

Returns -1, 0, 1



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# File 'lib/jekyll/post.rb', line 72

def <=>(other)
  cmp = self.date <=> other.date
  if 0 == cmp
   cmp = self.slug <=> other.slug
  end
  return cmp
end

#dir ⇒ Object

The generated directory into which the post will be placed upon generation. This is derived from the permalink or, if permalink is absent, set to the default date e.g. “/2008/11/05/” if the permalink style is :date, otherwise nothing

Returns <String>



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# File 'lib/jekyll/post.rb', line 120

def dir
  File.dirname(url)
end

#id ⇒ Object

The UID for this post (useful in feeds) e.g. /2008/11/05/my-awesome-post

Returns <String>



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# File 'lib/jekyll/post.rb', line 168

def id
  File.join(self.dir, self.slug)
end

#inspect ⇒ Object 



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# File 'lib/jekyll/post.rb', line 246

def inspect
  "<Post: #{self.id}>"
end

#next ⇒ Object 



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# File 'lib/jekyll/post.rb', line 250

def next
  pos = self.site.posts.index(self)

  if pos && pos < self.site.posts.length-1
    self.site.posts[pos+1]
  else
    nil
  end
end

#permalink ⇒ Object

The full path and filename of the post. Defined in the YAML of the post body (Optional)

Returns <String>



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# File 'lib/jekyll/post.rb', line 129

def permalink
  self.data && self.data['permalink']
end

#previous ⇒ Object 



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# File 'lib/jekyll/post.rb', line 260

def previous
  pos = self.site.posts.index(self)
  if pos && pos > 0
    self.site.posts[pos-1]
  else
    nil
  end
end

#process(nn) ⇒ Object

Extract information from the post filename

+name+ is the String filename of the post file

Returns nothing



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# File 'lib/jekyll/post.rb', line 96

def process(nn)
  name = nn.dup
  if name.sub!(/(\d+-\d+-\d+)-/, '')
    self.date = Time.parse($1)
  else
    if date = self.data["date"]
      self.date = date.kind_of?(Time) ? date : Time.parse(date)
    end
  end
  matcher = /^(.+\/)*(.*)(\.[^.]+)$/
  m, cats, slug, self.ext = *name.match(matcher)
  if self.data && self.data["title"]
    self.slug = self.data["title"].split.collect { |i| i.downcase }.join("-")
  else
    self.slug = slug
  end
end

#published? ⇒ Boolean

Returns <Bool>

Returns:

  • (Boolean) 


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# File 'lib/jekyll/post.rb', line 81

def published?
  published
end

#related_posts(posts) ⇒ Object

Calculate related posts.

Returns [<Post>]



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# File 'lib/jekyll/post.rb', line 175

def related_posts(posts)
  return [] unless posts.size > 1

  if self.site.lsi
    self.class.lsi ||= begin
      puts "Running the classifier... this could take a while."
      lsi = Classifier::LSI.new
      posts.each { |x| $stdout.print(".");$stdout.flush;lsi.add_item(x) }
      puts ""
      lsi
    end

    related = self.class.lsi.find_related(self.content, 11)
    related - [self]
  else
    (posts - [self])[0..9]
  end
end

#render(layouts, site_payload) ⇒ Object

Add any necessary layouts to this post

+layouts+ is a Hash of {"name" => "layout"}
+site_payload+ is the site payload hash

Returns nothing



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# File 'lib/jekyll/post.rb', line 199

def render(layouts, site_payload)
  # construct payload
  payload =
  {
    "site" => { "related_posts" => related_posts(site_payload["site"]["posts"]) },
    "page" => self.to_liquid
  }
  payload = payload.deep_merge(site_payload)

  do_layout(payload, layouts)
end

#template ⇒ Object 



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# File 'lib/jekyll/post.rb', line 133

def template
  case self.site.permalink_style
  when :pretty
    "/:categories/:year/:month/:day/:title/"
  when :none
    "/:categories/:title.html"
  when :date
    "/:categories/:year/:month/:day/:title.html"
  else
    self.site.permalink_style.to_s
  end
end

#to_liquid ⇒ Object

Convert this post into a Hash for use in Liquid templates.

Returns <Hash>



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# File 'lib/jekyll/post.rb', line 234

def to_liquid
  { "title"      => self.data["title"] || self.slug.split('-').select {|w| w.capitalize! || w }.join(' '),
    "url"        => self.url,
    "date"       => self.date,
    "id"         => self.id,
    "categories" => self.categories,
    "next"       => self.next,
    "previous"   => self.previous,
    "tags"       => self.tags,
    "content"    => self.content }.deep_merge(self.data)
end

#url ⇒ Object

The generated relative url of this post e.g. /2008/11/05/my-awesome-post.html

Returns <String>



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# File 'lib/jekyll/post.rb', line 150

def url
  return permalink if permalink

  @url ||= {
    "year"       => date.strftime("%Y"),
    "month"      => date.strftime("%m"),
    "day"        => date.strftime("%d"),
    "title"      => CGI.escape(slug),
    "categories" => categories.sort.join('/')
  }.inject(template) { |result, token|
    result.gsub(/:#{token.first}/, token.last)
  }.gsub(/\/\//, "/")
end

#valid? ⇒ Boolean

Post validator. Every post must have e.g. a title.

Returns <Bool>

Returns:

  • (Boolean) 


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# File 'lib/jekyll/post.rb', line 88

def valid?
  (self.ext && self.slug && self.date && self.url) ? true : false
end

#write(dest) ⇒ Object

Write the generated post file to the destination directory.

+dest+ is the String path to the destination dir

Returns nothing



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# File 'lib/jekyll/post.rb', line 215

def write(dest)
  FileUtils.mkdir_p(File.join(dest, dir))

  # The url needs to be unescaped in order to preserve the correct filename
  path = File.join(dest, CGI.unescape(self.url))

  if template[/\.html$/].nil?
    FileUtils.mkdir_p(path)
    path = File.join(path, "index.html")
  end

  File.open(path, 'w') do |f|
    f.write(self.output)
  end
end