Flickr Image Tag Plugin for Jekyll

flickr_image.rb

# Modified Flickr Image Tag Plugin
#
# The original plugin was created by Daniel Reszka and is available here:
# https://gist.github.com/danielres/3156265/
#
# The modifications include:
#   - a link to the original, full size image as well as the Flickr Page for the image;
#   - and the ability to specify an image class in the tag
#       i.e. {% flickr_image 7614906062 alignright %}.
 
require 'flickraw'
module Jekyll
 
  class FlickrImageTag < Liquid::Tag
 
    def initialize(tag_name, markup, tokens)
      super
      params = Shellwords.shellwords markup
      
      @id      = params[0]
      @classes = params[1] || "alignleft"
      @size    = params[2] || "q"
    end
   
    def render(context)
      
      # hack to convert a variable into an actual flickr set id
      if @id =~ /([\w]+\.[\w]+)/i
        @id = Liquid::Template.parse('{{ '+@id+' }}').render context
      end
   
      flickrConfig = context.registers[:site].config["flickr"]
      FlickRaw.api_key        = flickrConfig['api_key']
      FlickRaw.shared_secret  = flickrConfig['shared_secret']
      flickr.access_token     = flickrConfig['access_token']
      flickr.access_secret    = flickrConfig['access_secret']
   
      info = flickr.photos.getInfo(:photo_id => @id)
   
      server        = info['server']
      farm          = info['farm']
      id            = info['id']
      secret        = info['secret']
      title         = info['title']
      description   = info['description']
      size          = "_#{@size}" if @size
      classes       = "#{@classes}" if @classes
      src           = "http://farm#{farm}.static.flickr.com/#{server}/#{id}_#{secret}#{size}.jpg"
      full          = "http://farm#{farm}.static.flickr.com/#{server}/#{id}_#{secret}_b.jpg"
      page_url      = info['urls'][0]["_content"]
   
      img_tag       = "<img src='#{src}' alt=\"#{title}\" />"
      link_tag      = "<ul class='flickr image #{classes}'>"
      link_tag     += "<li>"
      link_tag     += "<a title=\"#{title}\" href='#{full}' class=\"image\">#{img_tag}</a>"
      link_tag     += "<a title='View on Flickr' href='#{page_url}' class='flickrlink'> </a>"
      link_tag     += "</li>"
      link_tag     += "</ul>"
   
    end
  end
end
 
Liquid::Template.register_tag('flickr_image', Jekyll::FlickrImageTag)