Module: ResourceFeeder::Rss

Extended by:
Rss
Included in:
Rss
Defined in:
lib/resource_feeder/rss.rb

Instance Method Summary collapse

Instance Method Details

#render_rss_feed_for(resources, options = {}) ⇒ Object 



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# File 'lib/resource_feeder/rss.rb', line 7

def render_rss_feed_for(resources, options = {})
  render :text => rss_feed_for(resources, options), :content_type => Mime::RSS
end

#rss_feed_for(resources, options = {}) ⇒ Object 



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# File 'lib/resource_feeder/rss.rb', line 11

def rss_feed_for(resources, options = {})
  xml = Builder::XmlMarkup.new(:indent => 2)

  options[:feed]       ||= {}
  options[:item]       ||= {}
  options[:url_writer] ||= self
  
  if options[:class] || resources.first
    klass      = options[:class] || resources.first.class
    new_record = klass.new
  else
    options[:feed] = { :title => "Empty", :link => "http://example.com" }
  end
  
  options[:feed][:title]    ||= klass.name.pluralize
  options[:feed][:link]     ||= polymorphic_url(new_record)
  options[:feed][:language] ||= "en-us"
  options[:feed][:ttl]      ||= "40"
  
  options[:item][:title]       ||= [ :title, :subject, :headline, :name ]
  options[:item][:description] ||= [ :description, :body, :content ]
  options[:item][:pub_date]    ||= [ :updated_at, :updated_on, :created_at, :created_on ]

  resource_link = lambda { |r| polymorphic_url(r) }

  xml.instruct!
  xml.rss(:version => "2.0") do
    xml.channel do
      xml.title(options[:feed][:title])
      xml.link(options[:feed][:link])
      xml.description(options[:feed][:description]) if options[:feed][:description]
      xml.language(options[:feed][:language])
      xml.ttl(options[:feed][:ttl])

      for resource in resources
        xml.item do
          xml.title(call_or_read(options[:item][:title], resource))
          xml.description(call_or_read(options[:item][:description], resource))
          xml.pubDate(call_or_read(options[:item][:pub_date], resource).to_s(:rfc822))
          xml.guid(call_or_read(options[:item][:guid] || options[:item][:link] || resource_link, resource))
          xml.link(call_or_read(options[:item][:link] || options[:item][:guid] || resource_link, resource))
        end
      end
    end
  end
end