custom sass function chooses a random(seeded) font name. want to get font name so i can include it in app head (google web font link). files as they currently are work, but pick two different fonts :( help?

fakeapp.rb

class FakeApp 
  include Sass::Script::Functions
  @@current_app = nil

  attr_accessor :name, :dataset, :font

  PREFIXES = ["responsive", "game", "beta", "tech", "digital", "social", "my", "our", "the", "all", "in", "on"]
  SUFFIXES = ["box", "grid", "share", "wise", "hop", "works", "bit", "book", "list", "square", "rock", ".ly", "sy", "er", ".it", "ie", ".io", ".am", "ia", "ora", "ero", "ist", "ism", "ium", "ble", "ify", "ous", "ing"]
  TILE_LAYERS = ["'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {attribution: 'OpenStreetMap'}",
                  "'http://otile{s}.mqcdn.com/tiles/1.0.0/{type}/{z}/{x}/{y}.png', {subdomains: '1234', type: 'osm', attribution: 'MapQuestOpen'}",
                  "'http://otile{s}.mqcdn.com/tiles/1.0.0/{type}/{z}/{x}/{y}.png', {subdomains: '1234', type: 'sat', attribution: 'MapQuestOpen'}",
                  '"http://{s}.tile.opencyclemap.org/cycle/{z}/{x}/{y}.png", {attribution: "OpenCycleMap"}'
  ]

  def initialize
    @dataset = Dataset.load_random
    @subjects = self.dataset.json_obj["tags"]
    @name = self.getRandomName
    @tile_set = FakeApp.getRandomTiles
    @@current_app = self
    @font = getRandomFont.to_s.gsub(/ /, "+")
  end

  def self.current_app
    @@current_app
  end

  def getRandomName
    if rand > 0.7
      PREFIXES.sample + @subjects.sample
    else
      @subjects.sample + SUFFIXES.sample
    end
  end

  def self.getRandomTiles
    TILE_LAYERS.sample
  end

end

layout.haml

!!! 5
%html
  %head
    %title 
    %meta{:name => "viewport", :content => "width=device-width, initial-scale=1.0"}
    %link{:rel => 'stylesheet', :type => 'text/css', :href => "/stylesheet.css?seed=#{@seed}"}
    %link{:rel => 'stylesheet', :type => 'text/css', :href => "http://cdn.leafletjs.com/leaflet-0.5.1/leaflet.css"}
    %link{:href=>"http://fonts.googleapis.com/css?family=#{@app.font}", :rel=>'stylesheet', :type=>'text/css'}
    %script{:src => "http://cdn.leafletjs.com/leaflet-0.5.1/leaflet.js"}
  %body
    #wrap
      .container-fluid
        =yield
        #push
    %footer
      %span &copy Spring 2013
    %script{:src => "http://code.jquery.com/jquery-1.9.1.min.js"}
    %script{:type => "text/javascript", :src  => "/js/bootstrap.js"}

sass_helper.rb

require 'sass'

module Sass::Script::Functions
  FONTS = ["Lobster", "Raleway","Lato","Oleo Script","Special Elite","Fredoka One"]
  PATTERNS = ["img/bg_stripe.png", "img/bg_square.png"]
  APP = FakeApp.current_app

  def getRandomColor(as_str = true)
    if as_str
     Sass::Script::String.new("#%06x" % (rand * 0xffffff))
   else
     Sass::Script::Color.new([rand(255), rand(255), rand(255)])
   end
  end

  def getRandomFont
    font ||= '"' + FONTS.sample() + '"'
    Sass::Script::String.new(font)
  end

  def getRandomPixels()
    rpx ||= rand(40...60)
    Sass::Script::String.new(rpx.to_s + "px")
  end

  def getRandomPattern
    pattern ||= PATTERNS.sample()
    Sass::Script::String.new(pattern)
  end
end