deep_nested_json.rb

user = User.all[100..120]
root_url = "www.wahwah.fm"
current_user = User.find(150)


jsonstring = "[#{user.collect { |u|
  listenerhash = {:listenercount => u.listeners.count}
  u.listeners.around_me(point1, point2).each_with_index do |listener, i|
    listenerhash.merge!({i => {:name => listener.name}})
  end
  userhash = {
    :name => u.name, 
    :userid => u.id,
    :userpicture=> {:type => "picture/png",  :href => root_url.without_last_slash + u.avatar.url(:mini)},
    :userpicturethumb => {:type => "picture/png", :href => root_url.without_last_slash + u.avatar.url(:thumb)},  
    :userpicturelarge => {:type => "picture/png",:href => root_url.without_last_slash + u.avatar.url(:large)},
    :favorite => current_user.favorite_user?(u),
    :follower_count => u.follower_count,
    :listener => listenerhash
  }
  userhash.merge!({:position => {:latitude => u.current_position.latitude,
                :longitude => u.current_position.longitude,
                :elevation => u.current_position.elevation.to_i}}) unless u.current_position.nil? 
  ActiveSupport::JSON.encode(userhash)
}* ','}]"



ActiveSupport::JSON.decode(jsonstring)