twitter_link

gistfile1.rb

def twitter_link(handle)
	avatars_path = 'public/img/avatars/'
	avatar       = handle + '.jpg'
	avatar_path  = avatars_path + avatar
	img_tag      = "<img src='#{avatar_path.sub(/^public/, '')}' />"

	# Check and see if there's already an avatar.
	unless File.exists?(avatar_path)
		# We don't have it. Let's try to get it from Twitter.
		begin
			img_url = Twitter.profile_image(handle, :size => 'mini')

			open(avatar_path, 'wb') do |file|
			  file << open(img_url).read
			end
		rescue Exception => e
			img_tag = nil
		end
	end

  if img_tag
    "<a href='http://twitter.com'/#{handle}>#{img_tag}</a>"
  else
    # whatever you want to return if the image tag isn't there
  end
end