在jQuery和RubyonRails中制作一篇简单的ajax文章

HTML格式:

= link_to image_tag(current_user.votes.any? {|v| v.votable_id == post.id && v.value > 0} ? 'vote-up-selected.jpg' : 'vote-up.jpg'), vote_up_post_path(post)

控制器:

def vote_up
  get_vote
  @vote.value += 1 unless @vote.value == 1
  @vote.save
  respond_to do |format|
    #format.html { render :action => 'vote_up', , :notice => "Voted Up." ) }
  end
end