Question

我制作了一个简单的Rails应用程序，允许人们对帖子发表评论。如何阻止该用户一遍又一遍地提交该表单？在reddit.com上，他们只允许新用户每十分钟发一次新帖子。我如何使用简单的博客/评论系统来完成这项工作？任何帮助将不胜感激。感谢您阅读我的问题。编辑：我试图在没有用户模型的情况下完成此任务。

这是我目前的评论控制器：

class CommentsController < ApplicationController
  # before_filter :require_user, :only => [:index, :show, :new, :edit]

  before_filter :post_check

  def record_post_time
    cookies[:last_post_at] = Time.now.to_i
  end

  def last_post_time
    Time.at((cookies[:last_post_at].to_i rescue 0))       
  end

  MIN_POST_TIME = 2.minutes

  def post_check
    return true if  (Time.now - last_post_time) > MIN_POST_TIME

    # handle error
    # flash("Too many posts")
  end

  def index
    @message = Message.find(params[:message_id])
    @comments = @message.comments
  end

  def show
    @message = Message.find(params[:message_id])
    @comment = @message.comments.find(params[:id])
  end

  def new
    @message = Message.find(params[:message_id])
    @comment = @message.comments.build
  end

  def edit
    @message = Message.find(params[:message_id])
    @comment = @message.comments.find(params[:id])
  end

  def create
    @message = Message.find(params[:message_id])
    @comment = @message.comments.build(params[:comment])
    #@comment = Comment.new(params[:comment])
    if @comment.save
      record_post_time#
      flash[:notice] = "Replied to \"#{@message.title}\""
      redirect_to(@message)
      # redirect_to post_comment_url(@post, @comment) # old
    else
      render :action => "new"
    end
  end

  def update
    @message = Message.find(params[:message_id])
    @comment = Comment.find(params[:id])
    if @comment.update_attributes(params[:comment])
      record_post_time
      redirect_to post_comment_url(@message, @comment)
    else
      render :action => "edit"
    end  
  end

  def destroy

  end
end

Answer 1

试试这个：

class CommentsController < ApplicationController
before_filter :post_check        
def record_post_time
  cookies[:last_post_at] = Time.now.to_i
end
def last_post_time
  Time.at((cookies[:last_post_at].to_i rescue 0))       
end    
MIN_POST_TIME = 2.minutes    
def post_check
  return true if  (Time.now - last_post_time) > MIN_POST_TIME
  flash[:notice] = "Too many comments makes you a busy cat!"
  @message = Message.find(params[:message_id])
  redirect_to(@message)
  return false
end
def create
  @comment = Comment.new(params[:comment])
  if @comment.save
    record_post_time
  else
  end
end

def update
  @comment = Comment.find(parms[:id])
  if @comment.update_attributes(params[:comment]))
    record_post_time
  else
  end
end    
end

Answer 2

在你的评论课中你可以这样做：

validate :posting_too_often

def posting_too_often
  c = self.post.comments.find_by_user_id(self.user_id, :limit => 1, :order => 'created_at desc')
  if c && c.created_at > 10.minutes.ago
    self.errors.add_to_base("stop posting so many crappy comments!")
  end
end

这可能不起作用，因为我没有测试它，但它应该向你发送正确的方向。你在做什么：

在创建评论之前，请加载该用户的最后一条评论。如果它存在且在过去10分钟内发布，则向基础添加错误，并解释无法保存的原因。

我希望这有帮助！

如何防止在rails应用程序中过快地重新提交表单？

2 个答案: