轨道：在过滤前和放中断 [英] rails: put and interruption in before filter

问题描述

我想这样叫的时候，如果用户没有权限写入must_have_permission_to_write过滤器之前呈现一个消息，说：你不能这样做！而归。

I want a before filter like "must_have_permission_to_write" that when called if user hasn't permission to write renders a message saying "you can't do that!" and return.

但问题是我得到只能渲染或每行动一次重定向当然......
我怎么能停在过滤器之前执行？
谢谢

Problem is I'm getting "can only render or redirect once per action" of course... how can I stop the execution in the before filter? thanks

推荐答案

我觉得最简单的答案就是添加一个重定向并返回false到你的 must_have_permission_to_write 方法。

I think the easiest answer is add a redirect and return false to your must_have_permission_to_write method.

def must_have_permission_to_write
  unless current_user.has_permission?(something)
    redirect_to access_denied_path 
    return false
  end
end

然后，创建地方拒绝访问操作，添加路由，并把任何你想在模板中。

Then, create an action for access denied somewhere, add the route, and put whatever you want in the template.

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