Ruby on Rails:删除多个哈希键 [英] Ruby on Rails: Delete multiple hash keys

问题描述

我经常发现自己在写这个:

I often find myself writing this:

params.delete(:controller)  
params.delete(:action)  
params.delete(:other_key)  
redirect_to my_path(params)  

删除的轨迹感觉不对，也不对:

The trail of deletes doesn't feel right and neither does:

[:controller, :action, :other_key].each do |k|
  params.delete(k)
end

有没有更简单更干净的东西?

Is there anything simpler and cleaner?

推荐答案

我猜你不知道 Hash#except 方法 ActiveSupport 添加到 Hash.

I'm guessing you're unaware of the Hash#except method ActiveSupport adds to Hash.

它将允许您的代码简化为:

It would allow your code to be simplified to:

redirect_to my_path(params.except(:controller, :action, :other_key))

此外，您不必进行猴子补丁，因为 Rails 团队为您完成了！

Also, you wouldn't have to monkey patch, since the Rails team did it for you!

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