相关疑难解决方法(0)

我经常发现自己在写这个:

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

删除的痕迹感觉不对,也没有:

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

有什么更简单,更清洁的吗？

I'm wondering if it's possible to collet many attributes from a hash.

Currently using ruby 2.6.3

Something like that

hash = { name: "Foo", email: "Bar", useless: nil }
other_hash = hash[:name, :email]

The output should be another hash but without the useless key/value