如何擁有與'params'函數相同的行爲？

Question

控制器功能receivent參數等

{"v1" => { "v2" => "1", "v3" => "" }, "v4" => "true"} 

的params功能允許使用

• x = params[:v1]，相當於​​
• if params[:v4]，相當於["true", "1"].include?(params["v4"])
• if (params[:v1][:v2] == 1)，相當於params["v1"]["v2"] == "1"

有什麼方法可以比params函數有其他的數據行爲嗎？

我希望能夠寫類似的東西...

my_params = {"v1" => { "v2" => "1", "v3" => "" }, "v4" => "true"} 
x = my_params[:v1] 
if my_params[:v4] 
if (my_params[:v1][:v2] == 1) 

或者具有功能some_function

我在Rails的2

Answer 1

你想要一個hash with indifferent access：

h = { a: { b: 1, 'c' => 2 } } 
=> {:a=>{:b=>1, "c"=>2}} 
h[:a][:c] 
=> nil 


h2 = h.with_indifferent_access 
=> {"a"=>{"b"=>1, "c"=>2}} 

h2['a'][:c] 
=> 2 
h2[:a][:c] 
=> 2