如何將紅寶石散列中的屬性「向上」移動一個級別

Question

x = {:name => "John", :data => {:physical => {:age => 25, :weight => 150}}} 

我正在尋找將數據的子屬性向上移動一層（但不一定只是簡化所有屬性）。在這種情況下，我基本上希望將物理屬性「向上」移動一個級別。

我想這

y = x[:data'] 
y.each{ |key| x[key] = y[key] } 

，但我得到...

x = x.except(:data) 
=> {:name=>"John", [:physical, {:age=>25, :weight=>150}]=>nil} 

我找...

=> {:name=>"John", :physical => {:age=>25, :weight=>150}} 

Answer 1

試試這個：

x = x.merge(x.delete(:data)) 

Answer 2

我會追隨它：

x = {:name => "John", :data => {:physical => {:age => 25, :weight => 150}}} 

x[:physical] = x.delete(:data)[:physical] 

pp x #=> {:name=>"John", :physical=>{:age=>25, :weight=>150}}