如何獲取一個方法中的實例變量的值到同一控制器中的另一個方法？在我的控制器

Question

一種方法如下：

def new_equipment_matches_wanted 
#..........Big chucnk of code of about 7 to 8 lines and then.. 
@receiver 
end 

現在我確定，我想訪問此@receiver實例變量的值的另一種方法。它將有一個單獨的模板。

def send_receivers_to_admin 
#supposedly I am trying send @receiver values here 
end 

我該如何做到這一點？或者我應該在第二種方法中編寫相同的代碼，也只是爲了訪問該變量中的值？

Answer 1

實例變量（帶@）在所有控制器的方法中共享。

def new_equipment_matches_wanted 
#..........Big chucnk of code of about 7 to 8 lines and then.. 
@receiver 
end 
def send_receivers_to_admin 
@receiver.do_something 
end 

你可以閱讀更多有關變量的here

然而，隨着塞爾吉奧說，

「在請求之間傳遞實例變量是不可能的...... 控制器行動支持不同的請求」

那麼你必須在兩種方法中加載@receiver，你可以使用before_action

class CustomController < ActionController::Base 
    before_action :load_receiver, only [:send_receivers_to_admin,:new_equipment_matches_wanted] 

def new_equipment_matches_wanted 
    @receiver.do_something 
end 

def send_receivers_to_admin 
@receiver.do_something 
end 

private 

def load_receiver 
    # Big chucnk of code of about 7 to 8 lines and then.. 
    @receiver 
end