How to use a variable as object attribute in rails?

Question

I have a PaymentDetail model with attribute \'home_address_country\', so i can use

    @payment_detail.home_address_country //where @payment_detail is object         


        

Answer 1

Recommended way for Rails 3 is to use dictionary-like access:

attr = @payment_detail["#{address_type}_address_country"]
attr = "new value"
@payment_detail["#{address_type}_address_country"] = attr

read_attribute and write_attribute methods work for Rails 2 only.