按名称调用方法 [英] Call a method by name

问题描述

有谁知道如何将方法作为字符串调用?例如:

Does anyone know how to call a method as a string? For example:

case @setting.truck_identification
when "Make"
  t.make
when "VIN"
  t.VIN
when "Model"
  t.model
when "Registration"
  t.registration

.to_sym 似乎不起作用.

推荐答案

use .send:

t.send @setting.truck_identification.downcase

(vin 应该是小写的以使其工作)

(vin should be downcase for it to work)

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