Question

我有一个Rails 5应用程序和自定义模块，存储在lib/reusable.rb中。

module Reusable

    def createCharge(amount, source, description, customer)

        charge_params = {
            amount: amount,
            source: source,
            description: description,
            currency: 'usd'
        }

        return charge_params
    end
end

我已将以下内容添加到application.rb：

config.autoload_paths << "#{Rails.root}/lib"
config.eager_load_paths << "#{Rails.root}/lib"

启动控制台时，我可以运行以下命令：

2.3.4 :002 > include Reusable
 => Object
2.3.4 :003 > x = Reusable.createCharge(100, 1, "ffwefwef")
{
         :amount => 100,
         :source => 1,
    :description => "ffwefwef",
       :currency => "usd"
}

但是在我的控制器中，我不能这样做。当我尝试以下操作时：

class ChargesController < ApplicationController
    before_action :authenticate_user!, only: [:new, :create]
    before_action :set_client, only: [:new, :create]
    before_action :set_order, only: [:create]

    include Reusable

    def create
        charge_attempt = Reusable.createCharge(total, token, description, customer)
    end
end

我得到了错误：

NoMethodError (undefined method `createCharge' for Reusable:Module):

有什么想法为什么找不到该功能？我已经重新启动了我的应用程序，并将Reusable.methods打印到控制台上，但该功能不存在。

Answer 1

有几种方法可以使您的createCharge方法可用...

一种方法是module_function ...

module Reusable
  def create_charge(amount, source, description, customer)
    charge_params = {
      amount: amount,
      source: source,
      description: description,
      currency: 'usd'
    }
    charge_params
  end

  module_function :create_charge
end

另一种方法是使用自我...

def self.create_charge(amount, source, description, customer)

在控制器中找不到Rails 5自定义模块功能

1 个答案: