Rails控制台应用程序初始化

Question

我今晚创建了一个新的rails应用程序（v.4.2.5），在ActiveRecord和ActiveModel内进行了一些实验。在修改了一些gems代码后，我注意到在启动/重启rails控制台时出现了一些意外行为。

实施例

1. 运行bundle open activemodel使用p语句修改方法，保存文件。 （截断的片段）。

   def define_proxy_call(include_private, mod, name, send, *extra) #:nodoc:
    p '+++++++++++++++++++++++++++++++++++++++++++++++++++'
   

2. 打开rails c调用将调用此方法的内容。

   Loading development environment (Rails 4.2.5)
   2.2.2 :001 >
   2.2.2 :001 > Product.new
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
   "+++++++++++++++++++++++++++++++++++++++++++++++++++"
    => #<Product id: nil, in_stock: nil, name: nil>
   2.2.2 :002 >
   

3. 返回修改后的文件并注释掉我的p语句，保存文件。

   def define_proxy_call(include_private, mod, name, send, *extra) #:nodoc:
    #p '+++++++++++++++++++++++++++++++++++++++++++++++++++'
   

4. 在rails控制台中运行reload!并重新调用Product.new提供与步骤2相同的输出。退出rails控制台并使用rails c重新启动也会给我同样的结果输出为步骤2.

期望 - 问题

我希望退出rails控制台并重新启动会重新初始化＆＃34; rails加载过程（因此重新加载ActiveModel），似乎并非如此。我发现反映变化的唯一方法是完全退出我的shell。

如果有人可以请解释为什么我必须完全退出shell才能看到我在宝石中所做的更改？难道我不能简单地退出/重新启动rails控制台吗？

我通过略读rails guides得到的印象是，调用rails c会启动启动序列，就像rails s谢谢！

Answer 1

我已经看到此设置会影响该行为：

在config / environments / development.rb

打开

config.eager_load = true