如何在开发环境中的STI中重新加载app / models / subdirectory中的文件 [英] How to reload files in app/models/subdirectory in dev environment for STI

问题描述

我使用了 Alex Reisner的博客文章。我已经让我的所有子类都使用超类的控制器，并通过序列化/存储来保存额外的属性。我在超类中添加了 model_name 和 self.select_options 方法，以及Alex博客中的预加载初始化程序。我还更改了_form视图助手和属性验证中的 collection_select 以使用 self.select_options 方法。我的所有子类都位于app / models / subfolder的单个文件中，尽管它们的名称空间不像SubFolder :: Subclass。

I implemented STI in one of my models, using some tips from Alex Reisner's blog post. I already had all my subclasses use the superclass's controller, with serialize/store to hold the extra attributes. I added the model_name and self.select_options methods to the superclass, and the preload initializer from Alex's blog. I also changed my collection_select in the _form view helper and attribute validation to use the self.select_options method. All my subclasses are in individual files in a app/models/subfolder, though they're not namespaced like SubFolder::Subclass.

然后我开始遇到问题。更改任何代码后， self.select_options 停止返回所有子类。它仅返回一个小子集或不返回任何子集。因此，由于验证和_form匹配，代码更改后，我无法编辑/更新模型。据我所知，当我更改任何代码时，Rails会重新加载环境，而不是子文件夹中的模型。

Then I start running into problems. Upon changing any code, self.select_options stops returning all of the subclasses. It only returns a small subset or none. Thus due to the validation and _form tie-in, I can't edit/update my models after a code change. From what I could tell, when I change any code, Rails reloads the environment, but not the models in the subfolder.

我尝试将路由添加到config.autoload_paths < a href = https://stackoverflow.com/questions/3356742/best-way-to-load-module-class-from-lib-folder-in-rails-3/9819938#9819938>就像很多人建议的那样，但最终还是没用。

I tried adding the routes to config.autoload_paths like many suggest, but ultimately that didn't work.

所以最终，我想要：

• 可以解决自动加载的问题，因此我不必在每次更改后重新启动服务器


• 将其基于包含所有子项的子目录，以避免手动维护数组


• Rails 3.2.11，ruby 1.9.3p125，ubuntu 12.04.01，rvm

推荐答案

我最终结合了此 answer 和此一个和知识l = nofollow noreferrer>不可思议的底部的博客文章。 config.autoload_paths 似乎从没有帮助过，但我把它们留在了那里。关键部分是初始化程序，该初始化程序需要在启动时重新加载子目录中的所有文件。我在 require_dependency 上尝试了 load ，该方法不起作用。不必每次都重新加载确实很不错。

I ended up combining the code from this answer and this one and knowledge gleaned from the wondible blog posts at the bottom. The config.autoload_paths never seemed to help anything, but I kept them in there. The key part is the initializer that requires all the files in the subdirectory on startup and then at each reload. I tried load over require_dependency, which didn't work. It's definitely been nice not having to reload all the time.

在application.rb

In application.rb

config.autoload_paths += %W(#{config.root}/app/models/configuration)

在开发中。rb

config.autoload_paths += Dir["#{config.root}/app/models/configuration/**"]

在preload_sti_models.rb

In preload_sti_models.rb

if Rails.env.development?
  Dir.entries("#{Rails.root}/app/models/subfolder").each do |c|
    require_dependency File.join("app","models", "subfolder", "#{c}") if c =~ /.rb$/
  end
  ActionDispatch::Reloader.to_prepare do
    Dir.entries("#{Rails.root}/app/models/subfolder").each do |c|
      require_dependency File.join("app","models", "subfolder", "#{c}") if c =~ /.rb$/
    end
  end
end

某些博客文章具有有用的信息

Some blog posts with useful information

1. http： //wondible.com/2012/01/13/rails-3-2-autoloading-in-theory/


2. > http://wondible.com/2011/12/30/rails-autoloading-cleaning-up- the-mess /


3. > http://wondible.com/2011/12/23/give-rails-autoloading-a-boot-to-the-head/


4. http://www.williambharding.com/blog/technology/rails-3-au toload-modules-and-classes-in-production /

1. http://wondible.com/2012/01/13/rails-3-2-autoloading-in-theory/
2. http://wondible.com/2011/12/30/rails-autoloading-cleaning-up-the-mess/
3. http://wondible.com/2011/12/23/give-rails-autoloading-a-boot-to-the-head/
4. http://www.williambharding.com/blog/technology/rails-3-autoload-modules-and-classes-in-production/

编辑：这是已知的东西。

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