读取 Rails 应用程序中的所有模型 [英] Reading all models in a Rails application

问题描述

有没有办法检测 Rails 应用程序中使用的所有具有数据库表的模型?我试图通过读取 app/models 目录中的所有模型并简单地读取该目录中的所有文件来检测 Rails 应用程序中的所有模型.但是，我认为这不是最好的方法，并且花了大量时间对此进行研究，但我还没有得到更好的答案.谁能帮我这个.非常感谢！

Is there a way to detect all the models used in a Rails app that have database tables? I've tried to detect all models in a Rails application by reading all the models off of the app/models directory and simply read all the files in that directory. However, I do not think this is the best approach and have spent a considerable amount of time researching this but I haven't gotten a better answer yet. Can anyone help me with this. Many thanks!

推荐答案

我假设您正在使用 ActiveRecord.如果是，请按照以下步骤获取所有 ActiveRecord::Base 子类的列表:

I'm assuming you are using ActiveRecord. If you are, here is how you go about getting a list of all ActiveRecord::Base subclasses:

ActiveRecord::Base.subclasses

您还可以执行以下操作:

You can also do the following:

dbmodels = []
ObjectSpace.each_object(Module){ |m| dbmodels << m if m.ancestors.include?(ActiveRecord::Base) && m != ActiveRecord::Base }

dbmodels 现在应该包含所有 ActiveRecord::Base 模型.

dbmodels should now contain all your ActiveRecord::Base models.

请记住，在您的开发环境中，除非已加载/使用子类，否则您不会获得完整的子类列表，因此我建议您在生产环境中执行此操作，这样您就可以确保所有模型已加载.

Keep in mind that in your development environment you won't get a full list of subclasses unless they have been loaded/used, so I would recommend performing this in your production environment instead, that way you can ensure that all your models have been loaded.

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