在我的应用程序中找到所有蒙古型模型名称 [英] Find all the mongoid model names in my application

问题描述

有没有办法在我的rails应用程序中找出所有Mongoid模型名称.我可以通过将所有文件放到我的app/models文件夹中找到所有模型，但是我特别想要蒙古模型名称.

Is there a way to find out all the Mongoid Models names in my rails app. I can find all the models just by getting all the file inside my app/models folder but i specifically want mongoid model names.

推荐答案

如果已经加载了模型类，则可以通过找到所有包含Mongoid :: Document模块的类来列出它们.

If your model classes are already loaded then you could list them by finding all the classes that include the Mongoid::Document module.

Object.constants.collect { |sym| Object.const_get(sym) }.
  select { |constant| constant.class == Class && constant.include?(Mongoid::Document) }

或者如果您只想要类名:

or if you just want the class names:

Object.constants.collect { |sym| Object.const_get(sym) }.
  select { |constant| constant.class == Class && constant.include?(Mongoid::Document) }.
  collect { |klass| klass.name }

如果需要在运行之前强制加载模型，可以这样做(在Rails 3中):

If you need to force your models to load before running this you can do so like this (in Rails 3):

Dir["#{Rails.root}/app/models/**/*.rb"].each { |path| require path }

(假设所有模型都在app/models或子目录中)

(assuming all of your models are in app/models or a sub-directory)

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