从内部包含模块访问类

我希望能够做到这一点：

class IncludingClass include IncludedModule end module IncludedModule self.parent_class # => IncludingClass, I wish end 

有任何想法吗？ 对不起，简洁。 在手机上打字。 无论如何，我环顾四周并且找不到这个，这对于这样一种可编程语言来说似乎令人惊讶。

Answer 1

我不相信模块会跟踪包含它们的内容。 但是当它们被包含时，它们会触发MyModule.included(SomeClass)方法作为回调，因此您可以自己跟踪。

 module IncludedModule # Array to store included classes @@included_classes = [] # Called when this module is included. # The including class is passed as an argument. def self.included(base) @@included_classes << base end # Getter for class variable def self.included_classes @@included_classes end end # Include the module class IncludingClass include IncludedModule end # Ask the module what included it. puts IncludedModule.included_classes #=> [IncludingClass] 

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可能还有一种方法可以抓取所有已声明的类，并通过SomeClass.included_modules询问它们包含哪些内容，但这有点毛茸茸，并且会慢得多。