Django有一个叫收藏者类。 Django在执行模型删除时使用它。它的作用似乎是你想要的。通过调用 collect（），它会在模型​​图中找到对对象的所有引用。此外，它还提供了一种删除所有找到的对象的方法，一个 delete（）调用。

Django has something called Collector class. It is used by Django when performing a model deletion. What it does seems like exactly what you want. By calling collect() it finds all the references to the object in the model graph. Additionally it offers a way to delete all the found objects, with a delete() call.

说我从来没有使用过这个类，我只知道它存在。 API有点复杂，但如果您愿意一点点挖掘Django的内部结构，那么可能会为您节省大量的编码。

That said I've never used this class myself, I just know it exists. The API is somewhat convoluted, but if you're willing to dig into the internals of Django a little bit, it might save you a lot of coding.