你如何从猫鼬中删除模型？ [英] How do you remove a model from mongoose?

问题描述

我并不是指删除文件或文件。我的意思是完全删除模型，以便猫鼬不再意识到它。在声明模型之后，我无法弄清楚如何让mongoose忘记该模型以便可以重新创建它。

I don't mean remove a document or documents. I mean remove the model entirely so that mongoose is no longer aware of it. After declaring a model I can't figure out how to make mongoose forget that model so that it could be recreated.

mongoose.model('Book', bookSchema);
mongoose.model('Book', bookSchema);

目前上述情况引发异常。

Currently the above throws an exception.

OverwriteModelError：编译后无法覆盖'Book'模型。

OverwriteModelError: Cannot overwrite 'Book' model once compiled.

我希望能做到像这样......

I'd like to be able do something like this...

mongoose.model('Book', bookSchema);
mongoose.removeModel('Book');
mongoose.model('Book', bookSchema);

...并且不会收到任何错误。任何想法？

...and not get any errors. Any ideas?

推荐答案

试试这个

delete mongoose.connection.models['Book'];

然后重新注册/重新初始化它。它会正常工作

and then re-register/re-initialize it . it will work fine

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