Mongoose toObject和toJSON有什么区别?

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问题描述

toObject的Mongoose文档列出了功能，选项并提供了示例toObject的功能.

The Mongoose documentation for toObject lists features, options, and gives examples of functionality of toObject.

toJSON的Mongoose文档说这些选项与toObject相同，但是没有解释toJSON的作用. 文档说的其他地方

The Mongoose documentation for toJSON says the options are the same as toObject, but doesn't explain what toJSON does. Elsewhere the documentation says

toJSON是toObject的别名吗?如果没有，有什么区别?

Is toJSON an alias of toObject? If not, what are the differences?

推荐答案

看看源代码揭示了这两种方法都调用内部的$toObject方法，但是toJSON传递了第二个true参数:

A look at the source code reveals that both methods call an internal $toObject method, but with toJSON passing a second, true parameter:

Document.prototype.toObject = function (options) {
  return this.$toObject(options);
};
...
Document.prototype.toJSON = function (options) {
  return this.$toObject(options, true);
};

第二个参数确定$toObject是使用toJSON还是toObject架构选项作为默认值.因此，除非这些架构选项的配置不同，否则这两种方法是相同的.

That second parameter determines whether $toObject uses the toJSON or toObject schema options for its defaults. So unless those schema options are configured differently, the two methods are identical.

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ToObject