无法让猫鼬虚拟成为结果对象的一部分 [英] Can't get Mongoose virtuals to be part of the result object

问题描述

b我声明了一个我希望作为其架构查询结果的一部分出现的虚拟，但是当我在对象上执行 console.log 时它没有显示.这是架构:

bI'm declaring a virtual that I want to appear as part of the results of its schema's queries, but it's not showing up when I do a console.log on the object. Here's the schema:

var schema = new mongoose.Schema(
{
    Name: { type: String }
},
{
    toObject: { virtuals: true }
});

schema.virtual("Greet").get(function()
{
    return "My name is " + this.Name;
});

toObject 不应该将虚拟设置为任何查询结果的属性吗?它没有，schema.set("toObject", { virtuals: true }) 也没有.我这样做对吗?

Should that toObject not set the virtual as a property of the results of any queries? It does not, nor does schema.set("toObject", { virtuals: true }). Am I doing this right?

推荐答案

因为您在 console.log 调用中使用了 JSON.stringify，它会调用 JSON.stringify模型实例上的 code>toJSON 方法，而不是 toObject.

Because you're using JSON.stringify in your console.log call, that invokes the toJSON method on the model instance, not toObject.

所以要么在你的调用中省略 JSON.stringify:

So either omit the JSON.stringify in your call:

console.log(results[0]);

或者在架构上设置 toJSON 选项，例如您当前正在设置 toObject 选项.

Or set the toJSON option on the schema like you're currently setting the toObject option.

...
{
    toObject: { virtuals: true },
    toJSON: { virtuals: true }
});

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