猫鼬模式安全字段 [英] Mongoose Schema secured field

问题描述

简短明了:有什么方法可以阻止设置架构字段，但允许获取值?

Short and clear: is there any way to prevent setting a schema field but allowing to get the value?

我一直在猫鼬文档周围，但是找不到我想要的东西.

I've been around the Mongoose Documentation but can't find what I'm looking for.

推荐答案

将字段定义为虚拟吸气剂，而不是传统领域.

Define the field as a virtual getter instead of a traditional field.

例如，假设您想通过Mongoose访问集合的pop字段为只读:

For example, say you wanted to make the pop field of your collection read-only when accessed via Mongoose:

var schema = new Schema({
    city: String,
    state: String
});

schema.virtual('pop').get(function() {
    return this._doc.pop;
});

通过访问模型实例的私有_doc成员，有可能在将来打破这种情况，但是当我刚刚对其进行测试时，这种方法可以正常工作.

By accessing the private _doc member of your model instance it's possible this may break in the future, but this worked fine when I tested it just now.

这篇关于猫鼬模式安全字段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！