Mongoose是否实际验证了对象ID的存在？

Question

我喜欢Mongoose附带的验证.我们试图弄清楚我们是否想要使用它,并忍受开销.有没有人知道在创建mongoose模式时是否提供对父集合的引用(在子模式中,将父对象的对象id指定为字段),这是否意味着每次您尝试保存文档时检查父集合是否存在refereneced对象id？

Answer 1

我正在使用中间件,在验证时执行元素搜索:

ExampleSchema = new mongoose.Schema({

    parentId: {
        type: mongoose.Schema.Types.ObjectId,
        ref: 'Example'
    }

});

ExampleModel = mongoose.model('Example', ExampleSchema);

ExampleSchema.path('parentId').validate(function (value, respond) {

    ExampleModel.findOne({_id: value}, function (err, doc) {
        if (err || !doc) {
            respond(false);
        } else {
            respond(true);
        }
    });

}, 'Example non existent');

Answer 2

我正在使用mongoose-id-validator.效果很好

var mongoose = require('mongoose');
var idValidator = require('mongoose-id-validator');

var ReferencedModel = new mongoose.Schema({name: String});

var MySchema = new mongoose.Schema({
  referencedObj : { type: mongoose.Schema.Types.ObjectId, ref: 'ReferencedModel'},
  referencedObjArray: [{ type: mongoose.Schema.Types.ObjectId, ref: 'ReferencedModel' }]
});

MySchema.plugin(idValidator);