猫鼬填充字段，没有ref选项

问题描述

我有3个模式:

var User1Schema = new Schema({
    name: {type:String , trim: true, required: true },
    status: {type:Number, required: true, default:1}
},{collection:"user_1"});

，

var User2Schema = new Schema({
    name: {type:String , trim: true, required: true },
    email: {type: String, required: true, index: {unique: true} },
    status: {type:Number, required: true, default:1}
},{collection:"user_2"});

和

var ConversationSchema = new Schema( {

    participants: [{user:{type: ObjectId, required: true}],
    creator: {type: ObjectId, required: true},

    status: { type:Number, required: true, default:1 }

}, { collection:"conversation" } );

在ConversationSchema中，我有创建者字段，现在有了ref选项，因为它可以是User1Schema或User2Schema的类型.

In ConversationSchema I have creator field whic has now ref option, because it can be type of User1Schema or User2Schema.

如何使用猫鼬填充创建者字段

How can I populate creator field using mongoose

推荐答案

Conversation.find().populate('creator', null, 'User2').exec(callback)

文档尚不清楚.即将更新.

The docs aren't clear. Will update soon.

此外，此语法在v3.6中会更简单.

Also, the syntax for this will be simpler in v3.6.

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