如何在子集合中创建虚拟对象 - Mongoose

Question

在 mongoose 中，我有一个带有图像（名称+分机号）的对象 ('target')。每个对象 ('target')。有一个其他对象的子集合，该子集合再次包含图像（名称+分机）。

现在我已经能够为 target.image 创建虚拟机了。所以我得到了一个完整的位置 URL。但是我无法为 target.upload.image.

创建虚拟

我该怎么做？

const targetSchema = mongoose.Schema({
    title: {
        type: String, required: true
    },
    userId: {
        type: String, required: true
    },
    ........
    image: {
        type: String, required: true
    },
    uploads: [{
        upload_image: {
            type: String, required: true
        },
        upload_userId: {
            type: String, required: true
        },
    }],
});

这是我的目标图像虚拟

targetSchema.virtual('targetImgURL').get(function(){
    let url = process.env.URL + ":" + process.env.PORT + "/public/images/targets/uploads/" + this.image
    return url
});

Answer 1

是的，我找到了解决方案。不幸的是，不可能一下子扣留所有东西。但是这种方式并不会特别麻烦。解决方法见下方代码。

const uploadSchema = mongoose.Schema({
    upload_image: {
        type: String, required: true
    },
    upload_userId: {
        type: String, required: true
    },
});

// Virtuals
uploadSchema.virtual('UploadImgURL').get(function(){
    let url = process.env.URL + ":" + process.env.PORT + "/public/images/targets/answers/" + this.image
    return url
});

const targetSchema = mongoose.Schema({
    title: {
        type: String, required: [true, 'A title is required']
    },
    ....
    uploads: [ uploadSchema ],
});

// Virtuals
targetSchema.virtual('targetImgURL').get(function(){
    let url = process.env.URL + ":" + process.env.PORT + "/public/images/targets/uploads/" + this.image
    return url
});

如何在子集合中创建虚拟对象 - Mongoose

How to make a virtual object in a subcollection - Mogoose

javascript

mongoose

mongodb

node.js

mongoose-schema