猫鼬填充忽略模式 methods.toJSON()

问题描述

我有一个用户架构，它在填充时“忽略”schema.methods.toJSON() - 仅在某些情况下。架构类似于以下内容：

const userSchema = new mongoose.Schema({
    email: {
        type: String,required: true,lowercase: true,unique: true,maxlength: 320
    },name: {
        type: String,trim: true,maxlength: 40
    },.... some other fields ...
   
    notifications: [{
        notification: {
            type: mongoose.Schema.Types.ObjectId,ref: 'Notification',required: true
        }
    }]
})

当用户阅读自己的信息或其他用户的信息时，Schema 有两种方法永远不会显示某些字段。

// don't return password or tokens etc
userSchema.methods.toJSON = function () {
    const userObject = this.toObject()
    delete userObject.password
    delete userObject.tokens
    delete userObject.admin
    delete userObject.email
    delete userObject.notifications
    delete userObject.liked

    return userObject
}


// when user is reading their *own* profile,allow a few more fields
userSchema.methods.toPrivateJSON = function () {
    const userObject = this.toObject()

    delete userObject.password
    delete userObject.tokens
    delete userObject.admin

    return userObject
}

当我按如下方式填充 notifications.notification.from 时（返回一个用户），我会返回每个字段。

router.get('/user',auth,async (req,res) => {
    await req.user.populate('posts.post').execPopulate()
    await req.user.populate('saved.article').execPopulate() 
    await req.user.populate('notifications.notification').execPopulate()
    await req.user.populate('notifications.notification.from').execPopulate() 
    // ^ returns *all* fields that appear in the schema
    // password,admin status etc

    res.send(req.user.toPrivateJSON())
})

我在阅读用户帖子时也以类似的方式填充，但是以下内容不会导致与上述相同的问题。这里密码等按预期删除。

const article = await Article.findOne({ link })

await article.populate('author').execPopulate()
await article.populate('comments.comment').execPopulate()
await article.populate('comments.comment.user').execPopulate() 
// ^ *only* returns expected fields
// password,admin etc are not shown

if (!article) {            
    return res.status(404).send()     
}
res.send(article)

值得注意的是，填充 notifications.notification.from 会忽略 methods.toJSON 和 methodstoPrivateJSON.。我试过在两者之间切换。

解决方法

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