貓鼬預保存未與區分符一起運行

Question

我試圖在將所有者保存在貓鼬之前調用pre save hook。 不調用預保存鈎子。 有什么辦法嗎？

const baseOptions = {
    discriminatorKey: '__type',
    collection: 'users'
}
const Base = mongoose.model('Base', new mongoose.Schema({}, baseOptions));

const Owner = Base.discriminator('Owner', new mongoose.Schema({
    firstName: String,
    email: String,
    password: String,

}));

const Staff = Base.discriminator('Staff', new mongoose.Schema({
    firstName: String,     
}));

這不叫

 Owner.schema.pre('save', function (next) {
    if (!!this.password) {
        // ecryption of password
    } else {
        next();
    }
})

Answer 1

在編譯模型之前，需要將AFAIK掛鈎添加到架構中，因此這是行不通的。

但是，您可以先為鑒別器創建模式，然后定義鈎子，然后最后根據基本模型和模式創建鑒別器模型。 請注意，對於區分符掛鈎，也將調用基本架構掛鈎。

更多詳細信息在貓鼬文檔的此部分中：

MongooseJS鑒別器復制鈎子

對於您的情況，我相信這會起作用：

const baseOptions = {
    discriminatorKey: '__type',
    collection: 'users'
}
const Base = mongoose.model('Base', new mongoose.Schema({}, baseOptions));

// [added] create schema for the discriminator first
const OwnerSchema = new mongoose.Schema({
    firstName: String,
    email: String,
    password: String,
});

// [moved here] define the pre save hook for the discriminator schema
OwnerSchema.pre('save', function (next) {
    if (!!this.password) {
        // ecryption of password
    } else {
        next();
    }
})

// [modified] pass the discriminator schema created previously to create the discriminator "Model"
const Owner = Base.discriminator('Owner', OwnerSchema);

const Staff = Base.discriminator('Staff', new mongoose.Schema({
    firstName: String,     
}));