Question

我试图在将所有者保存在猫鼬之前调用pre save钩子。不调用预保存钩子。有什么办法吗？

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,     
}));

这不叫

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

Answer 1

在编译模型之前，需要先将AFAIK挂钩添加到您的架构中，因此这将无法正常工作。

但是，您可以先为鉴别器创建模式，然后定义钩子，然后最后根据基本模型和模式创建鉴别器模型。请注意，对于区分符挂钩，也会调用基本架构挂钩。

猫鼬文档的这一部分提供了更多详细信息：

MongooseJS Discriminators Copy Hooks

对于您的情况，我相信这会起作用：

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,     
}));

猫鼬预保存未与区分符一起运行

1 个答案: