Mongoose:类型“Schema”上不存在属性“methods”。你是说“方法”吗？

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

const userSchema = new Schema({
  name: String,
  age: Number
});

// 定义实例方法
userSchema.methods.greet = function() {
  return `Hello, my name is ${this.name} and I am ${this.age} years old.`;
};

const User = mongoose.model('User', userSchema);

// 使用实例方法
const newUser = new User({ name: 'Alice', age: 25 });
console.log(newUser.greet()); // 输出: Hello, my name is Alice and I am 25 years old.

// 定义静态方法
userSchema.statics.findByName = function(name) {
  return this.find({ name: name });
};

// 使用静态方法
User.findByName('Alice').then(users => {
  console.log(users); // 输出找到的用户
});

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

const userSchema = new Schema({
  name: String,
  age: Number
});

// 正确地在Schema实例上定义methods
userSchema.methods.greet = function() {
  return `Hello, my name is ${this.name} and I am ${this.age} years old.`;
};

const User = mongoose.model('User', userSchema);

module.exports = User;