Monggose数组架构类型不能传递多个项目

const mongoose = require('mongoose');

const ItemSchema = new mongoose.Schema({
  name: String,
  description: String
});

const ProjectSchema = new mongoose.Schema({
  name: String,
  items: [ItemSchema]
});

const Project = mongoose.model('Project', ProjectSchema);

// 创建一个包含多个项目的文档
const project = new Project({
  name: 'My Project',
  items: [
    { name: 'Item 1', description: 'Description 1' },
    { name: 'Item 2', description: 'Description 2' },
    // 可以继续添加更多项目
  ]
});

// 保存文档到数据库
project.save();

const mongoose = require('mongoose');

const ItemSchema = new mongoose.Schema({
  name: String,
  description: String
});

const ProjectSchema = new mongoose.Schema({
  name: String,
  items: [{ type: mongoose.Schema.Types.ObjectId, ref: 'Item' }]
});

const Item = mongoose.model('Item', ItemSchema);
const Project = mongoose.model('Project', ProjectSchema);

// 创建多个项目
const item1 = new Item({ name: 'Item 1', description: 'Description 1' });
const item2 = new Item({ name: 'Item 2', description: 'Description 2' });
// 可以继续创建更多项目

// 保存项目到数据库
item1.save();
item2.save();

// 创建一个包含多个项目引用的文档
const project = new Project({
  name: 'My Project',
  items: [item1._id, item2._id]
  // 可以继续添加更多项目引用的_id
});

// 保存文档到数据库
project.save();