NestJS导入Mongoose Schema报错：TypeError: Cannot read properties of undefined (reading 'tree')

问题代码与错误信息 #

成员地址Schema代码 #

import * as mongoose from "mongoose";

export const memberAddressSchema = new mongoose.Schema({
  mumber_id: { type: String, required: true },
  city_id: { type: String, required: true },
  state_id: { type: String, required: true },
  pincode: { type: String, required: true },
  address: { type: String, required: true },
});

错误信息 #

无法读取未定义的属性（读取'tree'）
TypeError: Cannot read properties of undefined (reading 'tree')

AdminModule代码 #

@Module({
    imports:[MongooseModule.forFeature([{name:'Admin', schema:adminSchema},{name:'Member',schema:memberAddressSchema}])],
    providers:[AdminService,MemberAddressService],
    
    exports:[AdminService,MemberAddressService]
})
export class AdminModule{}

解决步骤 #

• 修正模型名称与Schema的对应关系
  当前你将memberAddressSchema绑定到了'Member'模型名称上，语义不匹配且会引发内部处理错误。需将模型名称改为与Schema对应的'MemberAddress'：

  @Module({
      imports:[MongooseModule.forFeature([
        {name:'Admin', schema:adminSchema},
        {name:'MemberAddress', schema:memberAddressSchema} // 修正模型名称
      ])],
      providers:[AdminService,MemberAddressService],
      exports:[AdminService,MemberAddressService]
  })
  export class AdminModule{}
  

• 确认Schema的导入正确性
  检查AdminModule中memberAddressSchema的导入语句，确保文件路径、导出名称完全匹配，没有拼写错误。例如：

  // 根据实际文件路径调整导入语句
  import { memberAddressSchema } from './schemas/member-address.schema';
  

• 修正Schema中的拼写错误（可选但建议）
  Schema内的mumber_id应为member_id，虽然这不是触发当前错误的原因，但修正后能避免后续业务逻辑问题：

  export const memberAddressSchema = new mongoose.Schema({
    member_id: { type: String, required: true }, // 修正拼写
    city_id: { type: String, required: true },
    state_id: { type: String, required: true },
    pincode: { type: String, required: true },
    address: { type: String, required: true },
  });
  

内容的提问来源于stack exchange，提问作者jaswant patel