sequelize 定义关联时出现错误

问题描述

我正在尝试定义 sequelize 关联，但在定义 hasMany 关系时出错

error throw new Error(${this.name}.hasMany called with something that's not a subclass of Sequelize.Model);

account 和 account_type 的一对多关系在哪里

1. account_type has many account
2. account belongs to account_type

这是我的代码

models/account.js

const Sequelize = require('sequelize');
const sequelize = require('../../helper/dbConnection');

const accountType = require('./accountType');

const account = sequelize.define('account',{
  id: {
    primaryKey: true,allowNull: true,autoIncrement: true,type: Sequelize. INTEGER,},account: {
    allowNull: false,unique: true,type: Sequelize.STRING
  },nominal: {
    allowNull: false,type: Sequelize.DOUBLE,description: {
    allowNull: true,type: Sequelize.TEXT,type_id: {
    allowNull: false,type: Sequelize.INTEGER,references: {
      model: 'account_type',key: 'id'
    },onUpdate: 'cascade',onDelete: 'cascade'
  },is_deleted: {
    allowNull: false,default: false,type: Sequelize.BOOLEAN,created_at: Sequelize.DATE,updated_at: Sequelize.DATE,});

account.belongsTo(accountType,{ foreignKey: 'type_id' });

module.exports = account;

models/accountType.js

const Sequelize = require('sequelize');
const sequelize = require('../../helper/dbConnection');

const account = require('./account');

const accountType = sequelize.define('account_type',{
  id: {
    allowNull: false,primaryKey: true,type: Sequelize.INTEGER
  },type: {
    allowNull: false,type: Sequelize.STRING,type: Sequelize.TEXT
  },parent_id: {
    allowNull: true,});

accountType.hasMany(account);

module.exports = accountType;

我已经尝试按照文档进行操作，但出现错误，我真的卡住了，请任何人帮助我

解决方法

感谢sir ankh，这段代码存在循环依赖问题

解决方案只是在 1 个文件中定义关联，在 models/account.js 或 models/accountType.js 中