nxxmdata/bank-backend/models/index.js

/**
 * 模型索引文件
 * @file index.js
 * @description 导出所有模型并建立关联关系
 */
const { sequelize } = require('../config/database');

// 导入所有模型
const User = require('./User');
const Role = require('./Role');
const Account = require('./Account');
const Transaction = require('./Transaction');
const LoanProduct = require('./LoanProduct');
const Employee = require('./Employee');
const Department = require('./Department');
const Position = require('./Position');
const Report = require('./Report');

// 定义模型关联关系

// 用户与角色关联
User.belongsTo(Role, {
  foreignKey: 'role_id',
  as: 'role',
  targetKey: 'id'
});

Role.hasMany(User, {
  foreignKey: 'role_id',
  as: 'users'
});

// 用户与账户关联
User.hasMany(Account, {
  foreignKey: 'user_id',
  as: 'accounts'
});

Account.belongsTo(User, {
  foreignKey: 'user_id',
  as: 'user'
});

// 账户与交易记录关联
Account.hasMany(Transaction, {
  foreignKey: 'account_id',
  as: 'transactions'
});

Transaction.belongsTo(Account, {
  foreignKey: 'account_id',
  as: 'account'
});

// 交易记录与用户关联（通过账户）
// 移除不合理的Transaction->User through Account的belongsTo定义，避免错误外键映射

// 员工与部门关联
Employee.belongsTo(Department, {
  foreignKey: 'department_id',
  as: 'department',
  targetKey: 'id'
});

Department.hasMany(Employee, {
  foreignKey: 'department_id',
  as: 'employees'
});

// 员工与职位关联
Employee.belongsTo(Position, {
  foreignKey: 'position_id',
  as: 'position',
  targetKey: 'id'
});

Position.hasMany(Employee, {
  foreignKey: 'position_id',
  as: 'employees'
});

// 报表与用户关联
Report.belongsTo(User, {
  foreignKey: 'createdBy',
  as: 'creator',
  targetKey: 'id'
});

User.hasMany(Report, {
  foreignKey: 'createdBy',
  as: 'reports'
});

// 导出所有模型和数据库实例
module.exports = {
  sequelize,
  User,
  Role,
  Account,
  Transaction,
  LoanProduct,
  Employee,
  Department,
  Position,
  Report
};