时间:2021-07-01 10:21:17 帮助过:174人阅读
例如:
app/model/user.js
/** * 用户模型 */ module.exports = app => { const { STRING, INTEGER } = app.Sequelize; const User = app.model.define(‘user‘, { id: { type: INTEGER, autoIncrement: true, primaryKey: true }, name: { type: STRING, allowNull: false }, password: { type: STRING(32), allowNull: false } }); // 表关联的字段 User.associate = function() { // 一对多 app.model.User.hasMany(app.model.Diary, { foreignKey: ‘user_id‘, targetKey: ‘id‘}) } return User; }
app/model/diary.js
/** * 日志模型 */ module.exports = app => { const { STRING, INTEGER } = app.Sequelize; const Diary = app.model.define(‘diary‘, { id: { type: INTEGER, autoIncrement: true, primaryKey: true }, title: { type: STRING, allowNull: false }, content: { type: STRING, allowNull: false } }); // 表关联的字段 Diary.associate = function() { app.model.Diary.belongsTo(app.model.User, { foreignKey: ‘user_id‘, targetKey: ‘id‘}) } return Diary; }
在 controller 中调用 model:
app/controller/home.js
‘use strict‘; const Controller = require(‘egg‘).Controller; class HomeController extends Controller { async index() { const { ctx } = this; ctx.body = ‘hi, egg‘; } // 添加日志 async add() { const { ctx } = this; // 从前端获取post请求发来的数据 const param = ctx.request.body; const result = await ctx.model.Diary.create({ title: param.title, content: param.content, user_id: 2 }); console.log(‘add方法‘, result); if(result){ ctx.body = ‘创建成功‘; }else{ ctx.body = ‘创建失败‘; } } // 登录判断 async loginCheck() { const { ctx } = this; // // 关联查询 // const data = await ctx.model.User.findAll({ // include: { // model: ctx.model.Diary // } // }); // ctx.body = data; // post请求传来的参数 const { name, password } = ctx.request.body; let message = ‘‘, data = {}; // 判断数据库里面是否存在该用户 const user = await ctx.model.User.findOne({ where: { name: name } }); if(!user){ message = ‘用户不存在‘; }else if(password !== user.password){ message = ‘密码错误‘; }else{ message = ‘登录成功‘; data = { id: user.id }; } ctx.body = { message, data }; } } module.exports = HomeController;
注:Field ‘id‘ doesn‘t have a default value 解决方案
原因 id 没有设置自动递增
使用EggJS开发接口(二)使用数据库之egg-sequelize
标签:ase 否则 database src script foreign iar top update