sequelize.sync({force:true}) 不工作，方法的记录为空

Question

我在写这个问题的时候看到了很多问题。 none 他们中有同样的问题，在连续 20 小时试图解决这个问题后，我感到压力很大，如果我没有看到类似的问题，我深表歉意。好的，问题如下：我正在使用 nodejs、expressjs(4.17)、sequelize-cli(6.2.0) 和 sequelizejs(6.3.5) 做服务器并与 mysql(mysql2 2.1.0) 并且出于某种原因，当我使用函数 sequelize.sync()（有或没有 {force:true}）时，它只是不更新已经创建的数据库中的表，它什么都不做，没有错误，没有警告，只是没有做应该做的事情。我使用 npx sequelize model:generate --name ... --attributes ... 创建了模型，因此创建的迁移没有我手动插入的任何内容，因为我搜索了不应该更改迁移文件的内容。然后我运行 npx sequelize db:migrate 开始迁移到数据库，最后对未同步的模型进行了一些更改。

这里是 server.js 代码：

const http = require('http')
const Sequelize = require('sequelize')
const app = require('./src/app')
const port = process.env.PORT || 3000
const server = http.createServer(app)

const contatos = require('./src/_db/models/contatos')
const corretores = require('./src/_db/models/corretores')
const imoveis = require('./src/_db/models/imoveis')
const tipoimovel = require('./src/_db/models/tipoimovel')

const sequelize = new Sequelize(process.env.DB_NAME, process.env.DB_USERNAME, process.env.DB_PASSWORD, {
    host: 'localhost',
    dialect: "mysql" /* one of 'mysql' | 'mariadb' | 'postgres' | 'mssql' */,
    logging: console.log,  
})

sequelize.authenticate().then( () => {
    console.log('Connection has been established successfully.');
    

    sequelize.sync({logging:console.log, force:true})
        .then(() => {
            // console.log(`Database & tables created!`);
            return server.listen(port)
        }).catch((error)=>{
            return console.error(error);
        });

}).catch((error) => {
    console.error('Unable to connect to the database:', error);
})

我的代码app.js:

const express = require('express')
const bodyParser = require('body-parser')
const morgan = require('morgan')
const Sequelize = require('sequelize')
const app = express()

app.use(morgan('dev'))
app.use(bodyParser.urlencoded({ extended: false }))
app.use(bodyParser.json())

app.use((req, res, next) => {
    res.header('Access-Control-Allow-Origin', '*')
    res.header(
        'Access-Control-Allow-Headers',
        'Origin, X-Requested-With, Accept, Authorization'
    )
    if (req.method === 'OPTIONS') {
        res.header('Access-Control-Allow-Methods', 'PUT, POST, PATCH, DELETE, GET')
        return res.status(200).json({})
    }
    next()
})



app.use((req, res, next) => {
    const error = new Error('Not found')
    error.status = 404
    next(error)
})

app.use((error, req, res, next) => {
    res.status(error.status || 500)
    res.json({
        error: {
            message: error.message
        }
    })
})

module.exports = app

全部控制台结果：

[nodemon] restarting due to changes...  
[nodemon] starting 'node server.js'    
Executing (default): SELECT 1+1 AS result     
Connection has been established successfully.     
Executing (default): SELECT 1+1 AS result     
Database & tables created!

最后是我尝试更新数据库的模型示例，已经进行了更改：

'use strict';
const {
  Model
} = require('sequelize');
module.exports = (sequelize, DataTypes) => {
  class tipoImovel extends Model {
    
    static associate(models) {
      // define association here
      this.hasOne(models.Imoveis)
    }
  };
  tipoImovel.init({
    tipoNome: {type:DataTypes.STRING,allowNull:false},
    tipoSigla: {type: DataTypes.STRING(2),allowNull:false,unique:true}
  }, {
    sequelize,
    modelName: 'tipoImovel',
  });
  return tipoImovel;
};

Answer 1

我已经像这样使用了同步，我为我工作，如果你愿意，你可以尝试它作为解决方案

'use strict';
const Sequelize = require('sequelize');
const cls = require('cls-hooked');
const namespace = cls.createNamespace('my-very-own-namespace');
Sequelize.useCLS(namespace);
const config = require("../environments/index");

// server connection settings
var db_instance = new Sequelize(config.DB.database, config.DB.username, config.DB.password, {
  host: config.DB.host,
  dialect: config.DB.dialect,
  define: {
    timestamps: false
  },
  logging: false
});

var sequelize = db_instance;

// checks the database connectivity
sequelize
  .authenticate()
  .then(() => {
    console.log('Connection has been established successfully.');
  })
  .catch(err => {
    console.error('Unable to connect to the database:', err);
  });


const db = {};

db.sequelize = sequelize;
db.Sequelize = Sequelize;

// create the modal instance 
db.users = require('../model/users.model')(sequelize, Sequelize);
db.country = require('../model/country.model')(sequelize, Sequelize);
db.state = require('../model/state.model')(sequelize, Sequelize);
db.city = require('../model/city.model')(sequelize, Sequelize);
db.verify_otp = require('../model/verify_otp.model')(sequelize, Sequelize);
db.organizations = require('../model/organizations.model')(sequelize, Sequelize);
db.features = require('../model/features.model')(sequelize, Sequelize);
db.user_features = require('../model/user_features.model')(sequelize, Sequelize);
db.roles = require('../model/roles.model')(sequelize, Sequelize);
db.user_roles = require('../model/user_roles.model')(sequelize, Sequelize);



db.sequelize.sync({ force: true }).then(() => {
  console.log("Drop and re-sync db.");
});

module.exports = db;

sequelize.sync({force:true}) 不工作，方法的记录为空

sequelize.sync({force:true}) not working and the logging of method is empty

javascript

mysql

node.js

express

sequelize.js