javascript - AuthenticationController 总是抛出错误，TypeError : Cannot read property 'create' of undefined

Question

我对与 sequelize 和 sqlite 一起使用的 Authenticati onController 有问题
当我使用 postman 测试 POST 请求时，它总是给出状态 400 的响应
{
错误:'出了点问题'
}

这是日志
::1 - - [21/Jul/2020:15:40:33 +0000] "POST/register HTTP/1.1"400 30 "-""PostmanRuntime/7.26.1"

这是AuthenticationController的代码

const {User} = require('../models')
module.exports = {
    async register(req, res){
        try {   
            const user = await User.create(req.body)
            res.send(user.toJSON())
        } catch (error) {
            console.log(error)
            res.status(400).send({
                error: 'Something is wrong'
            })
        }
    }
}

用户型号代码

module.exports = (sequelize, DataTypes) =>
sequelize.define('User', {
    email: {
        type: DataTypes.STRING,
        unique: true
    },
    password: DataTypes.STRING
})

型号索引代码

const fs = require('fs')
const path = require('path')
const Sequelize = require('sequelize')
const config = require('../config/config')
const db = {}

const sequelize = new Sequelize(
  config.db.database,
  config.db.user,
  config.db.password,
  config.db.options
)
fs
    .readdirSync(__dirname)
    .filter((file)=>{
        file != 'index.js'
    })
    .forEach((file)=>{
        const model = require(path.join(__dirname, file))(
          sequelize,
          Sequelize.DataTypes
        );
        // const model = sequelize.import(path.join(__dirname,file))
        db[model.name] = model
    })
    db.sequelize = sequelize
    db.Sequelize = Sequelize

module.exports = db

路线代码

const AuthenticationController = require('./controllers/AuthenticationController');

module.exports = (app) => {
    app.post('/register',
     AuthenticationController.register)
}

早些时候，它抛出了一个错误“类型错误:无法读取未定义的属性‘创建’”
但是当我重新启动服务器时，问题就解决了。但是我不知道为什么 try 块会失败。
任何人都可以对此有所了解吗？谢谢

Answer 1

最后，谢天谢地，它被修复了!
这是/models/index.js 的修订代码

const fs = require('fs')
const path = require('path')
const Sequelize = require('sequelize')
const config = require('../config/config')
const db = {}

const sequelize = new Sequelize(
  config.db.database,
  config.db.user,
  config.db.password,
  config.db.options
)
fs.readdirSync(__dirname)
    //   .filter((file) => {
    //     file != "index.js";
    //   })
  .filter(
    (file) =>
      file.indexOf(".") !== 0 && file !== "index.js" && file.slice(-3) === ".js"
  )
  .forEach((file) => {
    const model = require(path.join(__dirname, file))(
      sequelize,
      Sequelize.DataTypes
    );
    // const model = sequelize.import(path.join(__dirname,file))
    db[model.name] = model;
  });
    db.sequelize = sequelize
    db.Sequelize = Sequelize

module.exports = db

过滤器块已更新如修订所示，在链接的帮助下
https://www.codota.com/code/javascript/functions/sequelize/Sequelize/import
改变的两件事是

将 'sequelize.import' 替换为 'require'

更新了“过滤器”块，如图所示。

这是结果

感谢 crumkev 的洞察力，让我找到了答案。我希望这对可能遇到类似问题的其他人有所帮助。