sequelize.import出错：defineCall不是函数

Question

我得到的错误是：

C:\Users\brend\project\server\node_modules\sequelize\lib\sequelize.js:392
      this.importCache[path] = defineCall(this, DataTypes);
                               ^
TypeError: defineCall is not a function
    at Sequelize.import (C:\Users\brend\project\server\node_modules\sequelize\lib\sequelize.js:392:32)
    at fs.readdirSync.filter.forEach (C:\Users\brend\project\server\src\models\index.js:20:35)

我在学习节点，vue和一堆图书馆的时候，我还没有能够解决这个问题。

index.js如下：

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 = sequelize.import(path.join(__dirname), file)
    db[model.name] = model
  })

db.sequelize = sequelize
db.Sequelize = Sequelize

module.exports = db

这是我的User.js，这是我目前唯一的模型：

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

如有必要，我的文件夹结构：

-src
--app.js
--routes.js

--config
----config.js

--controllers
----AuthenticationController.js

--models
----index.js
----User.js

还有我的app.js sequelize.sync()中未定义的内容，至少是我的IDE所指示的内容。

Answer 1

我在github sequelize github上找到了，替换

const model = sequelize.import(path.join(__dirname, file));

使用

var model = require(path.join(__dirname, file))(sequelize, Sequelize.DataTypes);

它对我来说适用于sequelize 6.3.0

Answer 2

sequelize.6中不推荐使用

sequelize.import。在那里 直到v5

https://sequelize.org/master/manual/upgrade-to-v6.html#sequelize https://sequelize.org/master/manual/models-definition.html

原文：

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 = sequelize.import(path.join(__dirname), file) // error occurs here
    db[model.name] = model
  })

db.sequelize = sequelize
db.Sequelize = Sequelize

module.exports = db

现在开始v6 +的后续版本，我们不能使用sequelize.import。

因此请在forEach中进行以下更改

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) => {
    /**
     * Choose any one of the below definition for model variable 
     */
    // for individual model files having `export default (sequelize, DataTypes) => {`    
    const model = require(path.join(__dirname, file)).default(sequelize, Sequelize.DataTypes); 
    // for individual model files having `module.exports = (sequelize, DataTypes) => {`    
    const model = require(path.join(__dirname, file))(sequelize, Sequelize.DataTypes);
    db[model.name] = model;
  })

db.sequelize = sequelize
db.Sequelize = Sequelize

module.exports = db

注意事项：

• 如果在模型文件中同时使用export default ...和babel->我们正在使用require(...).default

• as require(...)不会返回函数，而是返回对象为{ default: [Function] }并因此使用它的属性'default'

Answer 3

“ sequelize.import”已被弃用。您应该改用“ require”。

请参阅上面的 artfulbeest 解决方案。它对我有用。

更多内容请阅读官方文档（https://sequelize.org/master/manual/models-definition.html）

Answer 4

检查您正在使用的续集的版本。当我使用sequelize@6.0.0-beta.6并发现序列对象/客户程序中缺少import时，我遇到了持续的错误：

npm卸载续集

npm install sequelize

Answer 5

<强>尝试：

<强>模型/ index.js：

...

fs
    .readdirSync(__dirname)
    .filter((file) => {
        return (file.indexOf(".") !== 0) && (file !== "index.js");
    })
    .forEach((file) => {
        const model = sequelize.import(path.join(__dirname, file));
        db[model.name] = model;
    });

    Object.keys(db).forEach((modelName) => {
        if (db[modelName].associate) {
            db[modelName].associate(db);
        }
    });
...

models / user.js：（我用小写字母）

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

  return User;
}

致电model.user：

const model = require('./models'); // Change path if is necesary
model.user.create({ ...

Answer 6

这是续集的解决方案”：“ ^ 6.3.4 替换

const model = sequelize.import(path.join(__dirname, file));

使用

const model = require(path.join(__dirname, file))(sequelize, Sequelize);