sequelize.import is not a function

问题

I'm new to express.

I want to import files to sequelize and declared:

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

                             ^

It returned the following type error

TypeError: sequelize.import is not a function

And then, edited code to

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

                                         ^

Then the error is:

TypeError: require(...) is not a function

I think it is the error in importing stuff....

Here is my whole file code:

const fs = require('fs');

const path = require('path');

const Sequelize = require('sequelize');

const config = require('../config/config');

const db = {}

var __dirname = path.resolve();


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))

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

        db[model.name] = model

    })


db.sequelize = sequelize
db.Sequelize = Sequelize

module.exports = db

回答1:

The error is caused by using the sequelize import object. Instead you should use Node's built in CommonJS require function. So change this line in your models/index.js:

const model = sequelize['import'](path.join(__dirname, file))

to:

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

You can also just regenerate the models directory and readd your models without the old index.js if you find that easier:

mv models models.bak && sequelize init:models && mv models.bak/index.js models.bak/index.js.bak && mv models.bak/* models/ && rm models.bak

That one liner will fix your problem if you have sequelize-cli installed globally. If you don't you can use this one:

npm i --save-dev sequelize-cli && mv models models.bak && npx sequelize init:models && mv models.bak/index.js models.bak/index.js.bak && mv models.bak/* models/ && rm models.bak

You may also need to update your config folder. I use a JavaScript config to inject ENVs, so I had to add to change my const config = require(... line to reflect that. If you used one of my one liners your old models/index.js file is now at index.js.bak if you need to grab any custom stuff from it.

回答2:

As of now I was able to fix the issue by downgrading the sequelize module version in your package.json to "sequelize": "^5.22.3",. do let me know if it is also fixed on your side.

Edit: any sequelize version under < 6.0.0 should work as normal

回答3:

Check if you have exported the model using old JavaScript syntax.

In my case, it was enough to change the code from:

export default (sequelize, DataTypes) => {
    ...
}

module.exports = (sequelize, DataTypes) => {
    ...
}

来源：https://stackoverflow.com/questions/62917111/sequelize-import-is-not-a-function

标签

node.js

sequelize.js