auto-generate models for sequelize - node.js

Question

I'm wanting to start using Sequelize, a module that allows ORM for mysql in node.js. I was wondering if it's possible to auto-generate the models like CakePHP does. In CakePHP, it will read the table's info, and automatically create the associations and fields with their types in the model. i'd really hate to have to completely map out all my tables by hand, as some are relatively large. Is there something out there that will do this for me? Or am I on my own to hand-type all the models out?

Answer 1

You can auto generate models through sequelize-auto. Just Follow the following link
https://github.com/sequelize/sequelize-auto
It will generate models of your table.

Answer 2

Now you can use sequelize-automate to generate models automatically. sequelize-auto seems to be unmaintained for a long time, and the package is out-of-date.
$ npm install sequelize-automate
$ ./node_modules/.bin/sequelize-automate --help
For example:
$ ./node_modules/.bin/sequelize-automate -t js -h localhost -d test -u root -p root -o models

Answer 3

Sequelizer - A desktop application to export sequelize models automatically and visually.
Pretty impressive GUI client made with ElectronJS, grab here:
Source: https://github.com/andyforever/sequelizer

Answer 4

You can use a sync method for each of model
example:
Object.keys(db).forEach((modelName) => {
db[modelName].sync().then(result => {
// some logic
}).catch(err => {
// some logic
})
});
the logic will create a new table if the table not exist
full script index.js
'use strict';
const fs = require("fs");
const path = require("path");
const Sequelize = require("sequelize");
const sequelize = new Sequelize(process.env.DB_DATEBASE, process.env.DB_USER, process.env.DB_PASS, {
host: process.env.DB_HOST,
port: process.env.DB_PORT,
dialect: 'mysql',
operatorsAliases: false
});
const db = {};
fs
.readdirSync(__dirname)
.filter((file) => {
return (file.indexOf(".") !== 0) && (file !== "index.js") && (file !== "migrations") && (file !== "redshift-migrations");
})
.forEach((file) => {
const model = sequelize.import(path.join(__dirname, file));
db[model.name] = model;
});
Object.keys(db).forEach((modelName) => {
if ("associate" in db[modelName]) {
db[modelName].associate(db);
}
db[modelName].sync().then(result => {
// some logic
}).catch(err => {
// some logic
})
});
db.sequelize = sequelize;
db.Sequelize = Sequelize;
module.exports = db;
the script takes all files(models) in given directory where you will put the index.js file
the structure looks like here:

Answer 5

Use npm install --save-dev sequelize-cli
Use npm install --save-dev sequelize-auto
npx sequelize-auto -o "./database/models" -d -h localhost -u root -p 3306 -x '' -e mysql

Answer 6

see https://github.com/sequelize/sequelize/issues/339
Sequelize provides methods to read the existing table names of a database. Furthermore there is a method to read the structure of a table. Combined, it should be possible to automate the creation of models.