Sequelize JSON data type

Question

I have defined a model as

module.exports = function (sequelize, DataTypes) {
  const MyModel = sequelize.define(\'MyModel\', {
    data: {
      type: DataTypes         


        

Answer 1

The easiest solution is to use this little library called sequelize-json

Create a database and a Schema:

var Sequelize = require('sequelize'),
  JsonField = require('sequelize-json'),
  db,
  User;

db = new Sequelize('database', 'username', 'password', {
  dialect: 'sqlite',
  logging: false
});

User = db.define('User', {
  username: Sequelize.STRING,
  jsonField: JsonField(db, 'User', 'jsonField')
});

Note the parameters of JsonField, you pass your Sequelize instance, the name of the model, and the name of the field. A little awkard, but this is needed in order to add the proper hooks to the model instance.

Now, you can always treat that field as a json object:

User.create({
      username: 'Scott',
      jsonField: {
        likes: ['running', 'node']
      }
    })
    .then(function(user) {
      user.jsonField.likes.push('tests');
      return user.save();
    })
    .then(function(user) {
      expect(user.jsonField).to.be.a('object');
      expect(user.jsonField.likes).to.have.length(3);
    });

It will work with normal save commands, as well as updateAttribute commands.