Sequelize create model with beforeCreate hook

Question

I defined my hook beforeCreate as following:

module.exports = function (sequelize, DataTypes) {
  var userSchema = sequelize.define(\'User\', {
  // define..         


        

Answer 1

For newer versions of Sequelize, the hooks no longer have callback functions but promisses. Therefor the code would look more like the following:

userSchema.beforeCreate(function(model, options) {
    debug('Info: ' + 'Storing the password');

    return new Promise ((resolve, reject) => {
        model.generateHash(model.password, function(err, encrypted) {
            if (err) return reject(err);
            debug('Info: ' + 'getting ' + encrypted);

            model.password = encrypted;
            debug('Info: ' + 'password now is: ' + model.password);
            return resolve(model, options);
        });
    });
});

Answer 2

Hooks are called in an asynchronous fashion in Sequelize, so you need to call the completion callback when you're done:

userSchema.beforeCreate(function(model, options, cb) {
  debug('Info: ' + 'Storing the password');    
  model.generateHash(model.password, function(err, encrypted) {
    if (err) return cb(err);
    debug('Info: ' + 'getting ' + encrypted);

    model.password = encrypted;
    debug('Info: ' + 'password now is: ' + model.password);
    return cb(null, options);
  });
});

(alternatively, you can return a promise from the hook)