Validator does not run if the field is not provided.

Assume a very simple model:

var user = sequelize.define('user',
  {
    email: {
      type: DataTypes.STRING,
      validate: {
        isEmail: {
          msg: 'Email must be a valid email address'
        },
        notEmpty: {
          msg: 'Email is a required field'
        }
      }
    }
  })

If I do user.create({}) the validation rules in the email does not run. I am wondering why this is? The only thing I can see is, I am missing the schema validator allowNull: true however, this does not return an user friendly error message.

[BridgeAR]

The validations won’t run, since the field is empty and this is a valid entry as long as you do not use allowNull: false (allowNull: true is the default value). So using allowNull: false is fixing your issue.

[loulin]

If allowNull not set, all regular validations will not work for null attributes. But allowNull will add NOT NULL constraint on table schema which I don’t need. So how can I do builtinAttrValidate like notNull if allowNull is not set?