PatrickDePuydt / 011921-SequelizeValiations

Sequelize Validations

https://sequelize.org/master/manual/getting-started.html

Installation

npm install --save sequelize # Install sequelize
npm install --save pg pg-hstore # Install Postgres

---

What is Sequelize

Aka "Model validators" Ways of protecting database data types... Not to be confused with Constraints Model validators allow you to specify format/content/inheritance validations for each attribute of the model.

What are different types of validations?

1. custom/arbitrary
2. built-in

Which ones could be useful?

notEmpty, isEmail, isAlphanumeric, notContains

How do we use validations in sequelize?

class User extends Model {}
User.init({
  name: {
    type: DataTypes.STRING,
    allowNull: false,
    validate: {
      notNull: {
        msg: 'Please enter your name'
      },
      notEmpty: {
        msg: 'Can\'t be empty'
      },
    }
  }
}, { sequelize });