What are Sequelize hooks in Node.js?

What are Sequelize hooks in Node.js?

Sequelize hooks are functions that are called before or after certain events in the lifecycle of a model instance, such as create, update, or delete.

Can you give me an example of a beforeCreate hook?

Sure! A beforeCreate hook can be used to hash a password before saving a user to the database. Here's an example:

User.beforeCreate(async (user) => {
  user.password = await hashPassword(user.password);
});

What other types of hooks are available?

Sequelize provides several hooks like beforeUpdate, afterCreate, afterDestroy, and many more, allowing you to customize behavior at various points.

How do I test these hooks?

You can test hooks by creating unit tests that check if the expected behavior occurs when a model instance is created or modified.