What are Sequelize model hooks and how do I use them?

What are Sequelize model hooks and how do I use them?

Sequelize model hooks are functions that are called before or after certain events in the lifecycle of a model instance. They allow you to add custom behavior at specific points, such as before creating or updating a record.

Can you give me an example of a beforeCreate hook?

Sure! Here's an example:

User.beforeCreate((user, options) => {
  user.password = hashPassword(user.password);
});

This hook hashes the user's password before the user is created.

What other types of hooks are available?

Sequelize provides several hooks, including:

• beforeValidate
• afterValidate
• beforeSave
• afterSave
• beforeDestroy
• afterDestroy You can use these hooks to perform actions at different stages of the model's lifecycle.

How do I test if my hooks are working?

You can test hooks by creating or updating a model instance and checking if the expected behavior occurs. For example, log messages in the hooks to see if they are triggered.