What are the best practices for using Active Record callbacks?

What are the best practices for using Active Record callbacks?

When using Active Record callbacks, it's important to keep them simple and avoid complex logic. Use them for tasks like validations or setting default values.

Can you give me an example of a simple callback?

Sure! A common example is using before_save to set a timestamp before saving a record. For instance, you can set self.updated_at = Time.current.

Are there any pitfalls to avoid with callbacks?

Yes, avoid using callbacks for business logic, as it can make your code harder to understand and maintain. Keep them focused on lifecycle events.

How can I test callbacks effectively?

You can test callbacks by writing unit tests for your models, ensuring that the expected behavior occurs when the callbacks are triggered.