What are the best practices for Active Record validations?

What are the best practices for Active Record validations?

Some best practices include keeping validations simple, using custom validators when necessary, and grouping related validations.

Can you give an example of a custom validator?

Sure! You can create a custom validator by defining a method in your model, like validate :must_be_positive to check if a number is positive.

How do I handle conditional validations?

You can use the if or unless options in your validations to apply them conditionally based on certain attributes.

What about performance considerations?

It's important to avoid complex validations that can slow down your application. Use database constraints for critical checks.