What are the basics of ActiveRecord in Ruby on Rails?

What are the basics of ActiveRecord in Ruby on Rails?

ActiveRecord is the ORM layer in Ruby on Rails that facilitates database interactions. It allows you to create, read, update, and delete records easily.

How do I create a new record using ActiveRecord?

You can create a new record by using the create method. For example, User.create(name: 'John Doe', email: '[email protected]').

What about querying records?

You can query records using methods like where, find, and all. For instance, User.where(active: true) retrieves all active users.

Can I update a record after creating it?

Yes, you can update a record by finding it first and then using the update method. For example, user.update(name: 'Jane Doe').

What if I want to delete a record?

To delete a record, you can use the destroy method. For example, user.destroy will remove the user from the database.