Relationships

Introduction

ActiveRecord allows you to define and work with relationships between database tables. These relationships mirror real-world associations, such as a User having many Posts or a Product belonging to many Categories.

Types of Relationships

There are three main types of relationships in ActiveRecord:

One-to-One: A record in one table is associated with one record in another table.

One-to-Many: A record in one table is associated with multiple records in another table.

Many-to-Many: Records in one table are associated with multiple records in another table, and vice versa.

Defining Relationships

To define relationships, you'll need to set up relationships between ActiveRecord models using static properties like belongs_to, has_many, and has_and_belongs_to_many.