ActiveRecord

What problem does it solve?

This Skill simplifies complex database operations within Rails applications, making it easier to manage data integrity and performance.

Core Features & Use Cases

• Migrations: Write and manage database schema changes safely.
• Associations: Define relationships like belongs_to, has_many, and has_many :through.
• Query Optimization: Prevent N+1 queries using includes, preload, and eager_load.
• Use Case: You need to add a new column to your users table, ensure it's always present, and create a unique index on it for faster lookups.

Quick Start

Use the ActiveRecord skill to add a status column of type string to the orders table with a default value of 'pending'.