associations_basics

🔗 Set Up Associations with has_many and belongs_to

Associations let you connect models and fetch related records effortlessly. Use belongs_to on the child model and has_many on the parent. Rails will auto-generate helper methods for easy traversal.

class Author < ApplicationRecord
  has_many :books
end

class Book < ApplicationRecord
  belongs_to :author
end

# Fetch an author's books
author = Author.find(1)
author.books