activerecord_one_to_many_author_books_association_sqlite.rb

ruby

This example demonstrates how to define a basic one-to-many re

19d ago31 lines

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activerecord_one_to_many_author_books_association_sqlite.rb
require "active_record"

# This setup is necessary to run the example standalone
ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")

ActiveRecord::Schema.define do
  create_table :authors, force: true do |t|
    t.string :name
    t.timestamps
  end

  create_table :books, force: true do |t|
    t.belongs_to :author
    t.string :title
    t.timestamps
  end
end

# Official Association Quickstart Models
class Author < ActiveRecord::Base
  has_many :books, dependent: :destroy
end

class Book < ActiveRecord::Base
  belongs_to :author
end

# Usage Example:
# author = Author.create(name: "Isaac Asimov")
# book = author.books.create(title: "Foundation")
# puts book.author.name