ActiveRecord setup

gistfile1.rb

require 'active_record'

ActiveRecord::Base.establish_connection(
  adapter:  'sqlite3',
  database: ':memory:'
)

ActiveRecord::Schema.define do
  create_table :people do |table|
    table.column :name, :string
    table.column :age, :integer
    table.timestamps
  end
end

ActiveRecord::Schema.define do
  create_table :pets do |table|
    table.column :name, :string
    table.column     :furry, :boolean
    table.belongs_to :person, null: false
    table.timestamps
  end
end

ActiveRecord::Schema.define do
  create_table :addresses do |table|
    table.column :street, :string
    table.column :town, :string
    table.column :city, :string
    table.column :postcode, :string
    table.timestamps
  end
end

ActiveRecord::Schema.define do
  create_table :posts do |table|
    table.column :title, :string
    table.column :body, :string
    table.column :published, :boolean
    table.timestamps
  end
end