Fast Active Record Setup

Was doing some prototyping today that required some deeper knowledge of how active record transactions work. From doing my spike I found a great light weight setup to tinker around with Active Record and felt it should be shared.

require 'active_record'

 
ActiveRecord::Base.logger = Logger.new(STDERR)

 
ActiveRecord::Base.establish_connection(

  :adapter => "sqlite3",

  :database => ":memory:"

)

 
ActiveRecord::Schema.define do

  create_table :widgets do |table|

    table.column :name, :string

  end

 
  create_table :bits do |table|

    table.column :widget_id, :integer

    table.column :name, :string

  end

end

 
class Widget < ActiveRecord::Base

  has_many :bits

end

 
class Bit < ActiveRecord::Base

  belongs_to :widget, touch: true

end

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