Class: CreateVersionAssociations

Inherits:
ActiveRecord::Migration
  • Object
show all
Defined in:
lib/generators/paper_trail/templates/create_version_associations.rb

Overview

This migration and AddTransactionIdColumnToVersions provide the necessary schema for tracking associations.

Class Method Summary collapse

Class Method Details

.down ⇒ Object 



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# File 'lib/generators/paper_trail/templates/create_version_associations.rb', line 16

def self.down
  remove_index :version_associations, [:version_id]
  remove_index :version_associations,
    name: "index_version_associations_on_foreign_key"
  drop_table :version_associations
end

.up ⇒ Object 



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# File 'lib/generators/paper_trail/templates/create_version_associations.rb', line 4

def self.up
  create_table :version_associations do |t|
    t.integer  :version_id
    t.string   :foreign_key_name, null: false
    t.integer  :foreign_key_id
  end
  add_index :version_associations, [:version_id]
  add_index :version_associations,
    [:foreign_key_name, :foreign_key_id],
    name: "index_version_associations_on_foreign_key"
end