Class: ChangeForeignKeyInModuleAuthors

Inherits:

ActiveRecord::Migration

• Object
• ActiveRecord::Migration
• ChangeForeignKeyInModuleAuthors

Defined in:

db/migrate/20130412173121_change_foreign_key_in_module_authors.rb

Overview

Changes module_authors.module_detail_id to module_authors.detail_id so that foreign key matches the conventional name when Mdm::ModuleDetail became Mdm::Module::Detail.

Constant Summary

NEW_COLUMN_NAME =

CONSTANTS

:detail_id

OLD_COLUMN_NAME =

:module_detail_id

TABLE_NAME =

:module_authors

Instance Method Summary

• #down ⇒ void

  Renames module_authors.detail_id to module_authors.module_detail_id.

• #up ⇒ void

  Rename module_authors.module_detail_id to module_authors.detail_id.

Instance Method Details

#down ⇒ void

This method returns an undefined value.

Renames module_authors.detail_id to module_authors.module_detail_id.

# File 'db/migrate/20130412173121_change_foreign_key_in_module_authors.rb', line 15

def down
  rename_column TABLE_NAME, NEW_COLUMN_NAME, OLD_COLUMN_NAME
end

#up ⇒ void

This method returns an undefined value.

Rename module_authors.module_detail_id to module_authors.detail_id

# File 'db/migrate/20130412173121_change_foreign_key_in_module_authors.rb', line 22

def up
  rename_column TABLE_NAME, OLD_COLUMN_NAME, NEW_COLUMN_NAME
end