9 lines
232 B
Ruby
9 lines
232 B
Ruby
class AddParentIdToEnumerations < ActiveRecord::Migration
|
|
def self.up
|
|
add_column :enumerations, :parent_id, :integer, :null => true, :default => nil
|
|
end
|
|
|
|
def self.down
|
|
remove_column :enumerations, :parent_id
|
|
end
|
|
end
|