20150429145001_add_mirror_to_block.rb 352 Bytes
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class AddMirrorToBlock < ActiveRecord::Migration
  def up
    change_table :blocks do |t|
      t.boolean :mirror, :default => false
      t.references :mirror_block
      t.references :observers
    end
  end

  def down
    remove_column :blocks, :mirror
    remove_column :blocks, :mirror_block_id
    remove_column :blocks, :observers_id
  end
end