db/migrate/20170930213633_rename_revision_hold_item.rb


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class RenameRevisionHoldItem < ActiveRecord::Migration[5.1]
  def change
    remove_column :pokeviewer_revisions, :hold_item, :integer

    change_table :pokeviewer_revisions do |t|
      t.integer :item_id
    end

    add_foreign_key :pokeviewer_revisions, :pokeviewer_items, column: :item_id
  end
end