NoMethodError: undefined method `column' for #<Foreigner::ConnectionAdapters::ForeignKeyDefinition:0x007fa020938740>

以下是迁移代码：

class CreateAdvertisement < ActiveRecord::Migration
  def change
    create_table :advertisement do |t|
      t.integer :issue_id,null: false
      t.string :client_name,null: false
      t.decimal :size,null: false
      t.decimal :price,null: false
      t.decimal :commission_amount,null: false
      t.string :first_payment,null: false
      t.string :second_payment,null: false

      t.timestamps null: false
      t.foreign_key :issue
    end
  end
end

我有外国人1.6.1安装,Rails 4.2.0.有任何想法吗？