db/migrate/20150609141121_add_session_expire_delay_for_application_settings.rb


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class AddSessionExpireDelayForApplicationSettings < ActiveRecord::Migration[4.2]
  def change
    unless column_exists?(:application_settings, :session_expire_delay)
      add_column :application_settings, :session_expire_delay, :integer, default: 10080, null: false
    end
  end
end