zammad/db/migrate/20171213000001_change_authorization_token_size.rb

class ChangeAuthorizationTokenSize < ActiveRecord::Migration[5.1]
  def up
    # return if it's a new setup to avoid running the migration
    return if !Setting.exists?(name: 'system_init_done')

    change_column :authorizations, :token, :string, limit: 2500

  end

end