gistfile1.rb

  def restrict_to_owner(application, error = false, &block)
    return unless logged_in?
    
    if application.is_owner? current_user
      p block
      p block.call
      block.call
    elsif error
      flash[:error] = 'You must be an owner of this application to do that.'
      redirect_to(application)
    end
  end