Ruby on Rails自动事务过滤器及相应的错误处理

around_filter :around_action_filter protected def transaction ret = true ActiveRecord::Base.transaction do begin yield if block_given? rescue Exception => ex set_notice(ex.message) ret = ex.message raise ActiveRecord::Rollback, ex.message end end return ret end def around_action_filter return yield if request.get? redirect_to(:controller => "error_display", :action => "error_notice") if transaction { yield if block_given? } != true end

这是写在ApplicationController里的处理代码。其中的set_notice只是将flash[:notice]设置一下，以便在error_notice页面显示。