Ruby on rails Rails Resuce,在道岔救援中提供信息
我有以下资料:Ruby on rails Rails Resuce,在道岔救援中提供信息,ruby-on-rails,exception,ioexception,raise,Ruby On Rails,Exception,Ioexception,Raise,我有以下资料: class MailingJob < Struct.new(:mailing_id) class MissingInfo < ArgumentError; end def perform .... begin ...... raise MissingInfo, "Not found", message_all, @message_from if @message_reply.length == 0
class MailingJob < Struct.new(:mailing_id)
class MissingInfo < ArgumentError; end
def perform
....
begin
......
raise MissingInfo, "Not found", message_all, @message_from if @message_reply.length == 0
......
rescue MissingInfo => reason, message_all, message_from
UserMailer.delay.incoming_mails_error_notification(reason, message_all, message_from)
end
end
谢谢大家! 营救关键字只捕获错误对象。您需要在异常对象中捕获这些值:
class MissingInfo < ArgumentError
attr_accessor :messages
def initialize(messages = {})
self.messages = messages
end
end
begin
raise MissingInfo.new(:all => message_all, :from => message_from, :reason => reason)
rescue MissingInfo => missing_info
puts missing_info.messages[:all]
end
class missingfomessage\u all,:from=>message\u from,:reason=>reason)
救援任务信息=>丢失信息
放置丢失的信息。消息[:全部]
结束
但这是错误处理的滥用。对于真正的错误,通常最好使用begin和raise,这些错误是您不期望的。MissingInfo听起来像是在处理用户输入。用户输入可能会丢失数据。做常规检查。试着想想你真正想要表达的行为。有趣,但信息是在存在中定义的。因此,在手之前设置它是一个问题否?另外,NoMethodError(MailingJob::MissingInfo:Class的未定义方法'attr_accessible'):还有,Tryed,MissingInfo
attr\u访问器
,得到相同的未定义方法'attr\u accessible',对不起,我的错。回答了一个关于attr_的问题,在此之前几分钟可以访问…:)
class MissingInfo < ArgumentError
attr_accessor :messages
def initialize(messages = {})
self.messages = messages
end
end
begin
raise MissingInfo.new(:all => message_all, :from => message_from, :reason => reason)
rescue MissingInfo => missing_info
puts missing_info.messages[:all]
end