logger.warn("I don't think that's a good idea")
logger.info("Dave's trying to do something bad")
logger.error("Now he's gone and broken it")
logger.fatal("I give up")
在个Rails中Log信息被写入到Log文件夹文件中具体是哪个文件依赖于你当前环境配置如果是development环境下那么log信息就会被写入到logdevelopment.log文件中相对应test环境下log文件为logtest.logproduction环境下log文件为logproduction.log
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