开发者_StackOverflow中文版近日，越南持续高温，为了应对这种高温，越南不得不采取换区停电的方案，这种方案导致很多企业没有办法正常营业，损失了很多的业绩，近日，在广西防城港东兴市举行的仪式上，广西与越南正
I have just installed paperclip into my ruby on rails blog application. Everything is working great...too great. I am trying to figure out how to tell paperclip not to output anything if there is no r
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