https://ruby-china.org/skyfire en-us <p><img src="https://l.ruby-china.com/photo/2019/64006825-3df5-4459-b693-e9789c504e5c.png!large" title="" alt=""> 我用 save_thumbnail 指令存储文件为 jpg 图片格式，控制台显示是 true，图片默认存储位置在哪里？</p> skyfire Tue, 24 Dec 2019 10:49:14 +0800 https://ruby-china.org/topics/39366 https://ruby-china.org/topics/39366