我有一个bash脚本: echo " enter file name "
read $file
if [ -f "$file" ] && [ -s "$file" ]
then
echo " file does not exist, or is empty "
else
echo " file exists and is not empty "
fi
无论我作为$
下让黄瓜用Ruby 2.x的工作 当我运行黄瓜,我得到以下信息: *** WARNING: You must use ANSICON 1.31 or higher (http://adoxa.110mb.com/ansicon) to get coloured output on Windows
Warning: you should require 'minitest/autorun' ins
我正在为一篇文章制作一个包含标题,文本和图像字段的基本博客。但是当我试图在一个视图中将模型的TextField和FileField一起保存时,我一直在获取以下错误。 错误。 AttributeError at /new/
'Post' object has no attribute '_committed'
Request Method: POST
Request URL: http://