笔记一下，不常用的destroy命令，和generate相反。有时候写错了一个关键的地方，随手想删掉，就想到它了。比如刚才。。。 liwei$ rails destroy –help Usage: rails destroy GENERATOR [args] [options] General options: -h, [--help]     # Print generator’s options and usage -p, [--pretend]  # Run but do not make any changes -f, [--force]    # Overwrite files that already exist -s, [--skip]     # Skip files that already exist -q, [--quiet]   [...]