用ruby转义双引号

Question

如何在字符串中将double-quotes替换为&quote;？这就是我尝试过的：

1.9.3-p362 :009 > a =  "\"That's it\", she said." 
 => "\"That's it\", she said." 
1.9.3-p362 :010 > a.tr('"', "&quote;")
 => "&That's it&, she said." 

正如你所看到的，我只得到了&quotes;，而不是&，你知道吗？

Answer 1

使用gsub代替

a.gsub(/\"/, "&quote;")

# without regex as noted by hirolau
a.gsub("\"", "&quote;")

# => "&quote;That's it&quote;, she said."