RAILSJSON在字符串中保留反斜杠-RAILSJSONkeepbackslashinstring

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value=".+\.runsheet\..+" in the HTML will end up as '.+\.runsheet\..+' in Ruby so you're being confused somewhere. Nothing you do will (without trickery) will give you a string like:

HTML中的value =“。+ \。runsheet \ .. +”将在Ruby中以'。+ \。runsheet \ .. +'结尾,因此您在某处感到困惑。你没做什么(没有欺骗)会给你一个字符串,如:

".+\.runsheet\..+"

in Ruby or JSON. Backslashes have special meaning in both Ruby double quoted strings and JSON formatted strings. Neither one needs a backslash to escape a . so neither will put it there. But because \ has a special meaning as an escape character in both Ruby double quoted strings and JSON, a single \ will look like \\ because both have to escape the special mean of \ by, well, escaping the escape character.

在Ruby或JSON中。反斜杠在Ruby双引号字符串和JSON格式字符串中都有特殊含义。两个人都不需要反斜杠来逃避。所以两者都不会把它放在那里。但是因为\在Ruby双引号字符串和JSON中具有特殊含义作为转义字符,单个\将看起来像\ \因为两者都必须通过转义逃逸字符来逃避\的特殊意义。

Go into irb and say:

进入irb并说:

puts ".+\.runsheet\..+"

and see what you get. Then say:

看看你得到了什么。然后说:

puts ".+\\.runsheet\\..+"

and see what you get. The first will give you:

看看你得到了什么。第一个会给你:

.+.runsheet..+

and the second:

第二个:

.+\.runsheet\..+

Then you can throw in some to_json calls (again using puts to see the results so that you avoid the escaping that inspect will use) and you'll see similar things happening.

然后你可以抛出一些to_json调用(再次使用puts来查看结果,这样你就可以避免check将使用的转义)并且你会看到类似的事情发生。