在Ruby中使用带有安全导航操作符的[]-Using[]withtheSafeNavigationOperatorinRuby

16  

Just use the ordinary (non-sugar) form.

只需使用普通(非糖)形式。

request.path.match(/\A\/(?(?!admin|assets)\w+)/)&.[](:slug)

2  

You can send any method, so using safe-browsing operator this will be:

您可以发送任何方法,因此使用安全浏览操作符将是:

request.path.match(/\A\/(?(?!admin|assets)\w+)/)&.send(:[], :slug)

2  

For better readability I would pick #dig instead of the #[].

为了更好的可读性,我会选择#dig而不是#[]。

Like,

request.path.match(/\A\/(?(?!admin|assets)\w+)/)&.dig(:slug)

instead of

request.path.match(/\A\/(?(?!admin|assets)\w+)/)&.[](:slug)

1  

For readability, I prefer using the match's named_captures method which is available from ruby 1.9.1, with the safe operator which is available from ruby 2.3.0.

为了便于阅读,我更喜欢使用matchy的named_captures方法,该方法可以从ruby 1.9.1获得,安全操作符可以从ruby 2.3.0获得。

request.path.match(/\A\/(?(?!admin|assets)\w+)/)&.named_captures&.dig('slug')