本文介绍了Ruby将标题发布给Slug的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我应该如何在Ruby中将帖子标题转换为子弹?
How should I convert a post title to a slug in Ruby?
标题可以有任何字符，但我只希望子弹允许[a-z0-9-_](应该允许任何其他字符吗?).
The title can have any characters, but I only want the slug to allow [a-z0-9-_] (Should it allow any other characters?).
所以基本上:
- 小写所有字母
- 将空格转换为连字符
- 删除无关字符
推荐答案
slug = title.downcase.strip.gsub(' ', '-').gsub(/[^\w-]/, '')
downcase使其变为小写. strip确保没有前导或尾随空格.第一个gsub用连字符替换空格.第二个gsub删除所有非alpha非破折号非下划线字符(请注意，该集合与\W非常接近，但也包括破折号，这就是为什么在此处说明的原因).
downcase makes it lowercase. The strip makes sure there is no leading or trailing whitespace. The first gsub replaces spaces with hyphens. The second gsub removes all non-alpha non-dash non-underscore characters (note that this set is very close to \W but includes the dash as well, which is why it's spelled out here).
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