ruby-on-rails - Ruby on Rails : I want to remove non letters to create a username

Question

假设我的名字是 "Master Yoda"
我将如何自动将其转换为小写，并用下划线替换空格......或者只是去掉空格。

所以也许把它变成master_yoda或 masteryoda
我正在寻找最简洁的解决方案。

Answer 1

'Master Yoda'.underscore # => 'master yoda'
'MasterYoda'.underscore # => 'master_yoda'
'Master Yoda'gsub(' ', '') # => 'MasterYoda'
'Master Yoda'.gsub(' ', '').downcase # => 'masteryoda'