ruby-on-rails - 序数 : '1' as '1st' , '2' 为 '2nd' 等的 Ruby 格式

Question

ruby 或 rails 中是否有任何东西可以处理序数的格式:'1' 为 '1st'，'2' 为 '2nd'，等等？

Answer 1

看起来你正在寻找序号:

The Ruby on Rails framework is chock full of interesting little nuggets. Ordinalize is a number extension that returns the corresponding ordinal number as a string. For instance, 1.ordinalize returns “1st” and 22.ordinalize return “22nd”.

Example:

place = 3puts "You are currently in #{place.ordinalize} place."

Result:

You are currently in 3rd place.