ruby-on-rails - how to extract string from string-number combination rails

Question

my-test-string-4-23

From the above string how can i extract only string that is only my-test-string

I tries to_s method but it returns whole string as it is.

Answer 1

仅对数字进行拆分，拆分返回一个数组，然后 gsub 删除最后一个“-”

str = "my-test-string-4-23"

str.split(/(\d+)/)[0].gsub(/\-$/, '')

将返回

"my-test-string" 

Answer 2

your_string.match('[\D-]')[0].[0..-1] 可能有效。它将返回非小数和破折号的第一个实例，然后删除最后一个 -