紅寶石正則表達式：如何從URL中提取字符串

Question

對rubular不太熟悉，想知道如何使用Ruby regex從中提取“ postreview-should-the-cause”原因

"{\"source_url\"=>\"http://testing.com/projects/postreview-should-be-the-cause\"}"

我得到的最好的是

check_user = url.split(/\b(\w+)\b/)
=> ["{\"", "source_url", "\"=>\"", "http", "://", "localhost", ":", "3000", "/", "projects", "/", "postreview", "-", "should", "-", "be", "-", "the", "-", "cause", "\"}"]

仍在嘗試各種方法。 提前致謝。

Answer 1

要從給定的字符串中提取該子字符串，可以使用以下內容進行匹配而不是拆分。

result = url.match(/\w+(?:-\w+)+/)

工作演示

Answer 2

您可以使用string.scan而不是string.split

> "{\"source_url\"=>\"http://testing.com/projects/postreview-should-be-the-cause\"}".scan(/(?<=\/)[^\/"]*(?=[^\/]*$)/)[0]
=> "postreview-should-be-the-cause"

Answer 3

\/(?!.*\/)

以此拆分並獲得第二個組件。請參閱演示。

https://regex101.com/r/sH8aR8/48