视图中裸露滤镜的正则表达式[Drupal 8]

我正在尝试使用正则表达式在Drupal 8视图[Exposed Filter]中过滤出结果。我需要在特定字段的后4或5位数字/字母中搜索关键字。

例如：

• 2006ABC00022
• 2014DEF03120
• 2019年
• 2019年

These are the data I need to filter. If someone tried to search "0022" I want to show the result as 2006ABC00022. Because the last 4 digit is 0022. We can use Ends with operator to do this. But I want something different because If someone tried to filter the result with "312" I want to show the results as 2014DEF03120 and 2019GHI03128. Because these 2 strings have 312 as starting of the last 4 digits. This scenario will not work if I use 'Ends with' operator. So I go for a regular expression.

"[0- 9]{4}$"

I tried to use the regex with the above one. And I realize that this is not working as I expected. This one is searching all over the string. If I search for 2019 it shows the last 2 results. But it should be empty.

我只想搜索最后4位数字上的关键字。如果关键字是5位数字，则搜索最后5位数字。