REGEX for Google Analytics Filters

Question

I have a link with a lot of parameters and want to exclude most of them (only keep one) and replace it for a name

The link has the structure below: https://www.abc.ab/something/somethingelse?card_type=status&a-bunch-of-trailing

Card_type can have different "status" values

Ideally I would like to keep: https://www.abc.ab/something/somethingelse?card_type=status and replace ?card_type=status by "/card_type"

I attempted this on GA:

Search string

/*(.*?)\card_type\=*

Replace string: /card_type

But this isn't working at all

Answer 1

You could match ?card_type= followed by matching any char 0+ times .* If it should be from the start of the string you could use an anchor ^ at the start of the pattern.

In the replacement use the first capturing group followed by the replacement string.

(.*?)\?card_type=.*

• (.*?) Capture group 1 matching any char 0+ times non greedy
• \? Match a ? by escaping it
• card_type= Match literally
• .* Match any char 0+ times non greedy

Replace with

$1/card_type

Regex demo

To get a bit more precise match for the url instead of using .*?, you might match the protocol:

^(https?:\/\/\S+\/[^?]*)\?card_type=.*

Regex demo