Rules of "transform rules" setup asking

[user11345]

I have a website https://bac.com/
I am looking for transform rules like if visitors type it then will be rewritten to https://bac.com/?w_id=123

and if visitors type https://bac.com/allproducts the automatic rewrite to adding ?w_id=123 at the end like https://bac.com/allproducts?w_id=123

I have read the official article for a long time and have done some experiments but failed, so I am looking for help from there, hopefully, someone can help me or some hints?

Thanks a lot…

[albert]

If you’re looking to rewrite, that should be doable with Transform Rules → URL Rewrite → Query.

[user11345]

Albert:

Thank you so much, looks great. but one more question is coming out, may you help?

I want to keep fixed content like https://bac.com/wp_admin and all following URLs without any changes.
like https://bac.com/wp_admin and such as bac.com/wp_admin/xxx all keep original URL, not need rewrite rule, how can I do this and keep your rewrite rule working together?

Thank you again.

[albert]

Yes, that is possible

Use the “Edit expression” button to switch to “manual”-mode:

Now edit the expression to include and not starts_with(http.request.uri.path, "/wp-admin"). The entire expression should now look like this:

The result is that any paths below /wp-admin will not have w_id=123 added to them.

[albert]

I just wanted to mention that the current rewrite rule replaces the query string with w_id=123 instead of appending.

If you want to append w_id=123 to the current query string (therefore keeping existing parameters), change “Static” to “Dynamic” and set the value to concat (http.request.uri.query, "&w_id=123").

Though do note this will cause the query string to become ?&w_id=123 if the existing query string is empty - this should be treated as a valid query string but your URL parser may not like it.

[albert]

I’m not sure I understand. Could you try rephrasing?

The URL Rewrite rule should look like this:

[user11345]

Hi Albert: the last one is not working,

Let me tell all exactly I need:

Running website bac.com looking for transform rules like if visitors not from one-third hostname: bbb.com then will be rewritten to https://bac.com/?w_id=123 and also after above rules applied if all coming traffic is https://bac.com/allproducts or https://bac.com/allproducts/xxx then want automatic rewrite to adding ?w_id=123 at the end like https://bac.com/allproducts?w_id=123 and https://bac.com/allproducts/product111?w_id=123

meanwhile want to keep fixed content like https://bac.com/wp-admin and all following URLs without any changes because it’s backend entries like https://bac.com/wp-admin and such as bac.com/wp-admin/xxx all keep original URL, not need a rewrite rule

how can I do it?

[albert]

What happens when a user visits bbb.com? Are they redirected to bac.com? I need to understand your setup to make sure I provide the correct guidance

[albert]

This will also exclude any requests that have a Origin header containing bbb.com:

(
    http.host eq "bac.com"
and
    not starts_with (
        http.request.uri.path,
        "/wp-admin"
    )
and
    not http.request.headers["origin"][0] contains "bbb.com"
)

[user11345]

Thank you so much, after tested, your last rules looks great…

Happy new year to you.

[user11345]

@albert how to process below new rules:

and if I need when the end is ?wpam_id=x (x = any number) but excluds 5 then automatic rewritten to
?wpam_id=123

I ask this just test founded some ?wpam_id=x not automatic rewritten to ?wpam_id=123, how can process it?

also while you type bac.com directly browser will say:

This page isn’t working

bac.com redirected you too many times.

• Try clearing your cookies.

ERR_TOO_MANY_REDIRECTS

---

Now the rules like below:

[user11345]

We have a website: mysite.com, want to set up the below rule but tried several times not working, anyone can help to bring some hints?

question:

All coming traffic automatically adding ?wpam=1 at the URL end at the first time if no such end.

if the end already ?wpam=x (x is any number)then automaticlly covert ?wpam=x to ?wapm=1, but
?wpam=5 will remain original no need change.

After the first time converted then keep mysite.com access original URL.

[albert]

I’m not sure that is possible to do with Transform Rules. URL Rewrites are made to do simple transformations that do not require much logic. I’d recommend you take a look at Cloudflare Workers - they will let you do this, and more

[user11345]

thank you, I will take a look at workers…

[user11345]

worker is really hard to me, I need learn the transform rules again.