Concat variable from .user.ini to $request_uri test in stpl to bypass cache

Community Support
1

Using nginx fastcgi only. New to nginx.

I’d like to add a variable with string fragments to keep certain pages/requests from caching. This works fine without a variable by adding in my custom stpl file:

if ($request_uri ~* "fragment0|fragment1|fragment2") {
	set $no_cache 1;				
}

However I’m running into a problem because I don’t understand the syntax or variable scope.

PROBLEM #1:

set $fragment_var '|fragment3'

if ($request_uri ~* "fragment0|fragment1|fragment2$fragment_var") {
	set $no_cache 1;				
}

Doesn’t evaluate correctly. I’ve tried all the variations I can think of in terms of single quotes, double quotes, ${fragment3} and inside/outside the “fragment0|fragment1|fragment2” string

Does anyone know the syntax to get that to work?

PROBLEM #2:
Setting:

set $fragment_var '|fragment3'

in .user.ini causes nginx config to fail. I also tried creating a separate public_html/test.conf in with set $fragment_var '|fragment3' and including it via stpl but I don’t understand the scope or where to insert the include so that is also failing.

I’ve spent a couple hours on this. Any help or alternate solutions would be greatly appreciated!

Thank you!

2

UPDATE: In my naivete, it looks like I can’t use variables in regular expressions, which explains problem 1.

Regarding problem 2, it was a syntax error on my part and I can include things just fine.

So I now have a different solution of adding an include below the stock conditionals. The include contains the same conditionals with the fragments I need for the individual domain.

if ($request_uri ~* "wp-admin/|/wp-json/|wp-.*.php|xmlrpc.php|index.php|/store.*|/cart.*|/my-account.*|/checkout.*") {
	set $no_cache 1;				
}

if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_no_cache|wordpress_logged_in|woocommerce_items_in_cart|woocommerce_cart_hash|PHPSESSID") {
	set $no_cache 1;
}

include %home%/%user%/web/%domain%/public_html/000-prod/.user.ini*;

If anyone has a smarter/more streamlined idea, please post. Thanks!

3

You can’t use .user.ini for nginx config you need to make a new template…

4

Thanks for your reply. I’m not sure I understand. The code in the post is a from the new template.

In .user.ini I put:

if ($request_uri ~* "fragment3") {
  set $no_cache 1;				
}

And it works as expected.

When you say

Do you mean it’s not recommended? Or…? Because you can do that. It seems like a nginx config can include any file name.

5

I am sure .user.ini is only for php-fpm service

The best option is to use a custom plate …

6
7

I think we might me missing each other here.

I already created a custom template per instructions at: Web Templates and FastCGI/Proxy Cache | Hestia Control Panel And solved the initial issues with loading cache exclude fragments saved in a public_html config file which is included in the custom template and not using variables in regex.

It seems like nginx config include directive will load ANY filename.ext but it sounds like you are saying done put nginx directives in .user.ini because php-fpm service uses that in it will mess it up. True?

BTW: Is .user.ini in place of php.ini?

Lastly (and related but off topic) I am writing php code to generate cache exclude fragments on a per wp app basis at the public_html level. I would be happy to contribute the code to the hestia wp cache plugin as that functionality is the main thing a non technical user would need in addition to use nginx/fastcgi with wp-admin. I will open issue at the github repo when I’m done as I think you are involved in that project.