How to detect location more intelligently in Nginx config file?

Question

I'm trying to use location to detect the current locale and transfer (rewrite) the request in my Nginx config file.

This is a my configuration:

location /ru 
{
    rewrite ^/ru/(.*)$ /$1?local=ru;
    rewrite ^/ru /?local=ru;
}

So, I intend to change domain.tld/ru/blog to domain.tld/blog?locale=ru.

But I have encountered one problem. As an example, the URL domain.tld/russell would interfere with this config blog.

I want to be able to get more specific for location syntax. I want to tell Nginx to run this block only and if only the URL starts with a two-letter ru path segment.

How can I do that?

Richard Smith · Accepted Answer · 2023-05-21 15:54:44Z

2

To match /ru and /ru/foo but not /rufoo, you could use a regular expression location. But note that the evaluation order of regular expression locations is significant.

location ~* /ru($|/) { ... }

Alternatively, use two location blocks:

location = /ru { rewrite ^ /?local=ru; }
location /ru/ { rewrite ^/ru/(.*)$ /$1?local=ru; }

answered May 21, 2023 at 15:54

Richard Smith

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5 Comments

Ali EXE Over a year ago

Thank you so much. So, the /ru location won't match /rufoo? Because we already have that one location and it matched /rufoo too.

Richard Smith Over a year ago

location /ru matches anything that begins with /ru unless a more specific location matches instead. location = /ru matches only /ru and nothing else.

Ali EXE Over a year ago

Then how that would solve our problem? I mean how having two separate location blocks saves us from that problem?

Richard Smith Over a year ago

Because neither of those two locations match /russell

Ali EXE Over a year ago

Oh, now I saw the = sign. That makes it more specific. That is so nice. Thank you so much.

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