NGINX - Rewrite .js.php file to .js

Question

I have a dynamically created file start.js.php?c=21 and I would like to rewrite it's extension (to start.js, with query params).

1. Is that possible?
2. Is that a good method having such a rewrite?
3. Is wrong having query string ?c=21 on file location (to populate from PHP file with given c attribute)?

I am trying to create rewrite with:

server {
    location ~ \.js.php$ {
        rewrite ^(.*)$ $1.js last;
    }
}

This is returning 404 error code.

Answer 1

If the underlying filename is script.js.php then it doesn't make sense to rewrite this to script.js - as that would result in a 404.

However, the directives you posted would seem to result in a 404 for a different reason, as they rewrite script.js.php to script.js.php.js.

Presumably, you want to link to script.js?c=21 and internally rewrite this to script.js.php?c=21 (the underlying file), thus hiding the .php file extension from users. In which case, try something like the following instead:

server {
    location ~ \.js$ {
        rewrite (.*) $1.php last;
    }
}

To answer your specific queries:

1. Is that possible?

Yes, but the "reverse" is probably what you really want to be doing. (?)

2. Is that a good method having such a rewrite?

It's OK. Presumably, you have a requirement to mix PHP and JavaScript?

3. Is wrong having query string ?c=21 on file location (to populate from PHP file with given c attribute)?

I don't think there is necessarily anything wrong with this. Bear in mind that some caching proxies may ignore the query string, but I think that is mostly historic.