How to properly set up a redirect with $args?

Question

Nginx

Please help me figure out how to set up a redirect, I've already broken my head and tried a thousand combinations.

What is available: There are pagination pages of the site.ru/?q=&p=331 format
What needs to be done: Redirect to site.ru/page/331 format pages

Or just give the 404 page

Answer 1

location = / {
  if ($arg_p) {
    rewrite / /page/$arg_p? redirect;
  }
}

Answer 2

location / {
 if ($query_string ~ "(^|&)q\=($|&)"){
  if ($query_string ~ "(^|&)p\=([0-9]({1,})($|&)"){
    rewrite ^/$ /page/$2? redirect;
}
  }
}

but here using if is not the best idea
. Maybe it makes sense for you to put a puff redirect in 404.php.
Firstly, you will not lose speed because redirects will only work if 404, respectively, they will not load the server into an empty
one. Second, puff redirects are easier than on nginx