Nginx rewrite query on index path

Question

I am trying to convert

/?q=bla+bla

to

/bla-bla

So i have tryied this code but no succes. Error 500

location / {
    try_files $uri $uri/ /index.html;
    rewrite ^/(.*)$ /?q=$1 last;
}

I need some help please. thanks

Answer 1

location = / {
    return 302 /$arg_q;
}