Remove parameters within nginx rewrite

Question

I\'m rewriting URLs in nginx after a relaunch. In the old site I had query parameters in the URL to filter stuff e.g.

http://www.example.com/mypage.php?type=         


        

Answer 1

If you want to remove a specified parameter from url,

#  in location directive: 
if ($request_uri ~ "([^\?]*)\?(.*)unwanted=([^&]*)&?(.*)") {
    set $original_path $1; 
    set $args1 $2; 
    set $unwanted $3; 
    set $args2 $4; 
    set $args ""; 

    rewrite ^ "${original_path}?${args1}${args2}" permanent;
}

then visit your_site.com/a=1&unwanted=2&c=3

step1. server gives an 302 response, indicating the url is match.

step2. client re-send a request with the new url ( with the parameter removed)