Nginx URL rewrite search?q=string (opencart)
Nginx doesn't allow you to match against the query string, instead it has an $args variable and if -s. You can combine this to make the example work like this:
(updated with an nginx if else statement)
location /search { if ($args ~ "q=(?<q>.*)?") { rewrite ^ /index.php?route=product/search&filter_name=$q last; } # Else (if no search query entered from form) rewrite ^ /index.php?route=product/search last;}But since if -s are considered evil in nginx configs, you should use (in your case) the try_files:
location /search try_files $uri /index.php?route=product/search&filter_name=$arg_q;}
The problem is the $ sign. It needs to beforehand in this situation. Solution:
rewrite ^/search?q=$(.*)$ /search.php?q=$1? last;