Redirection if query parameter exists on nginx
forum, ipb, nginx, redirect, url-rewriting
Solution
Your problem relates to the use of break instead of last. From the documentation:
http://wiki.nginx.org/HttpRewriteModule#rewrite
last - completes processing of current rewrite directives and restarts the process (including rewriting) with a search for a match on the URI from all available locations.
break - completes processing of current rewrite directives and non-rewrite processing continues within the current location block only.
Since you do not define a handler for the /redirector within the /forum location block, your if(..) { rewrite } does not do what you want. Make that break a last, so that the rewrite can trigger the appropriate location block.
Problem
I'm using IPB forums. I managed to use friendly urls with nginx server conf modifications. However I need to redirect my old forum's URLs to a redirector php file to get current url of a topic (or forum, member etc.). For example: if url is like `/forum/index.php?board=23`, I will do a redirection to redirector.php . This is my current configuration to be able to use friendly URLs on IPB ``` location /forum { try_files $uri $uri/ /forum/index.php; rewrite ^ /forum/index.php? last; } ``` When I do insert an if statement inside this location block like the following, I can not retrieve query parameter "board". ``` location /forum { if ($arg_board != "") { rewrite ^ /redirector.php?q=$arg_board break; } try_files $uri $uri/ /forum/index.php; rewrite ^ /forum/index.php? last; } ``` What is missing in here?