Using htaccess to redirect query urls

Question

I need to redirect a multiple urls within a few different categories using htaccess. The current structure is;

.com/category/subcat/product.html?querystring=123

And I need all versions of the querystring URL to redirect to;

.com/product.html

I don't mind writing a few lines for multiple categories but there are 1000's of variations of the querystring and cannot write all of them out.

Anyone have any ideas??

Answer 1

Try adding this to the htaccess file in your document root:

RewriteEngine On
RewriteCond %{QUERY_STRING} (^|&)querystring=123(&|$)
RewriteRule ^category/subcat/product\.html$ /product.html? [L,R=301]

As for the variations, if it's just a matter of a different numeric ID, then you can use:

RewriteCond %{QUERY_STRING} (^|&)jewelry_(metal|carat|colour|clarity)=[0-9]+(&|$)

If the "product" part is supposed to be variable, then replace the line with the rule with:

RewriteRule ^category/subcat/(.+)\.html$ /$1.html? [L,R=301]

If "category" and "subcat" can be anything then:

RewriteRule ^[^/]+/[^/]+/(.+)\.html$ /$1.html? [L,R=301]