Recipe 5.14 Rewriting Based on the Query String

Problem

You want to translate one URI into another based on the value of the query string.

Solution

Put this in your httpd.conf:

RewriteCond "%{QUERY_STRING}"   "^user=([^=]*)"
RewriteRule "/userdirs"         "http://%1.users.example.com/" [R]

Discussion

mod_rewrite does not consider the query string as part of the URI for matching and rewriting purposes, so you need to treat it separately. The given example translates requests of the form:

http://example.com/people?user=jones

http://jones.users.example.com/

The [R] tells mod_rewrite to direct the browser to the URL constructed by the RewriteRule directive.

See Also

• http://httpd.apache.org/docs/mod/mod_alias.html