htaccess rewrite from url query

Question

I need some help trying to redirect a query to a url.

www.example.com/?categoryID=79
needs to redirect to
www.example.com/catname

where catname is just a string, it has no variables.

Here's what I tried so far:
I began with a humble approach that failed horribly:

redirect 301 /?CategoryID=79 http://www.example.com/catname/   

then i moved on to mod_rewrite :  
RewriteCond %{QUERY_STRING} CategoryID=79$ 
RewriteRule (.*) /catname/? [R=301,L]

Both did not work and I'm actually stomped.
any help would be appreciated.

Just to be clear, In the end i'll have many of these rules redirecting to various category names.

important - it's not enough for /catname to display the proper page, the request with the query parameter must redirect to the new url.

anubhava · Accepted Answer · 2014-07-21 10:20:31Z

1

This rule should work for you as first rule in your .htaccess:

RewriteEngine On

RewriteCond %{THE_REQUEST} \s/+\?CategoryID=79[&\s] [NC]
RewriteRule ^ /catname/? [R=302,L]

answered Jul 21, 2014 at 10:20

anubhava

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6 Comments

Patrick Over a year ago

That's amazing :) Any chance you can explain what's going on in those two lines of code? Or if you can refer me to any resources on the matter? Most resources are found I honestly could not follow.

anubhava Over a year ago

Good resource is askapache.com and about this rule I am using %{THE_REQUEST} variable here. THE_REQUEST variable represents original request received by Apache from your browser and it doesn't get overwritten after execution of other rewrite rules. Example value of this variable is GET /index.php?id=123 HTTP/1.1

Patrick Over a year ago

Thanks for that answer, Could you please specify a RewriteCond for a URL that looks www.example.com/?categoryID=79?OK=100 - I tried expanding from your example but that did not work too well :)

anubhava Over a year ago

You cannot match URL and host name both in same RewriteCond For matching host name you need to use RewriteCond %{HTTP_HOST} ^www\.example\.com$ and another RewriteCond For matching URI.

anubhava Over a year ago

For capturing 2 query parameters use: RewriteCond %{THE_REQUEST} \s/+\?CategoryID=79&OK=([^&]+)[&\s], then use %1 and %2 in the target URI.

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