URL rewrite rules for multiple taxonomies query

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I’m trying to create some pretty URLs for links querying multiple taxonomies. I’m using the “Taxonomy drill-down” plugin, although the main usage is now integrated @ the core it still has some helpful function for templating 🙂

An example URL querying multiple taxonomies ( working ) would be:
domain.com/?tax1=foo&tax2=bar

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My goal is to have links like –
domain.com/tax1/foo/tax2/bar – translating to the above example

tax1/2 = taxonomy name

foo/bar = required term

I stumbled upon Examples of WP Rewrites but i think i suck with those patterns and something like: 

$newrules['tax1/(.*)/tax2/(.*)/'] = 'index.php?tax1=$matches[1]&tax2=$matches[2]';

doesn’t seem to work ( that’s just a portion of the whole function based on the WordPress example )

Any ideas? 🙂

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  1. (.*) matches everything, so it will “eat up” the extra characters (it is “greedy”). If the URL is /tax1/foo/tax2/bar/, the first (.*) will be foo/tax2/bar/, so nothing is left for the second match.

    Instead of (.*) you can use the “non-greedy” version (.+?). This will match as much as possible, but still keep the rest in mind. You can also use the even stricter version ([^/]+): this will match everything up to the next / – but this will not work for nested categories, so /category/fruit/banana/tag/flies/ will not split up in fruit/banana and flies like you might expect.

    If you are going to play with the rewrite rules I recommend you to install my Rewrite analyzer plugin. It allows you to see the current rewrite rules and play with URLs to see which rules will match.