Fixing custom rewrite rule

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I am following the WP Example. I know my rewrite rule is being added into wordpress, so I just need to fix the actual rule. So here is my current code: 

add_filter('rewrite_rules_array','mcs_TextbookRewriteRules');
add_filter('query_vars','mcs_insertTextbookQueryVars');

// Adding a new rule
function mcs_TextbookRewriteRules($rules) {
    $newrules = array();
    $newrules['textbook/(cantonese|mandarin)/([C|M]K?[0-9]+)/([0-9]+)$'] = 'index.php?pagename=textbook/$matches[1]/?cls=$matches[2]&ch=$matches[3]';
    //$newrules['textbook/(cantonese|mandarin)/([C|M]K?[0-9]+)/([0-9]+)$'] = 'textbook/$matches[1]/index.php?cls=$matches[2]&ch=$matches[3]';
    return $newrules + $rules;
}

// Adding the id var so that WP recognizes it
    function mcs_insertTextbookQueryVars($vars) {
    array_push($vars, 'cls');
    array_push($vars, 'ch');
    return $vars;
}

I want to map http://localhost/wordpress/textbook/cantonese/CK1/6 to http://localhost/wordpress/textbook/cantonese/?cls=CK1&ch=6

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1 comment

  1. I see a second ? in your query variables (before the cls query variable), probably from experimenting with the commented-out form, I think you want to use & there.

    Your query_vars hook currently adds the id variable, but you use cls and ch in your rewrite rule, so this will not have an effect.

    If you are changing the rewrite rules I recommend my rewrite analyzer plugin (soon in the repository, but get the current version via Dropbox), it helps you debug these things.