How to make variables in URL look like the permalink structure?

Question

I've been looking for the answer to this everywhere but with no success and that's why I'm asking here.

I don't even know if the question is the right one.

In any case, I'll try to explain.

I have a WordPress page with variables in the URL, like this: http://planeta-beisbol.com/tal-dia-como-hoy/?dia=18&mes=04

The content changes depending on the day and month of the year because is gathered from the databse.

My question is: How can I change the URL to look something like planeta-beisbol.com/tal-dia-como-hoy/dia/18/mes/04 or planeta-beisbol.com/tal-dia-como-hoy/18/04

Any help is apreciated. Thanks.

Answer 1

The following two functions should point you in the right direction:

function wpse49393_query_vars($query_vars)
{
    $query_vars[] = 'myvar';
    return $query_vars;
}
add_filter('query_vars', 'wpse49393_query_vars');

function wpse49393_rewrite_rules_array($rewrite_rules)
{
    $rewrite_rules['path/to/page/([^/]+)/?$'] = 'index.php?pagename=path/to/page&myvar=$matches[1]';
    return $rewrite_rules;
}
add_filter('rewrite_rules_array', 'wpse49393_rewrite_rules_array');

I would give credit where it is due, but I cannot remember where I originally found this code. I just pulled this out of a project that I am currently working on. To use it, change myvar to the name of your variable in the first function as well as here: &myvar=$matches[1]. Change path/to/page/ to the actual path of your page at two locations in the second function.

Answer 2

You can do you're own custom permalink structures, have you looked here - http://codex.wordpress.org/Using_Permalinks?

Answer 3

Thanks to this post for the heads up: http://zagar.biz/2011/wordpress-creating-custom-permalinks/

My final code ended up being like this:

In the theme's functions.php file

add_filter('rewrite_rules_array','mycode_add_rewrite_rules');

// Add all rewrite rules here
// ** Remember to Flush Rewrite rules when adding new rules.
// this is done by visiting the Settings > Permalinks in WP admin.

function mycode_add_rewrite_rules($rules){
    $newrules = array();
    $newrules['tal-dia-como-hoy/([^/]+)/([^/]+)/?'] = 'index.php?pagename=tal-dia-como-hoy&dia=$matches[1]&mes=$matches[2]';
    return $newrules + $rules;
}

add_filter('query_vars','mycode_add_rewrite_query_vars');

// Add all slugs so that WP recognizes it
function mycode_add_rewrite_query_vars($vars){
    array_push($vars, 'dia');
    array_push($vars, 'mes');
    return $vars;
}

Then, in the page I created. This is just a regular wordpress page, not a template or anything like that

global $wp;

// connect to your external DB, etc...

if($wp->query_vars["dia"]){

echo "Permalinks are working";
    // load up your external data here and display single resource
        // if the beard slug doesn't exist, redirect to 404
} else {
    // load up whatever you want to display for the index version.
echo "Nothing shows up but it's working anyway";
}

I have to edit the page to make it look good with my brand new permalinks.

This is the page I'll using with this code: http://planeta-beisbol.com/tal-dia-como-hoy/19/04/

The "19/04" part means: 19th of April

I hope this code is useful for everybody