How to make Tag Aliases

Question

How would I build something like this with wordpress. Where multiple tags texts all go to the same page.

If you click on the tag "scifi" it takes you to tag "science fiction". I am not looking for a way to merge them.

I want the tag text to vary, but the end page to be the same. Any Ideas?

A physical redirect shouldn't be needed. The tag text of X needs to be linked to Y when wordpress builds the link.

Example: If I type "scifi" as a tag, and the link gets build as <a href="/tag/science fiction">scifi</a> and therefore the tag is an alias for "science fiction".

Where would I hook in to do this?

Answer 1

Have not tested tested yet, but I see in the Codex page for wp_insert_term there's one argument alias_of, which is described:

There is no default, but if added, expected is the slug that the term will be an alias of. Expected to be a string.

Maybe it helps ;)

Answer 2

I guess the best would be to simply merge synonyms. You can use this plugin - @scribu is a trusted author.

Answer 3

I can use the term_link filter, for the linking half of this problem:

Here is a basic,still hard coded, version:

<?php
/*
Plugin Name: Tag Alias
Version: 0.001
Plugin URI: 
Description: Adams Tag Alias -> hard coded tag redirects
Author: Adam
*/

$aliases = array (
    "450"  => "400",
    "speed controler" => "esc",
    "kds" => "esc"
);

function tagAliasFilter ($termlink, $term, $taxonomy) {
    global $aliases;
    foreach ($aliases as $alias => $key)
    if($term->slug == $alias)
    {
        $termlink = str_replace($alias,$key,$termlink);     
    }   
    return $termlink;
}
add_filter('term_link', 'tagAliasFilter',10,3);
?>

Now what is missing is pulling in the aliases on the tag pages