使用add_rewrite_rule（）或generate_rewrite_rules（）的Wordpress URL重写自定义分类法

Question

I'm trying to get my head around amending some URL's for a website I have created. After reading two (very informative) answers ( 1 , 2 ) but I'm still a little unsure how to approach creating a URL that shows a custom post type in the hierachy of it's categories (created by custom taxonomies).

From my reading, I gather that add_rewrite_rule or generate_rewrite_rules seem to be the best options to use, but I cannot seem to get it functional... like... at all! Here is the URL structure I have currently :

Base        = http://domain.com/bands
Category    = http://domain.com/band-type/acoustic-duos
Single Post = http://domain.com/bands/duo-1

And here is what I am looking to achieve :

Base        = http://domain.com/bands
Category    = http://domain.com/bands/acoustic-duos
Single Post = http://domain.com/bands/acoustic-duos/duo-1

In the scenario above, bands is the custom-post-type , whilst band-type is the custom-taxonomy I have created for 'bands'.

From using @jan-fabry Rewrite Analyzer plugin, I can see the custom taxonomy pattern is: band-type/([^/]+)/?$ for the first argument for add_rewrite_rule() but I don't know how Wordpress references custom taxonomies in the index.php URL variable, used for the $redirect argument (eg index.php?tax=bands )... so unsurprisingly the following code (placed within functions.php ) did not work at all:

wp_reset_query();
function sheixt_init()
{
add_rewrite_rule(
    'band-type/([^/]+)/?',
    'index.php?cat=&band-type=$matches[1]',
    'top' );
}
add_filter( 'query_vars', 'sheixt_query_vars' );
function sheixt_query_vars( $query_vars )
{
    $query_vars[] = 'band-type';
    return $query_vars;
}

I still feel I'm not grasping how this works (at all!) and reading the codex is confusing me further so I'm not sure how to approach using generate_rewrite_rules() .

Lastly, I'm wondering if I'm fooling foul of a permalink conflict, as I want the custom-taxonomy (band-type) to use the custom-post-type's slug ('bands') as the baseline for the URL.

Please can you point me in the right direction, I can provide more information if necessary. Thanks.

Answer 1

This can all be done with your .htaccess file. This assumes the .htacces file is in your root directory and that wordpress is installed in the root directory and not a subfolder. If you installed wordpress in a subfolder change the RewriteBase to:

RewriteBase http://domain.com/subfolder/

Where subfolder is the subdirectory where you installed wordpress. For all else use the code below where the wordpress install is in the root directory.

# BEGIN WordPress

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

RewriteRule ^band-type/acoustic-duos/(.*)$ bands/acoustic-duos/$1 [QSA,L]
RewriteRule ^bands/(.*)$ bands/acoustic-duos/$1 [QSA,L]


RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

Be careful when editing the .htaccess file. Make sure to save a backup of your current .htaccess before editing using the code above. I believe the first RewriteRule should work. the second RewriteRule may cause a redirect loop or your site to crash because we are redirecting two urls:

/bands/duo-1 
/band-type/acoustic-duos 

to have a new base of:

/bands/acoustic-duos