Content Fields builds the arguments for register_post_type() and register_taxonomy() from what you set in the builder. Two filters let you change those arguments before WordPress sees them.
What It Does
nxt/register_post_type_args and nxt/register_taxonomy_args hand you the assembled argument array, the key, and the raw settings. Anything WordPress accepts can be set here, including options the builder does not expose.
Before You Start
- Nexter Extension 4.9.0 or later with Content Fields enabled.
- Somewhere to add PHP — a child theme, a small plugin, or a Nexter code snippet.
- You know the key you want to affect.
Change Registration Arguments
- Add a filter on
nxt/register_post_type_args(or the taxonomy equivalent) with three arguments.

- Test the
$keyso you only change the type you mean.
- Modify the argument array and return it.
- Save Settings → Permalinks once if you changed anything affecting URLs.
When to Use It
- Setting a menu position or icon the builder does not offer.
- Adding
show_admin_columnto a taxonomy so terms appear in the posts list. - Changing rewrite behaviour for one type only.
Display the Value
Adding an argument the builder does not expose:
<?php
add_filter( 'nxt/register_post_type_args', function ( $cpt_args, $key, $args ) {
if ( 'property' !== $key ) {
return $cpt_args;
}
$cpt_args['menu_position'] = 25;
$cpt_args['show_in_admin_bar'] = false;
$cpt_args['rewrite']['with_front'] = false;
return $cpt_args;
}, 10, 3 );
add_filter( 'nxt/register_taxonomy_args', function ( $params, $key, $args ) {
if ( 'property_type' === $key ) {
$params['show_admin_column'] = true;
}
return $params;
}, 10, 3 );
Limitations
- These run at registration time, so a change takes effect on the next page load — but URL changes still need a permalink flush.
- Overriding the post type key here is a bad idea. Posts are stored against it, so changing it hides them.
- The builder is unaware of your override, so its UI will keep showing the original setting.
Troubleshooting
My change has no effect
Check the $key test matches the actual post type key, and that the filter is loaded before init. A filter added too late misses registration.
URLs still 404 after a rewrite change
Save Settings → Permalinks once to flush the rewrite rules.










