如何在自定义帖子类型永久链接中添加自定义分类法？

Question

我有一个名为campaign的自定义分类法，一个名为的自定义帖子类型asset。对于资产，我希望具有以下永久链接结构：mysite.com/<campaign_name>/<asset_name>。我已经通过以下代码实现了这一点，但是现在如果我进入带有url结构的任何普通页面，mysite.com/<pagename>它将给出404。并且当我注释掉用于注册自定义帖子类型的函数中的rewrite slug部分时，或者添加了它ams/%campaign%，它可以工作，但这不是我想要的自定义帖子类型的URL结构。

注册自定义分类法的代码：

...
'rewrite' => array(
    'slug' => '',
    'with_front' => true,
),
...

注册自定义帖子类型的代码：

...
rewrite' => array(
    'slug' => '%campaign%',
    'with_front' => true,
),
...

重写规则的功能：

function ams_asset_add_rewrite_rules( $rules ) {
    global $post;
    if ($post->post_type == 'asset' ) {
        $new = array();
        $new['([^/]+)/(.+)/?$'] = 'index.php?asset=$matches[2]';
        $new['(.+)/?$'] = 'index.php?campaign=$matches[1]';
        return array_merge( $new, $rules );
    }
    return $rules;
}
add_filter( 'rewrite_rules_array', 'ams_asset_add_rewrite_rules' );

// Handle the '%campaign%' URL placeholder
function ams_asset_filter_post_type_link( $link, $post = 0 ) {
    if ( $post->post_type == 'asset' ) {
        $cats = wp_get_object_terms( $post->ID, 'campaign' );
        if ( $cats ) {
            $link = str_replace( '%campaign%', $cats[0]->slug, $link );
        }
    }
    return $link;
}
add_filter( 'post_type_link', 'ams_asset_filter_post_type_link', 10, 2 );

Answer 1

首先，注册您的分类法，然后注册您的自定义帖子类型。您可能还需要保存您的永久链接。我认为您不希望将“with_front”设置为 true。其余的可能没问题，但这是一个有效的示例。

/**
 * Register a 'campaign' taxonomy for post type 'asset'.
 *
 * @see register_post_type for registering post types.
 */
function wpdocs_create_campaign_tax_rewrite() {
    register_taxonomy( 'campaign', 'asset', array(
        'rewrite' => array(
            'slug' => '',
            'with_front' => false,
        ),
    ) );
}
add_action( 'init', 'wpdocs_create_campaign_tax_rewrite', 0 );


/**
 * Implements init_hook to register post type.
 * https://codex.wordpress.org/Function_Reference/register_post_type
 */
function generic_create_posttype_asset() {
    register_post_type(
        'asset',
        array(
            'labels'       => array(
                'name'          => __( 'Assets' ),
                'singular_name' => __( 'Assets' ),
                'add_new'       => __( 'New Asset' ),
                'add_new_item'  => __( 'New Asset' ),
                'edit_item'     => __( 'Edit Asset' ),
            ),
            'description'  => 'Campaign ...',
            'public'       => true,
            'hierarchical' => true,
            'has_archive'  => true,
            'rewrite' => array(
                'slug' => '%campaign%',
                'with_front' => false,
            ),
            'show_in_menu' => true,
            'menu_icon'    => 'dashicons-category', // https://developer.wordpress.org/resource/dashicons/ .
            'supports'     => array( 'title', 'editor', 'revisions', 'thumbnail' ),
        )
    );
}
add_action( 'init', 'generic_create_posttype_asset' );

/**
 * Rewrite '%campaign%' with taxonomy assigned.
 */
function asset_show_permalinks( $post_link, $post ){
    if ( is_object( $post ) && $post->post_type == 'asset' ){
        $terms = wp_get_object_terms( $post->ID, 'campaign' );
        if( $terms ){
            return str_replace( '%campaign%' , $terms[0]->slug , $post_link );
        }
    } else {
            return $post_link;
    }
}
add_filter( 'post_type_link', 'asset_show_permalinks', 1, 2 );

function generic_cpt_rewrite_flush() {
    generic_create_posttype_asset();
    flush_rewrite_rules();
}
register_activation_hook( __FILE__, 'generic_cpt_rewrite_flush' );