我已经设置了一个具有自定义功能的CPT。

add_action(\'init\', \'fac_product_posttype_init\');
function fac_product_posttype_init(){
    $product_labels = array( ... );
    $caps = array(
            \'publish_posts\' => \'publish_products\',
            \'edit_posts\' => \'edit_products\',
            \'delete_posts\' => \'delete_products\',
            \'edit_published_posts\' => \'edit_published_products\',
            \'delete_published_posts\' => \'delete_published_products\',
            \'delete_others_posts\' => \'delete_others_products\',
            \'edit_others_posts\' => \'edit_others_products\',
            \'edit_post\' => \'edit_product\',
            \'delete_post\' => \'delete_product\',
            \'read_post\' => \'read_product\',
            \'upload_files\' => \'upload_files\'
        );
    $args = array(
        \'labels\' => $product_labels,
        \'public\' => true,
        \'publicly_queryable\' => true,
        \'show_ui\' => true, 
        \'query_var\' => true,
        \'rewrite\' => true,
        \'capability_type\' => \'product\',
        \'capabilities\' => $caps,
        \'hierarchical\' => false,
        \'supports\' => array(\'title\',\'editor\',\'thumbnail\'),
        \'has_archive\' => \'products\',
        \'menu_position\' => 5, 
        \'show_in_nav_menus\' => false
    ); 
    register_post_type(\'product\',$args);
}

然后将这些能力分配给administrator 和subscriber

function fs_add_roles(){
    $roles_set = get_option(\'fs_roles_are_set\');
    //if(!$roles_set){

    $admin = get_role(\'administrator\');
    $admin->add_cap(\'publish_products\');
    $admin->add_cap(\'edit_products\');
    $admin->add_cap(\'delete_products\');
    $admin->add_cap(\'edit_published_products\');
    $admin->add_cap(\'delete_published_products\');
    $admin->add_cap(\'edit_others_products\');
    $admin->add_cap(\'delete_others_products\');

    //update_option(\'fs_roles_are_set\', true);

    $subscriber = get_role(\'subscriber\');
    $subscriber->add_cap(\'publish_products\');
    $subscriber->add_cap(\'edit_products\');
    $subscriber->add_cap(\'delete_products\');
    $subscriber->add_cap(\'edit_published_products\');
    $subscriber->add_cap(\'delete_published_products\');
    //}
}
add_action(\'init\', \'fs_add_roles\');

到目前为止一切都很好，我可以看到$wp_roles 设置所有自定义上限的全局数组true 对于administrator 和subscriber.

BUT

当我打电话的时候current_user_can(\'delete_product\', $post_id); 它返回false. 我仔细检查了$post\\u id。它是由$current_user

我花了几个小时试图找出这个问题。但不确定发生了什么。非常感谢您对故障排除的任何建议！

add_filter( \'map_meta_cap\', \'fac_map_meta_cap\', 10, 4 );

function fac_map_meta_cap( $caps, $cap, $user_id, $args ) {

    /* If editing, deleting, or reading a product, get the post and post type object. */
    if ( \'edit_product\' == $cap || \'delete_product\' == $cap || \'read_product\' == $cap ) {
        $post = get_post( $args[0] );
        $post_type = get_post_type_object( $post->post_type );

        /* Set an empty array for the caps. */
        $caps = array();
    }

    /* If editing a product, assign the required capability. */
    if ( \'edit_product\' == $cap ) {
        if ( $user_id == $post->post_author )
            $caps[] = $post_type->cap->edit_posts;
        else
            $caps[] = $post_type->cap->edit_others_posts;
    }

    /* If deleting a product, assign the required capability. */
    elseif ( \'delete_product\' == $cap ) {
        if ( $user_id == $post->post_author )
            $caps[] = $post_type->cap->delete_posts;
        else
            $caps[] = $post_type->cap->delete_others_posts;
    }

    /* If reading a private product, assign the required capability. */
    elseif ( \'read_product\' == $cap ) {

        if ( \'private\' != $post->post_status )
            $caps[] = \'read\';
        elseif ( $user_id == $post->post_author )
            $caps[] = \'read\';
        else
            $caps[] = $post_type->cap->read_private_posts;
    }

    /* Return the capabilities required by the user. */
    return $caps;
}