（编辑：去拿“学生”徽章，想知道是否有人可以投票支持这个问题？）

我回答说a question 关于能力，但现在我需要这方面的帮助。在审查之后the manual, 我更困惑了。

我有两种自定义帖子类型，管理员都可以完全访问。我有订阅者，有些人可以访问其中一个CPT，它是第一个CPT的“子”并将其父ID存储在_adm_id 元数据。这些“特殊”订阅者可以访问父CPT admin表，因此他们可以单击链接来创建具有特殊状态的父CPT帖子。接下来，允许订阅者编辑子帖子（包括其自己的帖子和其他人创建的帖子），但前提是它具有特定的自定义帖子状态。最后，特别订阅者不允许删除帖子（或编辑已删除的帖子），甚至不允许删除自己的帖子。

以下是我得到的（工作代码）。。。

// Setup custom post types and statuses
add_action(\'init\', function() {
    // Custom Post Types
    register_post_type(\'adm-cpt\', array(
        \'label\'             => __(\'Admin Only CPT\'),
        \'show_ui\'           => TRUE,
        \'show_in_menu\'      => \'my-menu-item\',
        \'show_in_admin_bar\' => FALSE,
        \'capability_type\'   => \'adm\',
        \'map_meta_cap\'      => TRUE,
        \'capabilities\' => array(
            \'create_posts\'  => \'administrator\', // Only admin can create, not special Subscribers
        ),
    ));
    register_post_type(\'sub-cpt\', array(
        \'label\'             => __(\'Subscriber/Admin CPT\'),
        \'show_ui\'           => TRUE,
        \'show_in_menu\'      => \'my-menu-item\',
        \'show_in_admin_bar\' => FALSE,
        \'capability_type\'   => \'sub\',
        \'map_meta_cap\'      => TRUE,
    ));
    // Custom Post Statuses
    foreach(array(
        \'adm-childable\'     => __(\'Can Create Children\'),
        \'sub-editable\'      => __(\'Any Subscriber Can Edit\'),
    ) as $slug => $label) {
        register_post_status($slug, array(
            \'label\'         => _x($label, \'post\'),
            \'label_count\'   => _n_noop($label .\' <span class="count">(%s)</span>\', $label .\' <span class="count">(%s)</span>\' ),
            \'public\'        => TRUE,
        ));
    }
});

// Setup parent page in admin menu
add_action(\'admin_menu\', function() {
    // Add menu item
    if(current_user_can(\'administrator\')
    || current_user_can(\'special-subscriber\')
    ) {
        // Admin menu header
        add_menu_page(
            NULL,
            \'CPTs\',
            \'exist\',
            \'my-menu-item\',
            \'\'
        );
    }
});

// Set up role
add_action(\'wp_roles_init\', function($wp_roles){
    // Prepare
    $role = \'special-subscriber\';
    $caps = array(
        \'delete_subs\'           => FALSE,   // No trashing ...
        \'delete_others_subs\'    => FALSE,
        \'delete_published_subs\' => FALSE,
        \'delete_private_subs\'   => FALSE,
        \'edit_published_subs\'   => FALSE,   // And no editing published/private posts ...
        \'edit_private_subs\'     => FALSE,
        \'edit_adms\'             => TRUE,    // Allow viewing of adm-cpt table
        \'edit_posts\'            => TRUE,    // WARNING:  Here\'s the permission that is causing the problems!
    );
    $name = __(\'"Special" Subscriber\');
    // Update role in database, if needed
    if($wp_roles->get_role($role) === NULL
    || $wp_roles->get_role($role)->capabilities != $caps
    || $wp_roles->roles[$role][\'name\'] !== $name
    ) {
        $wp_roles->remove_role($role);
        $wp_roles->add_role($role, $name, $caps);
    }
});

// Dynamicly set capabilities
add_action(\'user_has_cap\', function($allcaps, $caps, $args, $user) {
    foreach($caps as $cap) {
        $perm = substr($cap, 0, strrpos($cap, \'_\'));
        $type = substr($cap, strlen($perm)+1);
        if(in_array($type, array(\'adm\', \'adms\')) && in_array(\'administrator\', $user->roles)
        || in_array($type, array(\'sub\', \'subs\')) && !empty(array_intersect(array(\'administrator\', \'special-subscriber\'), $user->roles))
        ) {
            // Check Subscriber if post is editable
            if(in_array($cap, array(\'edit_subs\', \'edit_others_subs\'))
            && in_array(\'special-subscriber\', $user->roles)
            && !in_array(\'administrator\', $user->roles)
            && !empty($args[2])
            &&  (   !in_array(get_post_status($args[2]), array(\'sub-editable\'))
                        && !in_array($_REQUEST[\'original_post_status\'], array(\'sub-editable\', \'auto-draft\'))    // Creating
                ||  get_post_status(get_post_meta($args[2], \'_adm_id\', TRUE)) === \'trash\'
                )
            ) {
                $allcaps[$cap] = FALSE;
            }
            // Add the cap
            if(!isset($allcaps[$cap])
            ) {
                $allcaps[$cap] = TRUE;  // All the _adm and _sub capabilities are made available.
            }
        }
    }
    return $allcaps;
}, 10, 4);

// Add stuff to force proper navigation
add_action(\'post_row_actions\', function($actions, $post) {
    // Add link to adm-cpt table entries to create child
    if(get_post_type($post) === \'adm-cpt\'
    && get_post_status($post) === \'adm-childable\'
    && current_user_can(\'edit_subs\')
    ) {
        $lbl = __(\'New \'). get_post_type_object(\'sub-cpt\')->labels->name;
        $actions[\'adm-cpt-create-sub-cpt\'] = sprintf(
            \'<a href="%s" aria-label="%s">%s</a>\',
            admin_url(\'post-new.php?post_type=sub-cpt&adm_id=\'. $post->ID),
            esc_attr(\'“\'. $lbl .\'”\'),
            $lbl
        );
    }
    // Return
    return $actions;
}, 10, 2);

// Modify publish metabox
add_action(\'post_submitbox_misc_actions\', function($post) {
    $arr = array();
    switch(get_post_type($post)) {
        case \'adm-cpt\':
            $arr = array(\'adm-childable\');
            break;
        case \'sub-cpt\':
            $arr = array(\'sub-editable\');
            break;
        default:
            return;
    }
    // Check that parent exists -- Should be in an init hook, but it\'s prettier here.
    if($_REQUEST[\'post_type\'] === \'sub-cpt\'
    &&  (empty($_REQUEST[\'adm_id\']) || get_post_type($_REQUEST[\'adm_id\']) !== \'adm-cpt\')
    &&  (empty($post->_adm_id) || get_post_type($post->_adm_id) !== \'adm-cpt\')
    ){
        ?><script>window.document.location.replace("<?= admin_url(\'edit.php?post_type=adm-cpt\') ?>")</script><?php
        return;
    }
    // Add custom post statuses
    ?><input type=\'hidden\' name=\'adm_id\' value=\'<?= $_REQUEST[\'adm_id\'] ?>\'><?php
    if(count($arr)) {
        ?><script>
        <?php foreach($arr as $k) { $obj = get_post_status_object($k); ?>
            jQuery("select#post_status").append("<option value=\\"<?= $k ?>\\"><?= $obj->label ?></option>");
            <?php if(get_post_status($post) == $k) { ?>
                jQuery("#post-status-display").text("<?= $obj->label ?>");
                jQuery("select#post_status").val("<?= $k ?>");
            <?php } ?>
        <?php } ?>
        </script><?php
    }
    // Display parent -- Informational
    if(!empty($_REQUEST[\'adm_id\'])
    || !empty($post->_adm_id)
    ) {
        $parent_id = $post->_adm_id;
        if(!$parent_id) $parent_id = $_REQUEST[\'adm_id\'];
        ?><div class="misc-pub-section misc-pub-adm-cpt">Parent:  <span id="post-status-display"><?= get_the_title($parent_id) ?></span></div><?php
    }
});

// Save parent ID
add_action(\'save_post_sub-cpt\', function($post_id, $post, $update) {
    // Ensure we continue only id a new child is created
    if(defined(\'DOING_AUTOSAVE\') && DOING_AUTOSAVE
    || get_post_type($post_id) !== \'sub-cpt\'
    || empty($_REQUEST[\'adm_id\'])
    || get_post_type($_REQUEST[\'adm_id\']) !== \'adm-cpt\'
    ) return;
    // Set parent ID
    update_post_meta($post_id, \'_adm_id\', $_REQUEST[\'adm_id\']);
}, 10, 3);

// Navigation when changed to uneditable
add_action(\'load-post.php\', function(){
    if(!empty($_REQUEST[\'post\'])
    && get_post_type($_REQUEST[\'post\']) === \'sub-cpt\'
    && !current_user_can(\'edit_subs\', $_REQUEST[\'post\'])
    ) {
        delete_post_meta($_REQUEST[\'post\'], \'_edit_lock\');
        wp_redirect(\'edit.php?post_type=sub-cpt\');
        die();
    }
});

这里的问题是，特别订阅者可以编辑常规帖子和评论。我知道这是edit_posts 功能，该功能允许编辑/创建all 职位类型。但是，删除它会阻止特殊订阅者创建sub-cpt 职位和授予edit_subs 无法解决问题。设置capabilities->create_post=special-subscriber 注册子CPT时。我可以限制订阅者创建adm-cpt 通过定义capabilities 注册帖子类型时的参数。但我不希望特殊订阅者能够编辑/创建除sub-cpt 键入，但我似乎不知道如何键入。

我找到了a Q&A 与主题相关，但这似乎不起作用。CPT映射到自定义功能，它们存在，并且user_has_cap filter动态授予每个功能。我甚至尝试在special-subscriber 角色定义。不管怎样，我相信变化很简单--“它是什么？”？

（如果您感兴趣，我还有另一个功能问题。当特殊订阅者设置子CPT时post_status 若要发布，将锁定帖子并将其转发到edit.php 但我想解锁帖子，让观众转发到edit.php?post_type=sub-cpt 就像在load-post.php 我的代码的钩子，我似乎不知道怎么做。）

UPDATE: 我已经将其隔离到菜单中CPT的位置。当CPT注册为使用register_post_type 选项show_in_menu=TRUE, 一切正常。但是，当CPT被添加为一个老式管理菜单项的子菜单时，情况就不一样了。添加UI并隐藏它会导致相同的问题，同时添加子页面并将其重定向到CPT的UI。示例：

// 1.)  Works as expected if user has every custom capability
add_action(\'init\', function() {
    register_post_type(\'sub-cpt\', array(
        \'label\'             => __(\'Subscriber/Admin CPT\'),
        \'show_ui\'           => TRUE,
        \'show_in_menu\'      => TRUE,    // Take note of this
        \'show_in_admin_bar\' => FALSE,
        \'capability_type\'   => \'sub\',
        \'map_meta_cap\'      => TRUE,
    ));
}

// 2.)  Same as #1 with the exception that access to \'post-new.php\' when "Add New" button is clicked is prohibited
add_action(\'init\', function() {
    register_post_type(\'sub-cpt\', array(
        \'label\'             => __(\'Subscriber/Admin CPT\'),
        \'show_ui\'           => TRUE,
        \'show_in_menu\'      => \'my-menu-item\',  // Take note of this
        \'show_in_admin_bar\' => FALSE,
        \'capability_type\'   => \'sub\',
        \'map_meta_cap\'      => TRUE,
    ));
}
add_action(\'admin_menu\', function() {
    add_menu_page(
        \'CPT in title bar\',
        \'CPT in menu\',
        \'edit_subs\',
        \'my-menu-item\',
        \'\'
    );
}

// 3.)  Breaks the same as #2
add_action(\'init\', function() {
    register_post_type(\'sub-cpt\', array(
        \'label\'             => __(\'Subscriber/Admin CPT\'),
        \'show_ui\'           => TRUE,
        \'show_in_menu\'      => FALSE,   // Take note of this
        \'show_in_admin_bar\' => FALSE,
        \'capability_type\'   => \'sub\',
        \'map_meta_cap\'      => TRUE,
    ));
}
add_action(\'admin_menu\', function() {
    global $submenu;
    add_menu_page(
        \'CPT in title bar\',
        \'CPT in menu\',
        \'edit_subs\',
        \'my-menu-item\'
    );
    add_submenu_page(
        \'my-menu-item\',
        get_post_type_object(\'sub-cpt\')->label,
        get_post_type_object(\'sub-cpt\')->label,
        \'edit_subs\',
        \'my-menu-item-sub\'
    );
    // Change link
    $url = \'edit.php?post_type=sub-cpt\';
    $submenu[\'my-menu-item\'][1][2] = admin_url($url);   // Set URL to view CPT
    unset($submenu[\'my-menu-item\'][0]);             // Remove WP generated menu item
});

如果我可以将“添加新”功能作为子页面与CPT一起使用，我想我的问题会得到解决，因为edit_posts 给我带来麻烦的能力可以具体映射到edit_subs. 有人知道怎么做吗？

add_action(\'_network_admin_menu\', \'pick_out_the_little_bugger\');
add_action(\'_user_admin_menu\', \'pick_out_the_little_bugger\');
add_action(\'_admin_menu\', \'pick_out_the_little_bugger\');
function pick_out_the_little_bugger() {
    // If the current user can not edit posts, unset the post menu
    if(!current_user_can(\'edit_posts\')) {
        global $submenu;
        $problem_child = remove_menu_page(\'edit.php\');  // Kill its parent and get its lineage.
        unset($submenu[$problem_child[2]]);         // "unset" is just too nice for this wormy thing.
    }
}

/*
This is due to a bug that doesn\'t grant permission to the post-new.php unless there is a
submenu with the link accesible for the user.
*/
global $submenu;
$submenu[\'your_menu\'][] = array(
    \'Hide me\', # Do something to hide it or just leave it blank.
    \'create_posts\',
    \'post-new.php?post_type=your_post_type\',
);  

class Admin_Menu_Page {
    const MENU_SLUG = \'my-menu-slug\';
    // ...
    public static function get_CPT_show_in_menu() {
        if ( current_user_can( \'edit_posts\' ) ) {
            $result = self::MENU_SLUG;
        } else {
            $result = TRUE;
        }
        return $result;
    }
    public static function create_menu() {
        if ( self::get_CPT_show_in_menu() === self::MENU_SLUG ) {
            // Create my custom menu page
        }
    }
}

class My_CPT {
    const POST_TYPE = \'my-post-type\';
    // ...
    public static function register() {
        $args = array(
            // ...
            \'show_in_menu\'    => Admin_Menu_Page::get_CPT_show_in_menu(),
            // ...
        );
        register_post_type( self::POST_TYPE, $args );
    }
}