问题描述

我正在开发一个 multi-user WordPress 设置，并使它成为一个特定类型的用户只能看到和他们已经创作的帖子，图像，页面等交互。使其发生的代码如下所示：

add_filter('pre_get_posts', 'current_author_posts');

function current_author_posts($query) {

    if ($query->is_admin && current_user_can('artist')) {
        global $user_ID;
        $query->set('author', $user_ID);
    }

    return $query;
}

这在管理界面中工作得很好，但是所有的帖子计数都显示不正确：

您是否知道任何过滤器或钩子来操纵这些数字，并且在帖子，页面，媒体和自定义帖子类型之间是否正确？

非常感谢。

最佳解决方案

我得到这几乎工作，但需要改进以适应问题的细节，并处理附件和 Post-Types 不同 (见代码中的注释)…

首先，我认为值得注意的是我如何找到过滤器：apply_filters( 'views_' . $screen->id, $views )

  • 检查元素

  • 在/wp-admin 和/wp-includes 中进行全局搜索，用于 subsubsub(有趣的类名称，btw)…

  • 这里是：/wp-admin/includes/class-wp-list-table.php

foreach( array( 'edit-post', 'edit-page', 'edit-movie', 'upload' ) as $hook )
    add_filter( "views_$hook" , 'wpse_30331_custom_view_count', 10, 1);

function wpse_30331_custom_view_count( $views )
{
    global $current_screen;
    switch( $current_screen->id )
    {
        case 'edit-post':
            $views = wpse_30331_manipulate_views( 'post', $views );
            break;
        case 'edit-page':
            $views = wpse_30331_manipulate_views( 'page', $views );
            break;
        case 'edit-movie':
            $views = wpse_30331_manipulate_views( 'movie', $views );
            break;
        case 'upload':
            $views = wpse_30331_manipulate_views( 'attachment', $views );
            break;
    }
    return $views;
}

function wpse_30331_manipulate_views( $what, $views )
{
    global $user_ID, $wpdb;

    /*
     * This is not working for me, 'artist' and 'administrator' are passing this condition (?)
     */
    if ( !current_user_can('artist') )
        return $views;

    /*
     * This needs refining, and maybe a better method
     * e.g. Attachments have completely different counts
     */
    $total = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts WHERE (post_status = 'publish' OR post_status = 'draft' OR post_status = 'pending') AND (post_author = '$user_ID'  AND post_type = '$what' ) ");
    $publish = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts WHERE post_status = 'publish' AND post_author = '$user_ID' AND post_type = '$what' ");
    $draft = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts WHERE post_status = 'draft' AND post_author = '$user_ID' AND post_type = '$what' ");
    $pending = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts WHERE post_status = 'pending' AND post_author = '$user_ID' AND post_type = '$what' ");

    /*
     * Only tested with Posts/Pages
     * - there are moments where Draft and Pending shouldn't return any value
     */
    $views['all'] = preg_replace( '/(.+)/U', '('.$total.')', $views['all'] );
    $views['publish'] = preg_replace( '/(.+)/U', '('.$publish.')', $views['publish'] );
    $views['draft'] = preg_replace( '/(.+)/U', '('.$draft.')', $views['draft'] );
    $views['pending'] = preg_replace( '/(.+)/U', '('.$pending.')', $views['pending'] );

    // Debug info
    //echo 'Default counts: <pre>'.print_r($views,true).'</pre>';
    //echo '<hr><hr>';
    //echo 'Query for this screen of this post_type: <b>'.$what.'</b><pre>'.print_r($wp_query,true).'</pre>';

    return $views;
}

参考文献

注：本文内容整合自 Google/Baidu/Bing 辅助翻译的英文资料结果。如果您对结果不满意，可以加入我们改善翻译效果：薇晓朵技术论坛。