WP custom_pre_get_posts 打破主题
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【中文标题】WP custom_pre_get_posts 打破主题【英文标题】：WP custom_pre_get_posts breaks theme 【发布时间】：2014-07-20 09:56:22 【问题描述】：我几周前添加了这段代码，但它昨晚突然停止工作，怎么可能？它在本地服务器上运行良好，但在共享主机上却不行。 Local 正在运行 php 5.5.3，host 正在运行 5.4，但我刚刚请求将该特定子域升级到 5.5，以防万一。
使用子主题。父主题创建了一个名为 Portfolio 的自定义帖子类型，其中所有帖子的 slug 为 /portfolio-item/。在我的子主题中，我添加了两件事： 1. 一个新的自定义帖子类型，称为隐藏页面，我使用了我在网上找到的删除 slug 的代码，所以它只是 domain.com/page-name。 2. 我添加了更多引用 Portfolio 类型的代码，这也删除了 slug。
一切都运行良好，但突然之间，所有标准页面 404（并且隐藏在后端，但不在数据库中，这不是数据库问题！），并且投资组合帖子神奇地移动到博客（常规标准帖子）。如果您注释掉 custom_pre_get_posts 行 (132)，问题就解决了。但是客户需要在没有蛞蝓的情况下保持网址干净。所以我不想让它保持原样。
这是子主题的functions.php：
<?php
function evol_child_scripts()
wp_enqueue_style( 'style', get_stylesheet_directory_uri() . '/stylesheets/css/style.css' );
add_action( 'wp_enqueue_scripts', 'evol_child_scripts' );
/*function codex_custom_init()
$args = array(
'public' => true,
'label' => 'Hidden Pages'
);
register_post_type( 'hidden', $args );
add_action( 'init', 'codex_custom_init' );
*/
/**
* Register a custom post type but don't do anything fancy
*/
register_post_type( 'hidden', array( 'label' => 'Hidden Pages', 'public' => true, 'capability_type' => 'post', 'show_ui' => true, 'query_var' => true, 'supports' => array( 'title', 'editor', 'thumbnail' ) ) );
/**
* Remove the slug from published post permalinks. Only affect our CPT though.
*/
function vipx_remove_cpt_slug( $post_link, $post, $leavename )
if ( ! in_array( $post->post_type, array( 'hidden' ) )
|| 'publish' != $post->post_status )
return $post_link;
$post_link = str_replace( '/' . $post->post_type . '/', '/', $post_link );
return $post_link;
add_filter( 'post_type_link', 'vipx_remove_cpt_slug', 10, 3 );
/**
* Some hackery to have WordPress match postname to any of our public
* post types. All of our public post types can have /post-name/ as
* the slug, so they better be unique across all posts. Typically core
* only accounts for posts and pages where the slug is /post-name/
*/
function vipx_parse_request_tricksy( $query )
// Only noop the main query
if ( ! $query->is_main_query() )
return;
// Only noop our very specific rewrite rule match
if ( 2 != count( $query->query )
|| ! isset( $query->query['page'] ) )
return;
// 'name' will be set if post permalinks are just post_name,
// otherwise the page rule will match
if ( ! empty( $query->query['name'] ) )
$query->set( 'post_type', array( 'post', 'hidden', 'page' ) );
add_action( 'pre_get_posts', 'vipx_parse_request_tricksy' );
function remove_search_filter ()
remove_filter( 'pre_get_posts', 'tr_search_filter' );
add_action( 'init', 'remove_search_filter');
function remove_icons()
wp_dequeue_style( 'icons' );
add_action( 'wp_enqueue_scripts', 'remove_icons' );
function tr_widgets_init_2()
if ( ot_get_option( 'tr_sidebars' ) ) :
$tr_sidebars = ot_get_option( 'tr_sidebars' );
foreach ( $tr_sidebars as $tr_sidebar )
register_sidebar( array(
'id' => $tr_sidebar["id"],
'name' => $tr_sidebar["title"],
'before_widget' => '<div class="widget %2$s">',
'after_widget' => '</div>',
'before_title' => '<h6 class="widget-title">',
'after_title' => '</h6>',
));
endif;
;
add_action( 'widgets_init', 'tr_widgets_init_2' );
add_filter('post_type_link','custom_post_type_link', 10, 3);
function custom_post_type_link($permalink, $post, $leavename)
$url_components = parse_url($permalink);
$post_path = $url_components['path'];
$post_name = end((explode('/', trim($post_path, '/'))));
if(!empty($post_name))
switch($post->post_type)
case 'portfolio':
$permalink = str_replace($post_path, '/' . $post_name . '/', $permalink);
break;
return $permalink;
function custom_pre_get_posts($query)
global $wpdb;
if(!$query->is_main_query())
return;
$post_name = $query->get('name');
$post_type = $wpdb->get_var( $wpdb->prepare( 'SELECT post_type FROM ' . $wpdb->posts . ' WHERE post_name = %s LIMIT 1', $post_name ) );
switch($post_type)
case 'portfolio':
$query->set('portfolio', $post_name);
$query->set('post_type', $post_type);
$query->is_single = true;
$query->is_page = false;
break;
return $query;
add_action('pre_get_posts','custom_pre_get_posts');
function fb_add_search_box ( $items, $args )
// only on primary menu
if( 'primary' === $args -> theme_location )
$items .= '<li class="menu-item menu-item-search">' . get_search_form( FALSE ) . '</li>';
return $items;
add_filter( 'wp_nav_menu_items', 'fb_add_search_box', 10, 2 );
// Callback function to insert 'styleselect' into the $buttons array
function my_mce_buttons_2( $buttons )
array_unshift( $buttons, 'styleselect' );
return $buttons;
// Register our callback to the appropriate filter
add_filter('mce_buttons_2', 'my_mce_buttons_2');
// Callback function to filter the MCE settings
function my_mce_before_init_insert_formats( $init_array )
// Define the style_formats array
$style_formats = array(
// Each array child is a format with it's own settings
array(
'title' => 'Image Text',
'block' => 'p',
'classes' => 'image-text',
),
array(
'title' => 'Image Text no Overlay',
'block' => 'p',
'classes' => 'image-text-2',
),
array(
'title' => 'w/ gray background',
'inline' => 'span',
'exact' => true,
'classes' => 'gray-background',
),
array(
'title' => 'w/ white background',
'inline' => 'span',
'exact' => true,
'classes' => 'white-background',
),
array(
'title' => 'Image Text no Indent',
'block' => 'p',
'classes' => 'image-text-3',
),
array(
'title' => 'Button',
'inline' => 'a',
'exact' => true,
'classes' => 'button small',
),
array(
'title' => 'Blog Image Caption',
'block' => 'p',
'classes' => 'caption',
),
array(
'title' => 'Signature',
'inline' => 'span',
'exact' => true,
'classes' => 'sign',
),
);
// Insert the array, JSON ENCODED, into 'style_formats'
$init_array['style_formats'] = json_encode( $style_formats );
return $init_array;
// Attach callback to 'tiny_mce_before_init'
add_filter( 'tiny_mce_before_init', 'my_mce_before_init_insert_formats' );
这是父函数.php：
<?php
/*----------------------------------------------------------------------------*/
/* Sets up theme defaults and registers support for various WordPress features.
/*----------------------------------------------------------------------------*/
function tr_theme_setup()
load_theme_textdomain( 'themerain', get_template_directory() . '/languages' );
add_theme_support( 'automatic-feed-links' );
add_theme_support( 'html5', array( 'search-form', 'comment-form', 'comment-list' ) );
register_nav_menu( 'primary', 'Navigation Menu' );
add_theme_support( 'post-thumbnails' );
add_image_size( 'portfolio', 740, 540, true );
add_action( 'after_setup_theme', 'tr_theme_setup' );
/*----------------------------------------------------------------------------*/
/* Sets up the content width value based on the theme's design and stylesheet.
/*----------------------------------------------------------------------------*/
if ( ! isset( $content_width ) ) $content_width = 780;
/*----------------------------------------------------------------------------*/
/* Load Theme Options
/*----------------------------------------------------------------------------*/
add_filter( 'ot_show_pages', '__return_false' );
add_filter( 'ot_show_new_layout', '__return_false' );
add_filter( 'ot_theme_mode', '__return_true' );
load_template( trailingslashit( get_template_directory() ) . 'option-tree/ot-loader.php' );
load_template( trailingslashit( get_template_directory() ) . 'includes/theme-options.php' );
load_template( trailingslashit( get_template_directory() ) . 'includes/meta-boxes.php' );
load_template( trailingslashit( get_template_directory() ) . 'includes/theme-functions.php' );
/*----------------------------------------------------------------------------*/
/* Register Sidebars
/*----------------------------------------------------------------------------*/
function tr_widgets_init()
register_sidebar( array(
'id' => 'sidebar',
'name' => 'Default Sidebar',
'before_widget' => '<div class="widget %2$s">',
'after_widget' => '</div>',
'before_title' => '<h6 class="widget-title">',
'after_title' => '</h6>',
));
register_sidebar( array(
'id' => 'footer-sidebar',
'name' => 'Footer Sidebar',
'before_widget' => '<div class="widget %2$s">',
'after_widget' => '</div>',
'before_title' => '<h6 class="widget-title">',
'after_title' => '</h6>',
));
if ( ot_get_option( 'tr_sidebars' ) ) :
$tr_sidebars = ot_get_option( 'tr_sidebars' );
foreach ( $tr_sidebars as $tr_sidebar )
register_sidebar( array(
'id' => $tr_sidebar["id"],
'name' => $tr_sidebar["title"],
'before_widget' => '<div class="widget %2$s">',
'after_widget' => '</div>',
'before_title' => '<h6 class="widget-title">',
'after_title' => '</h6>',
));
endif;
;
add_action( 'widgets_init', 'tr_widgets_init' );
/*----------------------------------------------------------------------------*/
/* Register and load CSS & jQuery
/*----------------------------------------------------------------------------*/
function tr_enqueue_scripts()
wp_enqueue_style( 'style', get_stylesheet_uri() );
wp_enqueue_style( 'icons', get_template_directory_uri() . '/assets/css/icons.css' );
wp_enqueue_style( 'magnific', get_template_directory_uri() . '/assets/css/magnific-popup.css' );
wp_enqueue_script( 'jquery' );
wp_enqueue_script( 'custom', get_template_directory_uri() . '/assets/js/jquery.custom.js', 'jquery' );
wp_enqueue_script( 'flexslider', get_template_directory_uri() . '/assets/js/jquery.flexslider.min.js', 'jquery' );
wp_enqueue_script( 'isotope', get_template_directory_uri() . '/assets/js/jquery.isotope.min.js', 'jquery' );
wp_enqueue_script( 'magnific', get_template_directory_uri() . '/assets/js/jquery.magnific-popup.min.js', 'jquery' );
wp_enqueue_script( 'validation', get_template_directory_uri() . '/assets/js/jquery.validate.min.js', 'jquery' );
if ( is_singular() ) wp_enqueue_script( 'comment-reply' );
add_action( 'wp_enqueue_scripts', 'tr_enqueue_scripts' );
/*----------------------------------------------------------------------------*/
/* Load Widgets
/*----------------------------------------------------------------------------*/
include( "includes/widget-recent-projects.php" );
/*----------------------------------------------------------------------------*/
/* Configure Pagination
/*----------------------------------------------------------------------------*/
function tr_pagination()
global $wp_query, $wp_rewrite;
$pages = '';
$total = 1;
$max = $wp_query->max_num_pages;
if ( ! $current = get_query_var( 'paged' ) ) $current = 1;
$args['base'] = str_replace( 999999999, '%#%', get_pagenum_link( 999999999 ) );
$args['total'] = $max;
$args['current'] = $current;
$args['end_size'] = 1;
$args['mid_size'] = 3;
$args['prev_text'] = '<i class="fa-angle-left"></i> Previous';
$args['next_text'] = 'Next <i class="fa-angle-right"></i>';
$args['type'] = 'list';
if ( $max > 1 ) echo '<div id="pagination">';
if ( $total == 1 && $max > 1 );
echo $pages . paginate_links( $args );
if ( $max > 1 ) echo '</div>';
/*----------------------------------------------------------------------------*/
/* Configure Excerpt
/*----------------------------------------------------------------------------*/
function new_excerpt_more( $more )
return ' ...';
add_filter( 'excerpt_more', 'new_excerpt_more' );
/*-----------------------------------------------------------------------------------*/
/* Configure Tag Cloud
/*-----------------------------------------------------------------------------------*/
function tag_cloud_filter($args = array())
$args['smallest'] = 12;
$args['largest'] = 12;
$args['unit'] = 'px';
return $args;
add_filter('widget_tag_cloud_args', 'tag_cloud_filter', 90);
/*----------------------------------------------------------------------------*/
/* Exclude Pages from Search
/*----------------------------------------------------------------------------*/
function tr_search_filter( $filter )
if ( $filter->is_search )
$filter->set( 'post_type', 'post' );
return $filter;
add_filter( 'pre_get_posts', 'tr_search_filter' );
/*----------------------------------------------------------------------------*/
/* Add Portfolio Post Types
/*----------------------------------------------------------------------------*/
function tr_portfolio()
$labels = array(
'name' => 'Portfolio',
'singular_name' => 'Portfolio Item',
'add_new' => 'Add New',
'add_new_item' => 'Add New Portfolio Item',
'edit_item' => 'Edit Portfolio Item',
'new_item' => 'New Portfolio Items',
'view_item' => 'View Portfolio Item',
'search_items' => 'Search Portfolio Items',
'not_found' => 'No Portfolio Items found',
'not_found_in_trash' => 'No Portfolio Items found in Trash',
'parent_item_colon' => ''
);
$args = array(
'labels' => $labels,
'public' => true,
'exclude_from_search' => false,
'publicly_queryable' => true,
'show_ui' => true,
'query_var' => true,
'capability_type' => 'post',
'hierarchical' => false,
'menu_position' => 4,
'rewrite' => array( 'slug' => 'portfolio-item' ),
'supports' => array( 'title', 'editor', 'thumbnail' )
);
register_post_type( 'portfolio', $args );
register_taxonomy(
"portfolio-category", array( "portfolio" ), array(
"hierarchical" => true,
"label" => "Portfolio Categories",
"singular_label" => "Portfolio Categories",
"rewrite" => true,
"query_var" => true
)
);
add_action( 'init', 'tr_portfolio' );
/*----------------------------------------------------------------------------*/
/* Add Gallery Post Types
/*----------------------------------------------------------------------------*/
function tr_gallery()
$labels = array(
'name' => 'Gallery',
'singular_name' => 'Gallery Item',
'add_new' => 'Add New',
'add_new_item' => 'Add New Gallery Item',
'edit_item' => 'Edit Gallery Item',
'new_item' => 'New Gallery Items',
'view_item' => 'View Gallery Item',
'search_items' => 'Search Gallery Items',
'not_found' => 'No Gallery Items found',
'not_found_in_trash' => 'No Gallery Items found in Trash',
'parent_item_colon' => ''
);
$args = array(
'labels' => $labels,
'public' => true,
'exclude_from_search' => true,
'publicly_queryable' => true,
'show_ui' => true,
'query_var' => true,
'capability_type' => 'post',
'hierarchical' => false,
'menu_position' => 4,
'rewrite' => array( 'slug' => 'gallery-item' ),
'supports' => array( 'title', 'thumbnail' )
);
register_post_type( 'gallery', $args );
register_taxonomy(
"gallery-category", array( "gallery" ), array(
"hierarchical" => true,
"label" => "Gallery Categories",
"singular_label" => "Gallery Categories",
"rewrite" => true,
"query_var" => true
)
);
add_action( 'init', 'tr_gallery' );
/*----------------------------------------------------------------------------*/
/* Add a Custom Taxonomy to the Post Class
/*----------------------------------------------------------------------------*/
function custom_portfolio_post_class( $classes, $class, $ID )
$taxonomy = 'portfolio-category';
$terms = get_the_terms( (int) $ID, $taxonomy );
if ( ! empty( $terms ) )
foreach ( (array) $terms as $order => $term )
if ( ! in_array( $term->slug, $classes ) )
$classes[] = $term->slug;
return $classes;
add_filter( 'post_class', 'custom_portfolio_post_class', 10, 3 );
function custom_gallery_post_class( $classes, $class, $ID )
$taxonomy = 'gallery-category';
$terms = get_the_terms( (int) $ID, $taxonomy );
if ( ! empty( $terms ) )
foreach ( (array) $terms as $order => $term )
if ( ! in_array( $term->slug, $classes ) )
$classes[] = $term->slug;
return $classes;
add_filter( 'post_class', 'custom_gallery_post_class', 10, 3 );
/*----------------------------------------------------------------------------*/
/* Register the Required Plugins
/*----------------------------------------------------------------------------*/
require_once dirname( __FILE__ ) . '/includes/plugin-activation.php';
function tr_register_required_plugins()
$plugins = array(
array(
'name' => 'Rain Shortcodes',
'slug' => 'rain-shortcodes',
'source' => get_stylesheet_directory() . '/includes/plugins/rain-shortcodes.zip',
'required' => true,
'version' => '',
'force_activation' => false,
'force_deactivation' => false,
'external_url' => '',
)
);
$theme_text_domain = 'tgmpa';
$config = array(
'domain' => $theme_text_domain,
'default_path' => '',
'parent_menu_slug' => 'themes.php',
'parent_url_slug' => 'themes.php',
'menu' => 'install-required-plugins',
'has_notices' => true,
'is_automatic' => true,
'message' => '',
'strings' => array(
'page_title' => __( 'Install Required Plugins', $theme_text_domain ),
'menu_title' => __( 'Install Plugins', $theme_text_domain ),
'installing' => __( 'Installing Plugin: %s', $theme_text_domain ), // %1$s = plugin name
'oops' => __( 'Something went wrong with the plugin API.', $theme_text_domain ),
'notice_can_install_required' => _n_noop( 'This theme requires the following plugin: %1$s.', 'This theme requires the following plugins: %1$s.' ),
'notice_can_install_recommended' => _n_noop( 'This theme recommends the following plugin: %1$s.', 'This theme recommends the following plugins: %1$s.' ),
'notice_cannot_install' => _n_noop( 'Sorry, but you do not have the correct permissions to install the %s plugin. Contact the administrator of this site for help on getting the plugin installed.', 'Sorry, but you do not have the correct permissions to install the %s plugins. Contact the administrator of this site for help on getting the plugins installed.' ),
'notice_can_activate_required' => _n_noop( 'The following required plugin is currently inactive: %1$s.', 'The following required plugins are currently inactive: %1$s.' ),
'notice_can_activate_recommended' => _n_noop( 'The following recommended plugin is currently inactive: %1$s.', 'The following recommended plugins are currently inactive: %1$s.' ),
'notice_cannot_activate' => _n_noop( 'Sorry, but you do not have the correct permissions to activate the %s plugin. Contact the administrator of this site for help on getting the plugin activated.', 'Sorry, but you do not have the correct permissions to activate the %s plugins. Contact the administrator of this site for help on getting the plugins activated.' ),
'notice_ask_to_update' => _n_noop( 'The following plugin needs to be updated to its latest version to ensure maximum compatibility with this theme: %1$s.', 'The following plugins need to be updated to their latest version to ensure maximum compatibility with this theme: %1$s.' ),
'notice_cannot_update' => _n_noop( 'Sorry, but you do not have the correct permissions to update the %s plugin. Contact the administrator of this site for help on getting the plugin updated.', 'Sorry, but you do not have the correct permissions to update the %s plugins. Contact the administrator of this site for help on getting the plugins updated.' ),
'install_link' => _n_noop( 'Begin installing plugin', 'Begin installing plugins' ),
'activate_link' => _n_noop( 'Activate installed plugin', 'Activate installed plugins' ),
'return' => __( 'Return to Required Plugins Installer', $theme_text_domain ),
'plugin_activated' => __( 'Plugin activated successfully.', $theme_text_domain ),
'complete' => __( 'All plugins installed and activated successfully. %s', $theme_text_domain ),
'nag_type' => 'updated'
)
);
tgmpa( $plugins, $config );
add_action( 'tgmpa_register', 'tr_register_required_plugins' );
?>
当 wp_debug 设置为 true 时，返回：
Strict Standards: Only variables should be passed by reference in
[path redacted]/functions.php on line 97
这是指这一行：
$post_name = end(explode('/', trim($post_path, '/')));
这仍然在错误日志中，但是在更改后，它在管理端没有，这是否意味着它已修复？
儿童主题代码来自这里：https://gist.github.com/stefanbc/6620151 和 http://www.markwarddesign.com/2014/02/remove-custom-post-type-slug-permalink/
所以，如果有人知道如何修改此文件以使一切恢复正常工作，那就太好了。实际上，我们距离发布还有几天的时间。呃。谢谢！
【问题讨论】：
【参考方案1】：问题不在于错误所述的 Wordpress，它都是纯 PHP。您应该对该行稍作改动（用括号括起来 explode()）：
$post_name = end((explode('/', trim($post_path, '/'))));
【讨论】：
嗨雷沃！非常感谢，这确实消除了错误，所以现在我们没有错误了。但不幸的是，它并没有解决问题。在仍然混乱的页面上仍然是 404ing。有什么后续步骤吗？ （我应该更新上面的代码以反映这种变化，还是应该离开它？） @Alicia 同时设置WP_DEBUG 和WP_DEBUG_LOG。但是您已经启用了 WP_DEBUG，您需要在此之后添加此行：define('WP_DEBUG_LOG', true);。然后转到您的网站以创建要创建的日志并检查 /wp-content/ 目录中的 debug.log 日志文件。最好也为您的帖子添加更新。
好的，如果你的意思是error_log，这里是错误：PHP致命错误：无法在evol/functions.php中重新声明vipx_remove_cpt_slug()（之前在evol-child/functions.php:26中声明）在第 294 行，这是指我想我也必须将该部分添加到父主题的功能中。
@Alicia 所以就在那里！您已经在父模板中声明了该函数，无需重新声明。
好吧，问题是我只是看了看......它不存在。让我添加父functions.php。【参考方案2】：
鉴于我的 PHP 水平并且不想重写涉及父主题和子主题功能的代码，我无法找到解决此问题的方法。我最终删除了所有试图删除 slug 的代码。我交叉手指并安装了这个过时的插件，它工作。因此，对于任何人以供将来参考，我想您可以避免使用代码而直接使用它！
https://wordpress.org/plugins/remove-slug-from-custom-post-type/
【讨论】：
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