WordPress有原生的文章置顶功能,不过只支持在首页让在顶部显示,其他如分类页、标签页、作者页和日期页等存档页面,就没法让在顶部显示了,只能按默认的顺序显示。有很多网友早前向我问过怎么解决这样的问题,当时查阅了一些没有解决就被搁置了。现在参考wp-includes/query.php中首页置顶的代码,稍微修改一下,可以让分类页、标签页、作者页和日期页等存档页面也能像首页一样在顶部显示其范围内的置顶文章。把下面的代码放到当前主题下的functions.php中就可以了:

 

add_filter('the_posts',  'putStickyOnTop' );
function putStickyOnTop( $posts ) {
   if(is_home() || !is_main_query() || !is_archive())
     return $posts;
     
   global $wp_query;

   $sticky_posts = get_option('sticky_posts');
   
   if ( $wp_query->query_vars['paged'] <= 1 && is_array($sticky_posts) && !empty($sticky_posts) && !get_query_var('ignore_sticky_posts') ) {        $stickies1 = get_posts( array( 'post__in' => $sticky_posts ) );
     foreach ( $stickies1 as $sticky_post1 ) {
       // 判断当前是否分类页 
      if($wp_query->is_category == 1 && !has_category($wp_query->query_vars['cat'], $sticky_post1->ID)) {
         // 去除不属于本分类的文章
        $offset1 = array_search($sticky_post1->ID, $sticky_posts);
         unset( $sticky_posts[$offset1] );
       }
       if($wp_query->is_tag == 1 && has_tag($wp_query->query_vars['tag'], $sticky_post1->ID)) {
         // 去除不属于本标签的文章
        $offset1 = array_search($sticky_post1->ID, $sticky_posts);
         unset( $sticky_posts[$offset1] );
       }
       if($wp_query->is_year == 1 && date_i18n('Y', strtotime($sticky_post1->post_date))!=$wp_query->query['m']) {
         // 去除不属于本年份的文章
        $offset1 = array_search($sticky_post1->ID, $sticky_posts);
         unset( $sticky_posts[$offset1] );
       }
       if($wp_query->is_month == 1 && date_i18n('Ym', strtotime($sticky_post1->post_date))!=$wp_query->query['m']) {
         // 去除不属于本月份的文章
        $offset1 = array_search($sticky_post1->ID, $sticky_posts);
         unset( $sticky_posts[$offset1] );
       }
       if($wp_query->is_day == 1 && date_i18n('Ymd', strtotime($sticky_post1->post_date))!=$wp_query->query['m']) {
         // 去除不属于本日期的文章
        $offset1 = array_search($sticky_post1->ID, $sticky_posts);
         unset( $sticky_posts[$offset1] );
       }
       if($wp_query->is_author == 1 && $sticky_post1->post_author != $wp_query->query_vars['author']) {
         // 去除不属于本作者的文章
        $offset1 = array_search($sticky_post1->ID, $sticky_posts);
         unset( $sticky_posts[$offset1] );
       }
     }
   
     $num_posts = count($posts);
     $sticky_offset = 0;
     // Loop over posts and relocate stickies to the front.
     for ( $i = 0; $i < $num_posts; $i++ ) {
       if ( in_array($posts[$i]->ID, $sticky_posts) ) {
         $sticky_post = $posts[$i];
         // Remove sticky from current position
         array_splice($posts, $i, 1);
         // Move to front, after other stickies
         array_splice($posts, $sticky_offset, 0, array($sticky_post));
         // Increment the sticky offset. The next sticky will be placed at this offset.
         $sticky_offset++;
         // Remove post from sticky posts array
         $offset = array_search($sticky_post->ID, $sticky_posts);
         unset( $sticky_posts[$offset] );
       }
     }

     // If any posts have been excluded specifically, Ignore those that are sticky.
     if ( !empty($sticky_posts) && !empty($wp_query->query_vars['post__not_in'] ) )
       $sticky_posts = array_diff($sticky_posts, $wp_query->query_vars['post__not_in']);

     // Fetch sticky posts that weren't in the query results
     if ( !empty($sticky_posts) ) {
       $stickies = get_posts( array(
         'post__in' => $sticky_posts,
         'post_type' => $wp_query->query_vars['post_type'],
         'post_status' => 'publish',
         'nopaging' => true
       ) );

       foreach ( $stickies as $sticky_post ) {
         array_splice( $posts, $sticky_offset, 0, array( $sticky_post ) );
         $sticky_offset++;
       }
     }
   }
   
   return $posts;
}

 

代码说明

1、如果你想让存档页也都显示全部置顶文章,那么就删掉11-43行的代码;
2、如果不想在某分类页显示置顶文章,将第 3 行的

 

 

if(

 改成:

// abc是分类名称
if ( is_category( 'abc' ) ||

 3、如果不想某标签页显示置顶文章,将第 3 行的

if(

 改成:

// abc是标签名称
if ( is_tag( 'abc' ) ||

 

4、如果不想某作者页显示置顶文章,将第 3 行的

if(

改成:

 

// abc是作者昵称
if ( is_author( 'abc' ) ||

 5、以上代码只对主循环有效,如果你在存档页使用WP_Query或query_posts来获取文章列表,又像让这些列表顶部显示置顶文章,可以把第3行代码中的以下代码删掉(注意:可能会导致文章显示数量跟你设置的不一样):

 

 

|| !is_main_query()

 

置顶样式

     如果你想给置顶文章添加样式,将以下代码添加到functions.php中,会给置顶文章添加一个名为 sticky 的class。具体的css代码,再自行自定义:

 

 

add_filter('post_class',  'addStickyClass' ,10,3 );
function addStickyClass( $classes, $class, $post_id ){
   if( is_sticky() && is_category() && !isset( $classes['sticky'] ) ){
     $classes[] = 'sticky';
   }
   
   return $classes;
}

 转自:露兜博客