面包屑(Breadcrumb)是網(wǎng)站常用的導(dǎo)航功能,在Wordpress網(wǎng)站上如何添加這一功能呢?
/**
* WordPress 添加面包屑導(dǎo)航
*/
function cmp_breadcrumbs() {
$delimiter = '»'; // 分隔符
$before = '<span class="current">'; // 在當(dāng)前鏈接前插入
$after = '</span>'; // 在當(dāng)前鏈接后插入
if ( !is_home() && !is_front_page() || is_paged() ) {
echo '<div itemscope itemtype="http://schema.org/WebPage" id="crumbs">'.__( 'You are here:' , 'cmp' );
global $post;
$homeLink = home_url();
echo ' <a itemprop="breadcrumb" href="' . $homeLink . '">' . __( 'Home' , 'cmp' ) . '</a> ' . $delimiter . ' ';
if ( is_category() ) { // 分類 存檔
global $wp_query;
$cat_obj = $wp_query->get_queried_object();
$thisCat = $cat_obj->term_id;
$thisCat = get_category($thisCat);
$parentCat = get_category($thisCat->parent);
if ($thisCat->parent != 0){
$cat_code = get_category_parents($parentCat, TRUE, ' ' . $delimiter . ' ');
echo $cat_code = str_replace ('<a','<a itemprop="breadcrumb"', $cat_code );
}
echo $before . '' . single_cat_title('', false) . '' . $after;
} elseif ( is_day() ) { // 天 存檔
echo '<a itemprop="breadcrumb" href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a> ' . $delimiter . ' ';
echo '<a itemprop="breadcrumb" href="' . get_month_link(get_the_time('Y'),get_the_time('m')) . '">' . get_the_time('F') . '</a> ' . $delimiter . ' ';
echo $before . get_the_time('d') . $after;
} elseif ( is_month() ) { // 月 存檔
echo '<a itemprop="breadcrumb" href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a> ' . $delimiter . ' ';
echo $before . get_the_time('F') . $after;
} elseif ( is_year() ) { // 年 存檔
echo $before . get_the_time('Y') . $after;
} elseif ( is_single() && !is_attachment() ) { // 文章
if ( get_post_type() != 'post' ) { // 自定義文章類型
$post_type = get_post_type_object(get_post_type());
$slug = $post_type->rewrite;
echo '<a itemprop="breadcrumb" href="' . $homeLink . '/' . $slug['slug'] . '/">' . $post_type->labels->singular_name . '</a> ' . $delimiter . ' ';
echo $before . get_the_title() . $after;
} else { // 文章 post
$cat = get_the_category(); $cat = $cat[0];
$cat_code = get_category_parents($cat, TRUE, ' ' . $delimiter . ' ');
echo $cat_code = str_replace ('<a','<a itemprop="breadcrumb"', $cat_code );
echo $before . get_the_title() . $after;
}
} elseif ( !is_single() && !is_page() && get_post_type() != 'post' ) {
$post_type = get_post_type_object(get_post_type());
echo $before . $post_type->labels->singular_name . $after;
} elseif ( is_attachment() ) { // 附件
$parent = get_post($post->post_parent);
$cat = get_the_category($parent->ID); $cat = $cat[0];
echo '<a itemprop="breadcrumb" href="' . get_permalink($parent) . '">' . $parent->post_title . '</a> ' . $delimiter . ' ';
echo $before . get_the_title() . $after;
} elseif ( is_page() && !$post->post_parent ) { // 頁(yè)面
echo $before . get_the_title() . $after;
} elseif ( is_page() && $post->post_parent ) { // 父級(jí)頁(yè)面
$parent_id = $post->post_parent;
$breadcrumbs = array();
while ($parent_id) {
$page = get_page($parent_id);
$breadcrumbs[] = '<a itemprop="breadcrumb" href="' . get_permalink($page->ID) . '">' . get_the_title($page->ID) . '</a>';
$parent_id = $page->post_parent;
}
$breadcrumbs = array_reverse($breadcrumbs);
foreach ($breadcrumbs as $crumb) echo $crumb . ' ' . $delimiter . ' ';
echo $before . get_the_title() . $after;
} elseif ( is_search() ) { // 搜索結(jié)果
echo $before ;
printf( __( 'Search Results for: %s', 'cmp' ), get_search_query() );
echo $after;
} elseif ( is_tag() ) { //標(biāo)簽 存檔
echo $before ;
printf( __( 'Tag Archives: %s', 'cmp' ), single_tag_title( '', false ) );
echo $after;
} elseif ( is_author() ) { // 作者存檔
global $author;
$userdata = get_userdata($author);
echo $before ;
printf( __( 'Author Archives: %s', 'cmp' ), $userdata->display_name );
echo $after;
} elseif ( is_404() ) { // 404 頁(yè)面
echo $before;
_e( 'Not Found', 'cmp' );
echo $after;
}
if ( get_query_var('paged') ) { // 分頁(yè)
if ( is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author() )
echo sprintf( __( '( Page %s )', 'cmp' ), get_query_var('paged') );
}
echo '</div>';
}
}
調(diào)用代碼:
<?php if(function_exists('cmp_breadcrumbs')) cmp_breadcrumbs();?>