在 Wordpress 中从博客 post 的永久链接 URL 中删除子类别时出现问题

Question

我正在使用此解决方案从我的博客 post 上的 url 中删除子类别： Remove sub category slug from permalink URL of blog post and custom post type in WordPress

add_filter('post_link','custom_post_type_link',10,3); 

function custom_post_type_link($permalink, $post, $leavename) {
if (!gettype($post) == 'post') {
return $permalink;
}
switch ($post->post_type) {
case 'post':
    //$permalink = get_home_url() . '/' . $post->post_name . '/';

    $cats = get_the_category($post->ID);
    $subcats = array();
    foreach( $cats as $cat ) {
        $cat = get_category($cat->term_id);
        if($cat->parent) { $subcats[] = sanitize_title($cat->name); }
    }
    if($subcats) {
        foreach($subcats as $subcat) {
            $subcat = $subcat.'/';
            $permalink = str_replace($subcat, "", $permalink);
        }
    }


    break;
}

return $permalink;}

它工作正常，但代码仍有一点问题。

如果我有这样的URL：

www.myblog.com/parentcategory/nameofchildcategory/slugpost

我会得到这个：

www.myblog.com/parentcategory/slugpost

这正是我想要的。

但是如果我有这样的URL：

www.myblog.com/parentcategory/nameofchildcategory/slugpost-with-nameofchildcategory

我会得到这个：

www.myblog.com/parentcategory/slugpost-with- (mssing the end of the slug)

...这篇文章的每个 link 都有一个 404 页面。

所以问题是，当子类别文本出现在 slug 的 post 中时，代码也会删除 URL 的这一部分。

有人知道如何解决这个问题吗？

提前致谢！

Answer 1

尝试分隔 slug 的两端，例如：

        foreach ($subcats as $subcat) {
            $permalink = str_replace('/'.$subcat.'/', '/', $permalink);
        }

Answer 2

我找到了这个解决方案，添加了两个函数。我不确定代码是否最佳，但它运行良好。

add_filter('post_link','custom_post_type_link',10,3); 

//function to see if URL ends with...
function endsWith($string, $endString) { 
$len = strlen($endString); 
if ($len == 0) { 
    return true; 
} 
return (substr($string, -$len) === $endString); 
} 

//function to replace only first match
function str_replace_first($from, $to, $content)
{
$from = '/'.preg_quote($from, '/').'/';

return preg_replace($from, $to, $content, 1);
}

function custom_post_type_link($permalink, $post, $leavename) {
if (!gettype($post) == 'post') {
return $permalink;
}


switch ($post->post_type) {
case 'post':
    //$permalink = get_home_url() . '/' . $post->post_name . '/';


    $cats = get_the_category($post->ID);
    $subcats = array();
    foreach( $cats as $cat ) {
        $cat = get_category($cat->term_id);
        if($cat->parent) { $subcats[] = sanitize_title($cat->name); }
    }

    if($subcats) {
        foreach($subcats as $subcat) {
            $subcat = $subcat.'/';

            //If URL ends with category name
            if(endsWith($permalink,$subcat)){
              //And if the category name appears more than once
              if(substr_count($permalink,$subcat)>1){
                // Remove only first match
                $permalink = str_replace_first($subcat, "", $permalink);
              }else{
                //do nothing
              }
            }
            // If URL does NOT end with category name
            else{
              $permalink = str_replace($subcat, "", $permalink);
            }
        }
    }
    break;
}

return $permalink;}

在 Wordpress 中从博客 post 的永久链接 URL 中删除子类别时出现问题

Problem removing sub category from permalink URL of blog post in Wordpress

url

wordpress

blogs

slug

categories