php - Automatically prepending '#' to slug in child page permalinks -

problem

i'd have child page url http://www.foo.com/fooparent/foochild automatically turns http://www.foo.com/fooparent/#foochild

could done htaccess rewrite rules or kind of wordpress hook?

use case

i have parent pages loading child pages content in template. it's utilizing onepage layout anchor links scrolling down page each section navigate. there cases permalinks of child pages exposed , break onepage functionality. child permalink should load it's parent page , add use slug #anchor in url.

i looping through categories, getting link, , if subcategory use regular expression replace last / #.

# code display category links foreach(wp_list_categories() $category) {     $name = $category->name;     $link = get_category_link($category->term_id);      if($category->parent) {         // parent isn't 0, lets change link have anchor         $link = preg_replace('~/([^/]+)/?$~', '#$1', $link);     }      // output $name/$link } 

the regex /([^/]+)/?$ matches /, followed non / characters in capture group (the anchor), followed optional trailing slash , end of string ($). can replace match pound , anchor saved in our first capture group (#$1).

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update:

as prefix, can't tell documentation whether or not get_the_category() gets current category category template..but let assume does. can this:

# code redirect away subcategory pages $category = get_the_category(); // not sure if works  // directly accessing child category, redirect if($category->parent) {     $link = get_category_link($category->term_id);     $link = preg_replace('~/([^/]+)/?$~', '#$1', $link);      header("http/1.1 301 moved permanently");      header("location: $link");     exit; } 

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links:

• wp_list_categories()
• category object's members
• get_category_link()
• get_the_category()