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OK I'm doing a a menu (sidebar menu) that will display this all child pages of parent page (currently open)
Parent
|-Child 1
|-Child 2
|Child 3

but in same time when someone is in bolded page (child) will see the same thing
Parent
|-Child 1
_
_|-Child 1
_ _|-Child 2
_ _|- Child 3
|-Child 2
|-Child 3

currently I use next code which do first job well but not the second one with child of child I tried several things but nothing worked

 <?php if ( is_page() ) { 
if($post->post_parent)
$children = wp_list_pages('title_li=&child_of='.$post->post_parent.'&echo=0&sort_column=post_date&sort_order=DESC'); else
$children = wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0&sort_column=post_date&sort_order=DESC');
if ($children) { ?> .......

Thanks in advance


Edit

As Simon answered it worked but not for all cases and I edited so now final code is:

<?php if ( is_page() ) {
    $stats = count($post->ancestors);
if($post->post_parent){ 
  if($stats == 2){
    $children = wp_list_pages('title_li=&child_of='.get_post( $post->post_parent )->post_parent.'&echo=0&sort_column=post_date&sort_order=DESC&depth=1'); 
  }else{
    $children = wp_list_pages('title_li=&child_of='.$post->post_parent.'&echo=0&sort_column=post_date&sort_order=DESC&depth=1');
  }}
else{
  $children = wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0&sort_column=post_date&sort_order=DESC&depth=1');
}
if ($children) { ?> ....

That's in case if somebody else need this stuff, Cheers and thanks for fast help

share|improve this question
    
I'm not sure what you need to display ? Siblings to the viewed page or siblings of the parent page ? –  Simon Jan 30 '13 at 13:42
    
I want to see first structure even when someone is on bold child page (in page of child of overall parent –  Aleksandar Savic Jan 30 '13 at 19:21

2 Answers 2

up vote 0 down vote accepted

Could you try this ? The idea is if there is a parent, we should list pages for the parent of this parent.

<?php if ( is_page() ) { 

    if($post->post_parent) {
        $children = wp_list_pages('title_li=&child_of='. get_post( $post->post_parent )->post_parent .'&echo=0&sort_column=post_date&sort_order=DESC'); 
    } else {
        $children = wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0&sort_column=post_date&sort_order=DESC');
    }
}

Other solution would be to try to use depth option which according to codex could list only top-level pages :

<?php if ( is_page() ) { 

    if( $post->post_parent ) {
        $children = wp_list_pages('title_li=&depth=1&echo=0&sort_column=post_date&sort_order=DESC'); 
    } else {
        $children = wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0&sort_column=post_date&sort_order=DESC');
    }
}

Sorry, I don't have time to try the code, but let us know if this is helps (or not).

share|improve this answer

Hope this will get you going!

          <?php
          $children = wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0&depth=1');
          if ($children) { ?>
          <?php echo $children; ?> 
          <?php } ?>

That will get you the child of the current page/template that is set in wp-admin.

share|improve this answer
    
yes I know that but it's displaying child what I want to find how to get a children from grand parent, so what I logically need to find out is get parent of current page (which I know to do) and from that parent page I want to find his parent (which I don't know how) and if there is a parent (last one) then display his children (sorry for bad english) –  Aleksandar Savic Jan 30 '13 at 19:28

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