List parent and subpages even if on subpage in WordPress

[Siebird]

Hi All,

PHP noob here ...I want to list parent page and subpages even when on a subpage and dynamically highlight the list item of the current page by adding a class "current". Does that make sense? Any thoughts or ideas?

This currently just list subpages:

<?php
  			if($post->post_parent)
  			$children = wp_list_pages("title_li=&child_of=".$post->post_parent."&echo=0");
  			else
  			$children = wp_list_pages("title_li=&child_of=".$post->ID."&echo=0");
  			if ($children) { ?>
  			<ul class="submenu">
  			<?php echo $children; ?>
  			</ul>
  			<?php } ?>

[Hierophant]

Your current page should have the class "current_page_item" assigned to it automatically by wp_list_pages. You can use that to style it properly. See:
http://codex.wordpress.org/wp_list_p..._of_page_items

[Siebird]

Your current page should have the class "current_page_item" assigned to it automatically...

Wasn't even looking at the source code when testing. That solves that issue, but doesn't solve listing the parent item with the child items (subpages)???

[aaronjj]

A simple way to do it would be to add another call to wp_list_pages to your code.

$children = wp_list_pages("title_li=&include=".$post->post_parent."&echo=0");
$children .= wp_list_pages("title_li=&child_of=".$post->post_parent."&echo=0"); 

[Siebird]

A simple way to do it would be to add another call to wp_list_pages to your code.

$children = wp_list_pages("title_li=&include=".$post->post_parent."&echo=0");
$children .= wp_list_pages("title_li=&child_of=".$post->post_parent."&echo=0"); 

Thanks! Not sure where I would add these calls? Do I add another else statement? Bare with me as I'm just learning PHP

[aaronjj]

<?php
if($post->post_parent){
	$children = wp_list_pages("title_li=&include=".$post->post_parent."&echo=0"); 
	$children .= wp_list_pages("title_li=&child_of=".$post->post_parent."&echo=0");
} else {
	$children = wp_list_pages("title_li=&child_of=".$post->ID."&echo=0");
}
if ($children) { ?>
	<ul class="submenu">
		<?php echo $children; ?>
	</ul>
<?php } ?>

[Siebird]

Works Perfect! Thanks

If you don't mind, can explain to me whats happening so I can better understand, and learn. I appreciate all your help

[aaronjj]

<?php
 
/* if the current pages has a parent, i.e. we are on a subpage */
if($post->post_parent){
	$children = wp_list_pages("title_li=&include=".$post->post_parent."&echo=0"); // list the parent page
	$children .= wp_list_pages("title_li=&child_of=".$post->post_parent."&echo=0"); // append the list of children pages to the same $children variable
} 
 
/* else if the current page does not have a parent, i.e. this is a top level page */
else { 
	$children = wp_list_pages("title_li=&child_of=".$post->ID."&echo=0"); // form a list of the children of the current page
}
 
/* if we ended up with any pages from the queries above */
if ($children) { ?>
	<ul class="submenu">
		<?php echo $children; /*print list of pages*/ ?>
	</ul>
<?php } ?>

You may want to change the else statement to also include the top level page in the list (which would be the current page). In that case you would change $children to be just like the first if statement replacing the instances of $post->post_parent with $post->ID like this

    $children = wp_list_pages("title_li=&include=".$post->ID."&echo=0");
    $children .= wp_list_pages("title_li=&child_of=".$post->ID."&echo=0"); 

[Siebird]

I appreciate it! This is my first wordpress theme, slowly I'm learning.

[kiwiAMS]

just wanted to say thank you for this tipp, it helped me greatly too !

[dorudm]

Hi, I'm a php/wordpress noob also.
Could you please tell if I can test if a parent has a particular child, by name or id?
For example : test if the page "test" has a subpage "test2" or the same thing by id if the page with the id "31" has the page "87" as subpage.
I was thinking of checking the children list bellow but I didn't manage to do it.
I also know that a page can be tested by is_page('83') for example, I was wondering if there is something like this for what I want also.
Thanks

<?php
 
/* if the current pages has a parent, i.e. we are on a subpage */
if($post->post_parent){
	$children = wp_list_pages("title_li=&include=".$post->post_parent."&echo=0"); // list the parent page
	$children .= wp_list_pages("title_li=&child_of=".$post->post_parent."&echo=0"); // append the list of children pages to the same $children variable
} 
 
/* else if the current page does not have a parent, i.e. this is a top level page */
else { 
	$children = wp_list_pages("title_li=&child_of=".$post->ID."&echo=0"); // form a list of the children of the current page
}
 
/* if we ended up with any pages from the queries above */
if ($children) { ?>
	<ul class="submenu">
		<?php echo $children; /*print list of pages*/ ?>
	</ul>
<?php } ?>

You may want to change the else statement to also include the top level page in the list (which would be the current page). In that case you would change $children to be just like the first if statement replacing the instances of $post->post_parent with $post->ID like this

    $children = wp_list_pages("title_li=&include=".$post->ID."&echo=0");
    $children .= wp_list_pages("title_li=&child_of=".$post->ID."&echo=0"); 

[Dan Schulz]

Quick question, Aaron. Is it possible to modify that so it replaces the default "current page" class WordPress generates with something else, like "current-page" perhaps?

Or would I have to find the function that WordPress uses (which I recall changes with each version) and edit that instead?

[aaronjj]

Dan, it would probably make more sense to setup a filter on wp_list_pages to accomplish that. something like this in your functions.php file in your theme

add_filter('wp_list_pages', 'change_classes');
function change_classes($str){
 $return = str_replace('current_page_item', 'current-page', $str);
 return $return;
} 

I didn't test that, but it should get you close. Probably not worth the extra processing in most circumstances though.