Thanks Esmi,
How would I make it form a conditional, so that I can show different content?
<?php if ( in_category( 'fruit' ) || post_is_in_descendant_category( 11 ) ) { ?>
Fruit content
<?php } elseif ( in_category( 'vegetable' ) || post_is_in_descendant_category( 12 ) ) { ?>
Vegetable content
<?php }
?>
And put this in the functions.php ?
<?php
/**
* Tests if any of a post's assigned categories are descendants of target categories
*
* @param int|array $cats The target categories. Integer ID or array of integer IDs
* @param int|object $_post The post. Omit to test the current post in the Loop or main query
* @return bool True if at least 1 of the post's categories is a descendant of any of the target categories
* @see get_term_by() You can get a category by name or slug, then pass ID to this function
* @uses get_term_children() Passes $cats
* @uses in_category() Passes $_post (can be empty)
* @version 2.7
* @link http://codex.wordpress.org/Function_Reference/in_category#Testing_if_a_post_is_in_a_descendant_category
*/
function post_is_in_descendant_category( $cats, $_post = null )
{
foreach ( (array) $cats as $cat ) {
// get_term_children() accepts integer ID only
$descendants = get_term_children( (int) $cat, 'category');
if ( $descendants && in_category( $descendants, $_post ) )
return true;
}
return false;
}
?>
Unfortunately it doesn’t work in attachment.php – no idea why!
Ah – not considered it being used for an attachment. Judging from my tests (actually carried out in image.php), an attachment doesn’t have a category (post_category = 0). So I think what you need to do is to grab the cat_id of the post_parent – which you should be able to do via $post->post_parent.
Thanks Esmi – how would I change the conditional to take this into account?
Really appreciate your help, Ross
I’ve tried this and it does work – any advice? thanks, Ross
<?php
global $post;
if ( $post->post_parent == '3' ) { ?>
3 hautecouture
<?php } elseif( $post->post_parent == '8' ) { ?>
8 lingerie
<?php } ?>
Hi Esmi – any advice on using a conditional for $post->post_parent ?
thanks, Ross
How can I grab the cat_id of the post_parent – with $post->post_parent.?
thanks, Ross
