Hello,
I have a custom field in my categories for an big image.
In my category.php, I display this big image with this code:
<?php $term = get_queried_object(); ?>
<?php if(get_field('big_image', $term)): ?>
<?php $MyImage = wp_get_attachment_image_src(get_field('big_image', $term), 'Size--xl'); ?>
<style type="text/css">
.my-image {background-image: url(<?php echo $MyImage[0]; ?>);}
</style>
<?php endif; ?>
What about if I want to display this big image in all the articles / single templates which belong to that category ?
This code dœsn’t work anymore. I guess there’s something to say I want its parent category big image ?
Thanks in advance for your help ! 🙂
I’m not sure what you mean, your title says “child single page” which leads me to believe you want to do this on a single post page… but your then you say that you want to get the image from the parent category.
If you are on a single post, the first thing you need to do is get the terms for the post. https://developer.wordpress.org/reference/functions/get_the_terms/
Once you have the terms and you want to get the top level term
$top_term = $term;
if ($term->parent) {
// term has a parent
$ancestors = get_ancestors($term_id, 'your-taxonomy-name-here', 'taxonomy');
$top_term_id = array_pop($ancestors);
$top_term = get_term($top_term_id, 'your-taxonomy-name-here');
}
if(get_field('big_image', $top_term)) {
/// your code here
}
Hello John,
Thank you for your help.
Indeed, I’m talking about a single post page.
Do I need to specify that it’s a category from a custom post type ?
So it’s a taxonomy called “destinations”.
So I adapt your code like this in my template single-destinations.php, no ? :
<?php $top_term = $term;
if ($term->parent) {
// term has a parent
$ancestors = get_ancestors($term_id, 'destinations', 'taxonomy');
$top_term_id = array_pop($ancestors);
$top_term = get_term($top_term_id, 'destinations');
}
if(get_field('big_image', $top_term)) { ?>
<p>Hello !</p>
<?php } ?>
Nothing happens… 🙁 Is there something wrong ?
With a single post page then you need to get the terms associated with the post, get_queried_object() will not help you.
// WP loop
while (have_posts()) {
the_post();
$term = false;
$terms = get_the_terms($post->ID, 'detinations');
// $terms is an array of term object
// use the first term found
if ($terms) {
$term = $terms[0];
if ($term->parent) {
// term is not at the top level
$ancestors = get_ancestors($term_id, 'destinations', 'taxonomy');
$top_term_id = array_pop($ancestors);
$term = get_term($top_term_id, 'destinations');
}
}
// $term now holds the top level term of a hierarchical taxonomy
// based on the first term found for this post
// or false if no term is selected for this post
if ($term) {
// output fields from the term
the_field('big_image', $term);
}
} // end while have_posts
Thank you John,
You code gives me blank page (I saw and correct the forgotten “s” in the first “destinations” term).
I don’t know where is the problem.
The big_image is defined in the “swimming” category from the “destinations” custom post type/taxonomy.
Maybe I was not clear enough on the point ?
Sorry I’m really not good at php … 🙁
I can’t promise that code I post here is without typos as I’m typing it directly in this editor and I don’t generally test it on a site first. If you’re getting a blank page then you need to turn on debugging in WP to see what the errors are. https://wordpress.org/support/article/debugging-in-wordpress/
Ok, I understand.
It says :
Uncaught Error: Cannot use object of type WP_Error as array in /Users/Path/single-destinations.php:15
Line 15 is :
$term = $terms[0];
Does it help ?
This is returning an error
$terms = get_the_terms($post->ID, 'detinations');
which generally means that the taxonomy does not exist
