How to show feature image of ACF relationship field inside ACF repeater field

Hi,

I have an ACF repeater field containing a relationship field and an image field.

I am able to display the image using an image template object with the value:
[acf field='artworks_0_custom_image_url' post_id="[id]"]

----

I am able to display the post content of the first relationship field item using a HTML template object with the value:
[e2pdf-wp key="artworks_0_artwork" meta="true" path="0"]

and the filter:

function e2pdf_extension_render_artwork_values( $value, $element_id, $template_id, $item, $dataset )
{
if ($value && $template_id == '1') {

if ($element_id == '10') { //HTML object
$related_post = get_post($value, ARRAY_A);
if ($related_post && isset($related_post['post_content'])) {
$output = $related_post['post_content'];
return $output;
} else {
return '';
}
}

}
return $value;
}
add_filter('e2pdf_extension_render_shortcodes_value', 'e2pdf_extension_render_artwork_values', 10, 5);

----

I am having troubles showing the feature image of the relationship field item.

I have tried using an image template object with the value:
[e2pdf-wp key="artworks_0_artwork" meta="true" path="0"]

and the filter:

function e2pdf_extension_render_artwork_values( $value, $element_id, $template_id, $item, $dataset )
{
if ($value && $template_id == '1') {

if ($element_id == '8') { //image object
$related_post = get_post($value, ARRAY_A);
if ($related_post && get_the_post_thumbnail($related_post['ID']) ) {
$output = get_the_post_thumbnail_url($related_post['ID'], 'full');
return $output;
} else {
return '';
}
}

}
return $value;
}
add_filter('e2pdf_extension_render_shortcodes_value', 'e2pdf_extension_render_artwork_values', 10, 5);

The above does not work.

I have also tried using this value directly in the image object:
[e2pdf-wp key="artworks_0_artwork" meta="true" path="0" attachment_image_url="true" size="full"]

Can you advise how I can show the feature image of the relationship field that is inside the ACF repeater object?

Thank you!

Hi,

Can you please create 2 "textarea" inside E2Pdf Template and use separate shortcodes:

[acf field="artworks_0_artwork" post_id="[id]"]

[e2pdf-wp key="artworks_0_artwork" meta="true"]

Is any of these shortcodes output just the related Post ID?

---

We would really appreciate your feedback at WordPress.org!

This one: [acf field='artworks_0_artwork' post_id="[id]"]

generates the error:

Fatal error: Uncaught Error: Object of class WP_Post could not be converted to string in \wp-content\plugins\advanced-custom-fields-pro\includes\api\api-template.php on line 902

I assume because the returning value is not a String.

This one: [e2pdf-wp key="artworks_0_artwork" meta="true"]

displays in the textarea: a:1:{i:0;s:5:"26828";}

----

The above got me thinking - Something else I tried...

Using this:
[e2pdf-wp key="artworks_0_artwork" meta="true" path="0"]
as the value in an image object displays the correct relationship field ID as the image.

But if I use a filter to try and reference this ID value:

function e2pdf_extension_render_artwork_values( $value, $element_id, $template_id, $item, $dataset ) {

if ($value && $template_id == '1' && $element_id == '8') { //Artwork image

$related_post_id = $value;

write_log('related_post_id = '.$related_post_id);

if (get_the_post_thumbnail($related_post_id)) {
$image_url = get_the_post_thumbnail_url($related_post_id, 'full');
write_log($image_url);
return $image_url;
} else {
return '';
}
}
return $value;
}
add_filter('e2pdf_extension_render_shortcodes_value', 'e2pdf_extension_render_artwork_values', 10, 5);

My log file shows the $value as:

related_post_id = iVBORw0KGgoAAAANSUhEUgAABz0AAACzCAYAAAAT4wHC .... etc

I assume it is bringing in the image data as the $value.

----

Any other clues on how I can get access to the ID in the filter and get this image object to show the feature image?

Try please below shortcode inside "textarea", without any PHP filters:

[e2pdf-wp id="dynamic" key="get_the_post_thumbnail_url" size="thumbnail"][e2pdf-wp key="artworks_0_artwork" meta="true" path="0"][/e2pdf-wp]

It must output the URL to Post Thumbnail. If it will work, just move this shortcode to the "Image" object and remove any PHP filters added to the "Image" object.

---

We would really appreciate your feedback at WordPress.org!

If it will work, you can also replace the shortcode for the Post Content and avoid using PHP filters:

[e2pdf-wp id="dynamic" key="post_content"][e2pdf-wp key="artworks_0_artwork" meta="true" path="0"][/e2pdf-wp]

P.S. Keep in mind please that if in the same "html" / "field", where such shortcode will be placed, will have any other [e2pdf-wp] shortcodes, it must be closed as [e2pdf-wp key="post_content"][/e2pdf-wp].

---

We would really appreciate your feedback at WordPress.org!

That worked!

BUT can you confirm if using dynamic shortcodes like this prevents the filters from working?

Since now my post_content filter no longer works. The reason I am using a filter on the post_content is that I concatenate extra ACF group field values, and number formatting:

if ($element_id == '10') { //Artwork text description

//Show Artwork field post title field & price (if any)

$related_post = get_post($value, ARRAY_A);
if ($related_post) {

$image_desc = $related_post['post_content'];

$price_values = get_field('pricing_details', $related_post['ID']);
$retail_price = number_format($price_values['retail_price']); //add thousands comma separator

$output = ($retail_price) ? $image_desc . ', $' . $retail_price : $image_desc;
return $output;

} else {
return '';
}

}

Does this mean the above can no longer work due to the dynamic data shortcodes?

You can, however, it must be used another filter, for shortcode directly: https://codeshare.io/8pdnXj

and your content shortcode must be modified to (added pricing_details="true"):

[e2pdf-wp id="dynamic" key="post_content" pricing_details="true"][e2pdf-wp key="artworks_0_artwork" meta="true" path="0"][/e2pdf-wp]

---

We would really appreciate your feedback at WordPress.org!

I can confirm that everything is working perfect! I learnt a lot of advanced E2PDF / advanced ACF field integrations from your code responses above.

I hope this helps others too. I learnt E2PDF by reading through other people's questions, hence this post should hopefully help others also!