Hello! I have set up an ACF file field. There I am adding PDFs. WordPress is now generated images from the first page of the pdfs. How can I alter this query to not print the icon, but the generated image of the pdf file. I want to use one of the smaller generated image sizes, not the full sized one.
Thanks very much!
<?php
$file = get_field('dokumente_datei');
if( $file ):
// Extract variables.
$url = $file['url'];
$title = $file['title'];
$caption = $file['caption'];
$icon = $file['icon'];
// Display image thumbnail when possible.
if( $file['type'] == 'image' ) {
$icon = $file['sizes']['medium'];
}
// Begin caption wrap.
if( $caption ): ?>
<div class="wp-caption">
<?php endif; ?>
<a href="<?php echo esc_attr($url); ?>" title="<?php echo esc_attr($title); ?>">
<img src="<?php echo esc_attr($icon); ?>" />
</a>
<?php
// End caption wrap.
if( $caption ): ?>
<p class="wp-caption-text"><?php echo esc_html($caption); ?></p>
</div>
<?php endif; ?>
<?php endif; ?>
// Get the ID of the attachment rather than the url, setting 3rd parameter
// to false will return unformatted value, intval is just in case a string
// is returned
$file_id = intval(get_field('dokumente_datei', false false);
// get the thumbnail
$image = get_attachment_image_src($file_id, 'thumbnail');
Thanks very much for your help!!!
I somehow get an 500 error, when I try to run your script above.
Think I am missing something here.
Syntax error on getting the field ID, missing closing )
When coding you should always enable debug display so that you get a useful error report rather than a WOD https://codex.wordpress.org/WP_DEBUG
$file_id = intval(get_field('dokumente_datei', false false));
Thanks again for your help. I am pretty new with all this.
I have now tried around several attempts, but I still get an error:
Parse error: syntax error, unexpected ‘false’ (T_STRING), expecting ‘)’ in (…)/wp-content/plugins/oxygen/component-framework/components/classes/code-block.class.php(115) : eval()’d code on line 2
<?php if( get_field('dokumente_datei') ):
$file_id = intval(get_field('dokumente_datei', false false));
$image = get_attachment_image_src($file_id, 'thumbnail');
?>
<img src="<?php echo esc_attr($image); ?>" />
<?php endif; ?>
Your help is highly appreciated!
I have got this somehow to work:
<?php
$text = get_field('dokumente_datei');
$stripped_text = str_replace(".pdf","-pdf.jpg","$text");
?>
<img src=<?php echo $stripped_text; ?>" width="100%">
But it returns the full-size image and I need a smaller one for the post loop. As the smaller ones are named differently (pixel size added to the image names), it does not work either as I try to get it to work….
I have finally found a working solution:
<?php
$file = get_field('dokumente_datei');
$url = $file['url'];
$image_id = $file['id'];
$image_url = wp_get_attachment_image($image_id,'medium');
if( $file ):
?>
<a href="<?php echo $file['url']; ?>">
<?php echo ($image_url); ?></a>
<?php endif; ?>
