attachments - Read For Learn

How to get an attachment id from a filename

I worked this out eventually by tracing through the code for get_attached_file() to see where it was getting the filename from, and reverse engineered the following: function get_attachment_id_by_filename($filename) { global $wpdb; $sql = $wpdb->prepare(“SELECT * FROM $wpdb->posts WHERE post_type=”attachment” and guid like %s order by post_date desc”, “%$filename”); $attachments = $wpdb->get_results($sql, OBJECT); return $attachments[0]->ID ?? … Read more

Set term on an attachment using wp_set_object_terms and want to display the full term text but it’s showing a slug instead

When a visitor fills out the email address field with “[email protected]”, what is displayed on the Attachment details screen (as in siteurl.com/wp-admin/upload.php?item=xx ) for that email field is “nameemail-com”. Yes, and that is the default behavior, i.e. WordPress displays the term slug instead of name (or the actual email address in your case). But there’s … Read more

How to get comment images stored as serialized comment meta

What you get is fine, it’s the image id, now you just need to loop them and output the structure that you want, for example. if (!empty($images = get_comment_meta( $comment->comment_ID , ‘reviews-images’, true ))) { foreach ($images as $image_id) { $image_src = wp_get_attachment_image_src($image_id, ‘full’); // Now you have the image src, $image_src, you can do … Read more

How does WordPress decides how many sizes of an image to create?

Well it really depends on how many image sizes are defined through themes, plugins, settings and the WordPress itself. Some of which you can see in the media section in WordPress settings in admin panel. One thing you can do is to install a plugin like [AJAX Thumbnail Rebuild] and go to it’s page in … Read more

How to query details of images in gallery that is attached to a post

Query for image attachments would be something like this (taken from Get The Image plugin/extension) with get_children(): $attachments = get_children( array( ‘post_parent’ => $args[‘post_id’], ‘post_status’ => ‘inherit’, ‘post_type’ => ‘attachment’, ‘post_mime_type’ => ‘image’, ‘order’ => ‘ASC’, ‘orderby’ => ‘menu_order ID’ ) ); Then you can loop through array and retrieve URLs with wp_get_attachment_image_src() which will … Read more

attachment page template? only show attachments for current post?

The attachment.php is a specific template in the WordPress template hierarchy. WordPress uses it for a specific purpose, and the default Loop just won’t do what you’re claiming it’s doing. (The behavior you’re describing would be analogous to the single.php template file looping through all Posts.) I’m guessing your attachment.php template file has a custom … Read more

Links to my uploads went crazy

In the Add Media window, click the “File URL” button, not “Post URL” before inserting it into the post.

GUID field in wp_posts – relevance for attachments?

If you want to offer an ATOM feed for your attachments you should pass a GUID to wp_insert_attachment() or add a filter for ‘get_the_guid’ that handles empty values. In most (all?) other cases I wouldn’t care about it.

How to: Retrieve an attachment image from post and output it

I would use wp_get_attachment_image() (Codex ref), which returns a fully-formed HTML IMG tag: <?php wp_get_attachment_image( $attachment_id, $size, $icon ); ?> I assume you already know how to get the attachment image ID? The default image size is thumbnail, but you can pass any standard image size (e.g. full, large, medium), or any custom image size … Read more

How can I display a link to a post’s (Word doc or pdf) attachment?

Try this: <?php if ( $attachments = get_children( array( ‘post_type’ => ‘attachment’, ‘post_mime_type’ => array(‘application/doc’,’application/pdf’), ‘numberposts’ => 1, ‘post_status’ => null, ‘post_parent’ => $post->ID ))); foreach ($attachments as $attachment) { echo ‘<a href=”‘ . wp_get_attachment_url( $attachment->ID ) . ‘”>Download Spec Sheet</a>’; echo ‘</div>’; } ?>

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