You can create a filter using the “wp_get_attachment_image_attributes” hook. Place this in your functions.php file. function filter_image_title($attr, $attachment = null){ //Find your $photographer with $attachment->ID $attr[‘title’] .= ‘ (‘ . __(‘Photographed by’, ‘foobar’) . ‘ ‘ . $photographer . ‘)’; return $attr; } add_filter(‘wp_get_attachment_image_attributes’, ‘filter_image_title’, 10, 2);
I’m using this code below, it’s quite a bit, but it basically loops through post thumbnail, attached image, image in content and then to an image per category (which is a fixed set on my site, hence the naming scheme of the images in get_post_category_image. The main usage is through the last function, simply do … Read more
Perhaps use set_post_thumbnail()? (Codex ref.) EDIT To get the attachment ID using the Post ID: // Associative array of attachments, as $attachment_id => $attachment $attachments = get_children( array(‘post_parent’ => $post->ID, ‘post_status’ => ‘inherit’, ‘post_type’ => ‘attachment’, ‘post_mime_type’ => ‘image’, ‘order’ => ‘ASC’, ‘orderby’ => ‘menu_order ID’) ); $attachment = $attachments[0]; // ID of your single, … Read more
Well, I have finally figured it out. Using Mike’s example here, I just need to put this code wp.media.model.settings.post.id = 0 at this place : event.preventDefault(); wp.media.model.settings.post.id = 0; // If the media frame already exists, reopen it. if ( file_frame ) { file_frame.open(); return; } This will cause the image to be uploaded as … Read more
Roughly this: $parent = get_post_field( ‘post_parent’, $id); $link = get_permalink($parent);
in_category relies on a global post – it should only be used within the loop. Instead, use the arguments that are passed to your callback to query the categories assigned to the post being edited and check if one of them is video: $cats = get_the_category( $post[‘ID’] ); if ( in_array( ‘video’, wp_list_pluck( $cats, ‘slug’ … Read more
Unfortunately the logic of the attachment details isn’t made to be used standalone – it requires the grid that opens it. You can however use the get_media_item( attachment_id ) method to receive the HTML of the form for modifying images: https://developer.wordpress.org/reference/functions/get_media_item/
You could do this via PHP instead of SQL, just get the existing metadata and change what you need to, it will handling the serializing for you: $newwidth=”250″; // or whatever it is $attachments = get_posts(array(‘post_type’=>’attachment’); foreach ($attachments as $attachment) { $id = $attachment->ID; $metadata = wp_get_attachment_metadata($id); $metadata[‘width’] = $newwidth; wp_update_attachment_metadata($id,$metadata); } But really, you … Read more
Here is an example that adds a custom media field named Buy Now. This example saves the value of the custom field on the media overlay screen via ajax, as well as the media edit screen (non ajax). Edit: Added nonce check and sanitization. /** * Add custom field to media. */ add_filter( ‘attachment_fields_to_edit’, ‘wpse256463_attachment_fields’, … Read more
You have not created the attachment as link to the post, you will need to do that first. Then you can use in the content. Alternative it is possibel to upload to other path, but better is a link in the post, post-ID to attachment-ID. Easiest way to do that is with wp_insert_attachment(). This function … Read more