added_post_meta seems like a good time to hook into a new image. Not only is the default meta already set but the function gives you the $post_id along with $meta_value which holds the attachment metadata. From there you can get all the fields and set the ones you want. add_action(‘added_post_meta’, ‘wpse_20151219_after_post_meta’, 10, 4); function wpse_20151219_after_post_meta($meta_id, … Read more
Thanks to Mike Jolley (Woocommerce plugin author) for the solution using: wp_get_attachment_image_src $prod_categories = get_terms( ‘product_cat’, array( ‘orderby’ => ‘name’, ‘order’ => ‘ASC’, ‘hide_empty’ => true )); foreach( $prod_categories as $prod_cat ) : $cat_thumb_id = get_woocommerce_term_meta( $prod_cat->term_id, ‘thumbnail_id’, true ); $shop_catalog_img = wp_get_attachment_image_src( $cat_thumb_id, ‘shop_catalog’ ); $term_link = get_term_link( $prod_cat, ‘product_cat’ );?> <a href=”https://wordpress.stackexchange.com/questions/200170/<?php echo … Read more
If I had to guess: because images are Attachments, and Attachments are a Post-Type. Thus, in order to edit an image, which is an attachment, which is a post, requires the edit_post capability. EDIT Don’t you have your capability mapping array keys/values reversed? e.g. you have ‘edit_posts’ => ‘edit_listings’. Shouldn’t it instead be ‘edit_listings’ => … Read more
i guess you are looking for this add_attachment and delete_attachment example: add_action(‘add_attachment’, ‘attachment_manipulation’); function attachment_manipulation($id) { if(wp_attachment_is_image($id)){ //do your own tasks } }
Thumbnails in WordPress can be generated by using wp_generate_attachment_metadata(), this function fires a filter after generating all the thumbnails wp_generate_attachment_metadata and the filter provides $metadata and $attachment_id to the hooked functions. You can hook your custom function to this filter. $metadata : Attachment metadata. What you need is $metadata[‘sizes’][‘<size-name>’], the <size-name> is the name of … Read more
Using birgire’s suggestions, I came up with the following solution that is working well with both the old pre-WP 4.x data and the newer posts that have been added under 5.0. // if there is a gallery block do this if (has_block(‘gallery’, $post->post_content)) { $post_blocks = parse_blocks($post->post_content); $ids = $post_blocks[0][attrs][ids]; } // if there is … Read more
1) A workaround by extending the WP_Image_Editor_GD class The problem is how to access the image sizes before we change the quality of intermediate jpeg images. Note that the image_resize() function is deprecated. We can use the jpeg_quality filter from the public get_quality method of the abstract WP_Image_Editor class: $quality = apply_filters( ‘jpeg_quality’, $quality, ‘image_resize’ … Read more
I found a plugin that does this for me: Additional image sizes (zui) When you delete an image size that size will not be created for all NEW images you upload. However, images created for deleted sizes still exist on the server as well as the image attachment metadata for those sizes. This feature will … Read more
I have actually managed to resolve my own problem. For anyone else that might ever read this the problem which caused this was that my functions.php file had a closing ?> at the very end. For whatever reason this is what cause the issue and by removing this last line it was working again.
combining the two answer on this page, I found this worked. $args = new WP_Query(array( ‘post_type’ => ‘post’, ‘posts_per_page’ => -1 )); $loop = new WP_Query($args); while($loop->have_posts()) { the_post(); $args2 = array( ‘order’ => ‘ASC’, ‘post_type’ => ‘attachment’, ‘post_parent’ => $post->ID, ‘post_mime_type’ => ‘image’); $attachments = get_posts($args2); if($attachments) { foreach ($attachments as $img_post) { if( … Read more