The short answer is you can try but it just won’t be any kind of reliable. There was a similar question while back — get registered metaboxes by post type or post ID Overall it is somewhat possible to fetch metaboxes like that, but it was never designed to work like that. Also it’s common … Read more
Meta Box not being added in plugin
I guess you want to delete all meta values from all posts with this: delete_metadata(‘post’, null, $meta_key, null, true) See the documentation which says, that the last argument is ment to delete all entries from all objects: delete_metadata($meta_type, $object_id, $meta_key, $meta_value=””, $delete_all = false) $delete_all (boolean) (optional) Optional, default is false. If true, delete matching … Read more
Create new sidebars trough admin post/page metabox
Plugin dev: How to multiply instances of a plugin in the same metabox?
Metabox is not saving
Add meta box for Featured Image caption in wp-admin/post-new.php
You haven’t quite got a grip on the switch statement, read up here. $template = get_post_meta( get_the_ID(), ‘_my_theme_post_template’, true ); switch ( $template ) { case ‘template-2’: get_template_part( ‘inc/post-loops/template-1’ ); break; case ‘template-1’: get_template_part( ‘inc/post-loops/template-2’ ); break; default: // Neither values matched, do something else? break; }
add_action( ‘post_submitbox_misc_actions’, ‘show_current_filter’ ); add_action( ‘post_submitbox_start’, ‘show_current_filter’ ); function show_current_filter() { $post = get_post(); print ‘<pre>’ . $post->ID . ‘ : ‘ . current_filter() . ‘</pre>’; } https://codex.wordpress.org/Plugin_API/Action_Reference/post_submitbox_misc_actions https://developer.wordpress.org/reference/hooks/post_submitbox_start/
Refer to Creating a new PostBox in WordPress. As long as you name the fields the same in render as you do in save then you’re good. RENDER echo ‘<input type=”text” id=”boxpost_meta_field” name=”boxpost_meta_field”‘; SAVE $mydata = sanitize_text_field( $_POST[‘boxpost_meta_field’] ); // Update the meta field. update_post_meta( $post_id, ‘_boxpost_meta_field_value_key’, $mydata ); GET $value = get_post_meta( $post->ID, ‘_boxpost_meta_field_value_key’, … Read more