Per comments, just use pre_get_posts filter (no query_posts()) very much as you have it with a few adjustments, eg test for $query->is_category( ‘news’ ) so that it only runs on news queries, and set the default to “2014” rather than bailing on no $_GET, eg function wpse129223_custom_meta_query( $query ) { // If not on the … Read more
You want to use body_class filter. function prefix_add_body_class( $classes ) { global $post; // good to check if( ! is_single() || ‘post’ !== get_post_type() ) { return $classes; } $btag = get_post_meta( $post->ID, ‘tagbody’, true ); if ( empty( $btag ) ) { return $classes; } $classes[] = $btag; return $classes; } add_filter( ‘body_class’, ‘prefix_add_body_class’ … Read more
(I was going to add this as a comment as it’s not a full answer, but I can’t yet…) I think you will need to use an SQL query as the standard meta_queries / orderby won’t work. Have a look at Custom Table Column Sortable by Taxonomy Query and http://wpdreamer.com/2014/04/how-to-make-your-wordpress-admin-columns-sortable/#sorting-posts-option-b for a couple of examples.
Plugins that load the WordPress environment this way get rejected from the repository, as they are prone to failure in non-standard configurations. For something like this I would use the admin-post-$action to receive requests. The WordPress API will be available where you can check if users are authorized to perform specific actions.
I just resolved this. Apparently, when you do AJAX calls to post edit pages in WordPress, or administrator, things work different and you don’t get the ID of the post you are editing. I read a lot of similar questions like this, but none of the solutions worked for me, but they gave me hints. … Read more
The first one doesn’t work because $post doesn’t exist inside the context of your shortcode function, you would need to add global $post; before it. However… You should use get_the_ID() instead of accessing the $post global directly. The reason it doesn’t work in your second example is that it’s not a class method, it’s just … Read more
You overwrite the global $post which is where that function gets the post ID from to fetch your custom field. You need to add wp_reset_postdata() after you run other queries that use $post.
You are not checking the current date correctly. You need to use current_time() funciton to get current datetime according to WordPress configuration. Then, using PHP date() you can check what day of week current date is: // Get current date time of WordPress in Unix timestamp format $timestamp = current_time( ‘timestamp’ ); // Get day … Read more
You can use update_post_meta: update_post_meta( $post_id, ‘custom_count’, $count_value );
I would suggest you define a field names property on your class: class your_class { private $_fields = array( ‘firstname’, ‘lastname’, ‘sex’, ); public function prfx_meta_save ( $post_id ) { } } Now you can fully abstract your save handler: foreach ( $this->_fields as $field ) { if ( ! isset( $_POST[ $field ] ) … Read more