Read Template Hierarchy article in the codex, especially pay attention to Single Post Display part. As you can see you have only three options: single-{post_type}.php single.php index.php It means that you can’t create a template for posts related to blog category. So you shouldn’t use single-blog.php template, use single.php instead and add there something like … Read more
You cannot replace the main query with the output of $wpdb. The main query is a WP_Query object. $wpdb returns a simple array or object, but not a WP_Query object. Even if you could shove raw SQL into a query (something in the back of my head makes me think you can but I can’t … Read more
The following query retrieves the oldest post of a specified user/author: $user_id = 42; // or whatever it is $args = array( ‘posts_per_page’ => 1, ‘post_status’ => ‘publish’, ‘author’ => $user_id, ‘orderby’ => ‘date’, ‘order’ => ‘ASC’, ); $first_post = new WP_Query($args); if ($first_post->have_posts()) { $first_post->the_post(); // Now you can use `the_title();` etc. wp_reset_postdata(); } … Read more
The reason you get 0 back is because of the test at the end of the function: if ( ! empty( $query->posts ) && $query->is_singular ) return $query->post->ID; else return 0; The posts page doesn’t pass the is_singular test so 0 is returned. If you have a URL and want to know if it’s the … Read more
You can try the the_content filter, to append/prepend text to the post content. Here’s a simple example: add_filter( ‘the_content’, function( $content ) { if( is_single() && has_tag( ‘follow-me-on-twitter’ ) ) { $content .= ‘<div>Like my posts? Follow me on twitter!</div>’; } return $content; }, 99 ); where we append the extra text if the current … Read more
Try this add_action( ‘init’, ‘tag_synchro’, 10 ); It might be the case that, when you set priority to 0 , your callback does not get called.
This is only my best guess. I can’t see a definitive answer with the information provided. The primary key for wp_posts should be set to ID. The primary key is giving the error. Since ID is not defined in the query, it is likely that the AUTO_INCREMENT value has been set to 0, or is … Read more
Exist some WordPress function that retrieve the list of links (in my specific case only one) that are into a post? Check out the core wp_extract_urls() function: $urls = wp_extract_urls( $content ); that will extract urls from any given content. Example $content=”Two test sites: <a href=”http://foo.tld”>Foo.tld</a> and https://bar.tld”; $urls = wp_extract_urls( $content ); print_r( $urls … Read more
The reason you don’t see it if you dump object is because it’s not actual object property. WP_Post implements magical __get() method for ancestors and several more keys like that. When you access $post->ancestors() what you actually get is not some value from the object, but return of get_post_ancestors() function executed on it. So in … Read more
Answer by @Pieter Goosen : If you need to update the page before the main query fires and returns the page object, you will manually need to parse the URL (probably on init) and get the page ID from get_page_by_title() or get_page_by_path(). Otherwise, ‘wp’ would be earliest hook to get the page ID, for example: … Read more