No, and in fact you should not include the wp-admin/includes/upgrade.php file in a plugin. There is no real valid use case for doing so. It doesn’t do anything for you or add any useful functions for a plugin. As for your question, you say “it doesn’t work” but you fail to define what that means. … Read more
Yes, there is no way to get screen size with PHP, because it runs on server, while the screen is something related to client (browser). However, in OP you say: for a desktop visitor I show 10 posts and for a mobile visitor I show 3 posts and even if you can’t get the screen … Read more
You’re close. Your first attempt is using get_the_tags incorrectly. The function accepts the post ID you want to get the tags from. In your example, there is no $tag global, so $tag->name is trying to fetch a property of a non-object. In your second attempt, a single post won’t have any tag-related query vars, that … Read more
To order by the authors nicename is not nativly supported by the WP_Query. If you order by author, as you have experienced, you order by the ID of the author. So, you would need to actually go into the SQL clauses and manage this by yourself. This is a quick and dirty hack to do … Read more
I notice that to link to each post, I am calling get_permalink() and this is creating an extra DB query for each post. Not true. If you check the link to the very old trac ticket #18822 in the post that you have linked to, this issue was raised by @kaiser in 2011. The question … Read more
add this in your arguments ‘query_id’ => ‘authors_with_posts’, $user_args = array( ‘role’ => ‘frontend_vendor’, ‘orderby’ => ‘display_name’, ‘query_id’ => ‘authors_with_posts’, ‘order’ => ‘ASC’, ‘number’ => $no, ‘offset’ => $offset );
pre_get_posts does not work as expected on true pages and static front pages. You should create a custom query using WP_Query to return the posts that you need. EDIT Thanks to @birgire in comments, here is an interesting approach using pre_get_posts with a static front page
After researching this quite a bit I managed to sort the Events Manager events by date in the Essential Grid plugin. If you started with the solution above, you can delete the added parameters field under source tab of Essential Grids, it’s not needed anymore. So here’s what I have in functions.php. Note: I have … Read more
In general, I agree with Howdy_McGee that one should avoid overwriting the main query unless absolutely necessary – more often than not, modifying the main query with something like a ‘pre_get_posts’ hook is a better solution to such scenarios. Manually overwriting the global $wp_query can cause all sorts of unintended behaviors if you are not … Read more
I suggest to use the Object Cache API or Transients API, whatever fits better your needs. A very quick example with object cache: // helper function function get_my_object() { $object = wp_cache_get( ‘my_object’ ); if ( false === $object ) { $args = array( …. ); $object = new WP_Query( $args ); wp_cache_set( ‘my_object’, $object … Read more