I am not an expert, but you have a couple of issues here Firstly, is_archive() should be an object of $query. You should also just target the front end with your function. Remember, pre_get_posts alters all instances of WP_Query, front end and backend. So this line if(is_archive() && $query->is_main_query()) : should look something like this … Read more
The concept of same meta field values being relative to each other isn’t native to WordPress. On top of my head you could create second meta field, which would express that relativeness as a number. So president is 1, vice president 2 and so on. This would be a pain to adjust if the hierarchy … Read more
I believe your problem is that you are not casting the variables over into integers. You should give this a try: $query->set(‘date_query’, array( array( ‘year’ => (int)$dies[‘year’], ‘month’ => (int)$dies[‘mon’], ‘day’ => (int)$dies[‘mday’], ), )); or if you would like, before you even set up the arguments for the query, you could do something along … Read more
I’m not sure how your current “hidden” checkbox code is working (there’s an undefined $archive variable, in_category might not fire correctly in the context, and I doubt your post type is actually your_post_type). Just to make sure we get everything working, here is a complete solution for adding a checkbox to the edit post screen, … Read more
post_parent should be the ID of the post parent, not the slug. Apart from that, your code should work. If not, look for any posts_* filters or pre_get_posts actions that might influence your custom query EDIT Something else I have missed, $args is already an array, so you do not need to add it another … Read more
You’re doing something like this tutorial on categorizing wordpress users, correct? I think you should do your filtering in your theme files, not on a hook. Just add an if statement to your template file (probably author.php) that tests if your custom fields aren’t empty strings, and then do whatever (404, redirect elsewhere, throw a … Read more
Per the wordpress codex pre_get_posts() does not work everywhere. is_font_page() will not work but is_home() will. So your condition is_front_page() && is_home() will fail every time. However ‘is_home()’ alone should work. It might be helpful to others to know what exactly you are trying to do. Usually pre_get_posts is used to alter a query but … Read more
The way you are trying to do it is probably the wrong way. WP_Query does not have any build in feature to subtract the values from two custom fields and then returning (or ordering) posts according to the value of the subtraction from the two fields. You can probably filter the generated SQL via the … Read more
I think the easiest way to get the newest modified posts on top of the loop is via post injection using the the_posts filter add_filter( ‘the_posts’, function ( $posts, \WP_Query $q ) { // Only target the main query on the home page if ( $q->is_main_query() && $q->is_home() && !$q->is_paged() // Only target page one … Read more
Adding pre_get_posts is too late if subscribed in a page template and your template is empty so that’s the reason nothing it showing. Move your pre_get_posts out to your functions.php so it has a chance to run. Also consider using template_include and specifying using book template another way that you can check for in that … Read more