functions

Using add_filter() in Widgets

<?php /** * Display the actual Widget * * @param Array $args * @param Array $instance */ public function widget($args, $instance){ … $wcss = apply_filters( ‘my-filter-name’, $wcss ); … } ?> To create your own filter hook just use the function “apply_filters” then as you mentioned add a function in your constructor i.e. function __constructor() … Read more

How to create thumbnails for PDF uploads?

If I’m not totally mistaken, the code you have given on your update won’t work, because the file/mime type pdf isn’t supported by the WP_image_editor class called by wp_get_image_editor(). Creating a thumbnail from a uploaded pdf file can be achieved though. Below code gives you a insight in a possibility how to do it, I … Read more

How to add classes to images based on their categories?

This should hopefully do the trick: /** * Append the image categories to the current image class. * * @see http://wordpress.stackexchange.com/a/156576/26350 */ add_filter( ‘get_image_tag_class’, function( $class, $id, $align, $size ) { foreach( (array) get_the_category( $id ) as $cat ) { $class .= ‘ category-‘ . $cat->slug; } return $class; } , 10, 4 ); Testing … Read more

Add admin bar link to edit author

You could try this modification of your code: function add_author_edit_link( $wp_admin_bar ) { if ( is_author() && current_user_can( ‘add_users’ ) ) { $args = array( ‘id’ => ‘author-edit’, ‘title’ => __( ‘Edit Author’ ), ‘href’ => admin_url( sprintf( ‘user-edit.php?user_id=%d’, get_queried_object_id() ) ) ); $wp_admin_bar->add_node($args); } } add_action( ‘admin_bar_menu’, ‘add_author_edit_link’, 99 ); where we use the … Read more

wp_set_object_terms and arrays

I doubt it would justify the effort of writing custom SQL queries for only 2500 posts. Within the wp_set_object_terms( $object_id, … ) function we have: $object_id = (int) $object_id; so it’s correct that it only takes a single post id as input. So you would need to loop over your $post_ids array but it might … Read more

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