add_action‘s second parameter is a callable, it can accept a string (like what you did in the example) or an array of class-instance and function name. For example, if you want to call a method get_age() from Person class, you can do this: $person = new Person(); add_action( ‘hook_name’, array($person , ‘get_age’) );
Anytime changes are saved in the Customizer, there is a customize_save_after hook. For theme updates, you can use the upgrader_process_complete hook – you pass it various arguments including ‘type’ => ‘theme’. I don’t think there are any WordPress-specific hooks for when files of a child theme are modified. This typically happens via FTP, rather than … Read more
in_category() should be used inside The Loop (unless if you pass a post ID as the second parameter like in_category( 1, 1 )) and only for the default/built-in category taxonomy. For custom taxonomies like the product_cat in your case, you should use has_term(); however, if you’re checking if the current request/page is a taxonomy archive … Read more
Take a look at Mike’s answer to a similar question more specifically the plugin he posted there can be used to create a list of all action hooks and filters that were called to generate that page in order of execution. Hope this helps
init is too early for conditional tags, use template_redirect instead. have a look at the action reference to see the order they’re executed.
Shot in the dark here, but… It is entirely possible the plugin with the do_action definition is hooked before the theme is processed. Find out where the do_action is defined, and find out when it is being hooked. You might need to hook to the function that the do_action definition is hooked too, and THEN … Read more
Create a static getter for your class instance: class DD_Awesome_Plugin { /** * Plugin main instance. * * @type object */ protected static $instance = NULL; /** * Access plugin instance. You can create further instances by calling * the constructor directly. * * @wp-hook wp_loaded * @return object T5_Spam_Block */ public static function get_instance() … Read more
Use e.g. the init hook instead. For instance;: if (isset($_GET[‘convert’])) add_action(‘init’, ‘yourfunction’); (Come up with a better check, though. ?convert could mean anything. And secure it by checking for user permissions, that it hasn’t already run, etc.)
So far as I am aware, there is no hook in the location you need, if I understand you. The closest I can think of is loop_start, which as you might expect runs when the loop begins. The problem with that hook is that you don’t know what content the theme may have between the … Read more
I just went through this whole process myself. There isn’t a hook or anything to make this easy, so instead we have to “hack” it into place in order for it to work. It’s not pretty, but it gets the job done. I’ve been using it for months now with 3 custom fields and it’s … Read more