This meta box is using the function wp_dropdown_users() to list all users. It has only one filter to change the output: wp_dropdown_users. But this filter offers just the complete markup and users. It’s neither easy nor fast to parse this via regex for user names, check their roles and then give back an new HTML. … Read more
Looking at the Action Reference in the Codex, the first action listed after the wp action that sets up the WP object is template_redirect, which is indeed fired after all queried data is available, and before a template is selected. You can use the WordPress conditionals to determine if your intended template file will be … Read more
It sounds like you are looking for do_action() In your method that you wrote add do_action and it will trigger your new custom action. Then you can use add_action() in the same way you use the build in actions. https://developer.wordpress.org/reference/functions/do_action/ Example of your method in the class… public function some_method() { $foo = ‘puppy’; $bar=”bunny”; … Read more
Try this. I cleaned up your arg array and placed everything in a function. Also, why are you using the getInstance method when your efpd_admin_notice is public? See the code below for accessing this method properly. function plugin_update(){ $plugin_update = Efpdd::efpd_admin_notice(array( ‘type’ => ‘update’, ‘message’ => ‘The plugin has just been updated.’, ‘button’ => ‘Click … Read more
+1 to both of the other answers, for explaining the primary differences between actions and filters. However, to answer your specific question, about which to use for modifying a query: Injecting your custom query into the template does, as you guessed, require hooking into an existing action. (Whether or not wp_footer is the correct/ideal action … Read more
If you don’t care about the actual action you can use login_init action like this: add_action( ‘login_init’, ‘wpse8170_login_init’ ); function wpse8170_login_init() { // do your stuff here } But if you want to handle only special actions, then you need to hook into login_form_{action} action, like this: add_action( ‘login_form_login’, ‘wpse8170_login_form_login’ ); function wpse8170_login_form_login() { // … Read more
Know which file call a filter or an action is not possible running code, you have to search and read the source code or use some documentation. There are different plugins that help you to debug the hook being fired in a page, search codex and/or Google for them. However, to have a quick idea, … Read more
I think I figured this one out. I had misread this answer and hooked the function I wrote to wp_clear_auth_cookie (actually a function itself!) instead of clear_auth_cookie (the real hook), so that wasn’t working. But now using the real hook, I think it might be. Correct me if I’m wrong. Below is the function with … Read more
The param used in do_action isn’t a function is just a tag that represents the action called, the proper way to use an action is attaching functions with add_action. You can learn more from https://developer.wordpress.org/reference/functions/do_action/
Pull the add_action() outside of the function, and put the conditional inside the callback. Also, if you’re printing a script directly, use wp_print_scripts instead of wp_head. You also have a syntax error. function testingone(){ if( get_option( ‘MyOptionName’ ) ) { ?> <script>var Script = GoesHere; </script> <?php } } add_action( ‘wp_print_scripts’,’testingone’ );