Can a plugin be used to contain all custom functions to extend other plugins
If your plugin customise functionaity of other plugins through hooks (actions and filters) the answer is Yes.
plugin-development
An echo line in a transition_post_status action leads to “cannot modify header information – headers already sent by”
The error message you are seeing is normal for that operation. By the time the transition_post_status hook fires, the HTTP page headers is already sent. By simply echoing an error message inside a hook like transition_post_status which was never intended to echo any output to the browser, as you did, you are actually trying to … Read more
how to use hook deleted_user into custom function to delete user from custom table
Using the delete_user action you can pass in the user_id and use that as a basis to delete the user from your addtiional table. This is, of course, assuming you use the user_id to make a relation between the two table. If not you can use get_userdata() passing in the user_id to get more user … Read more
Retrieve contents/page names of various pages for use in a plugin
You can use get_pages(); or get_posts(); or WP_Query to get a list of pages. They differ somewhat in details, so read up on that. But generally all of them should suffice, for you to achieve your goal. Just choose the best fitting one for your purpose. For getting pages by name or better title you … Read more
Modify users.php page to create page/post on button clicked
Use wp-admin/admin.php with an action parameter: <a href=”https://wordpress.stackexchange.com/questions/184153/<?php echo esc_url( admin_url(“admin.php?action=wpse_184153_create_page&user_id=$user_id” ) ) ?>”>Create Page</a> And then hook onto the event: function wpse_184153_create_page() { $redirect = admin_url( ‘users.php’ ); if ( ! empty( $_GET[‘user_id’] ) && $user = get_userdata( ( int ) $_GET[‘user_id’] ) ) { // Create your page // Add any URL parameters … Read more
Should shorcodes in i18n plugins be translated and if so, how?
Before I start, you should never ever use extract(). It is unreliable, and extremely hard to debug when it fails. For this specific reasons, it was (almost) completely removed from core and the codex. For more complete details, see trac ticket 22400. Along with query_posts, these are the two most commonly used and two worst … Read more
override pluggable.php functions
The short answer to your question is yes; however, the methods to do this are a little bit hacky and generally I would recommend against all of them unless absolutely necessary. Since pluggable functions actually replace the stock function by way of function_exists() whichever plugin that “plugs” the function first will win. What you want … Read more
Error : “Cannot use object of type WP_Post as array in”
This error is telling you that a post object has been passed into a function or method where an array was expected. The file you cited is the location there whe error was reported. Use a stack trace to determine where the error originated from to solve your problem.
Adding functions to hooks from within a class
I created a class instance and referenced that in add_action, which is moved below where the instance is created: if ( ! function_exists(‘add_action’) ) { header(‘Status: 403 Forbidden’); header(‘HTTP/1.1 403 Forbidden’); } if ( ! class_exists(‘My_Authentication’) ) { class My_Authentication { public function setup() { add_action(‘wp_login’, array(&$this, ‘no_auth_allowed’) ); add_action(‘wp_logout’, array(&$this, ‘no_auth_allowed’) ); } public … Read more
Add a row on clicking each post featured image
If you go with @Rituparna’s solution, try this: Don’t forget to add <a href=”#” class=”close”>X</a> in your container. jQuery(function($){ $(“.plink”).on(‘click’, function( event ){ event.preventDefault(); // cache the link clicked on var link = $(event.target); // use the link attr to target the desc var containerID = link.attr(‘href’); // get the description contained in the link … Read more