Remove action from a plugin - php

We use a plugin which add a filter to hide some order meta. Now we want to remove them via child theme instead of editing the plugin file. I tried every answer from here but the action is not removed: https://wordpress.stackexchange.com/questions/240929/how-to-remove-action-from-plugin and Removing action added by a plugin in Wordpress
This is the Plugin function:
public function __construct() {
add_filter( 'woocommerce_order_item_get_formatted_meta_data', [ $this, 'hide_extra_data' ] );
}
I tried with that already, but I'm not sure if this is the right way to do it.
add_action( 'woocommerce_order_item_get_formatted_meta_data', 'remove_my_action', 1 );
function remove_my_action(){
remove_action('woocommerce_order_item_get_formatted_meta_data', 'hide_extra_data', 10, 1);
}
remove_action( 'wp_fwoocommerce_order_item_get_formatted_meta_dataooter', 'hide_extra_data', 1 );

Try like this:
add_action( 'plugins_loaded', 'webearth_remove_plugin_filter' );
function webearth_remove_plugin_filter() {
remove_filter( 'woocommerce_order_item_get_formatted_meta_data',
array('ClassName', 'hide_extra_data'),
10 );
}
Change ClassName with the name of the class used by the plugin, the Class where the constructor is.

Related

Replace/Overwrite wordpress plugin class function

I am trying to replace or overwrite an action hook declared inside a wordpress plugin class
class WCFM_Withdrawal {
public function __construct() {
global $WCFM;
// WCFMu Thirdparty Ajax Controller
add_action( 'after_wcfm_ajax_controller', array( &$this, 'wcfm_withdrawal_ajax_controller' ) );
}
Here the add_action hook which points the function. I want to replace "wcfm_withdrawal_ajax_controller" with my own function.
add_action("init", function () {
// removing the woocommerce hook
global $WCFM;
remove_action( 'after_wcfm_ajax_controller', array( $WCFM, 'wcfm_withdrawal_ajax_controller' ) );
});
add_action( 'after_wcfm_ajax_controller', 'my_new_function' );
function my_new_function(){
//Do something here
}
i have tried to remove_action and add my own function, but didn't work.
Make sure you have the correct Class instance. Your example shows $WCFM, but the class declaration is WCFM_Withdrawal. Is $WCFM an instance of WCFM_Withdrawal? If you have determined that you do have the appropriate class instance, you may be running the remove_action too early (before the one you want to remove is added).
You can try lowering the priority of your init function:
add_action( 'init', function () {
// removing the woocommerce hook
global $WCFM;
remove_action( 'after_wcfm_ajax_controller', array( $WCFM, 'wcfm_withdrawal_ajax_controller' ) );
}, 99 );
I'd say you could also try a later Action Hook than init, but since this appears to be an AJAX handler, that probably won't suffice. Start by making sure that you've got the correct class instance variable, and then bump down the priority of your removal.

Disable Plugin Per Page - WordPress

I am working on a way to disable a specific plugin on a certain product page. I've cobbled this together from things I found online and the plugins code itself but its not working. Curious to have some fresh eyes have a look and let me know what might be failing. The post id of the product is 2679320. The actions I have set to remove are the ones referenced in the plugin wp_enqueue_scripts. Here is the code I'm trying by loading to snippets:
function remove__construct() {
global $post;
$ids = array(2679320);
if(in_array($post->ID,$ids)):
remove_action(‘wp_enqueue_scripts’,array($this,’enqueue_scripts’));
remove_action(‘plugins_loaded’,array($this,’load_txt_domain’),99);
remove_action(‘wp_footer’,array($this,’get_popup_markup’));
remove_filter( ‘pre_option_woocommerce_cart_redirect_after_add’, array($this,’prevent_cart_redirect’),10,1);
endif;
}
add_action(‘wp_head’, ‘remove__construct’, 1);
Any ideas why this isn't working? What did I miss? Anyone have better way to do this?
You can use Plugin Organizer. It allows you to selectively disable a plugin on a page or a complete post type.
There are 2 ways to disable plugin.
The first way is to create a custom plugin that removes the action that used to initialize your target plugin. The second way is to remove actions and filters which add scripts, styles and makes changes on a page.
Either way you choose, you have to remove actions after they've been added and before they actually worked. That means that for the first way in most cases you have to use plugins_loaded hook which can't be used in your functions.php (the first hook which can be used in functions.php is load_textdomain hook). in case you want to disable the plugin on certain pages you have to somehow get the current post ID, which isn't so easy because global $post variable is not available yet (The earliest hook with $post is wp).
Parameters for your remove_action depend on plugin add_action. The main point here is that all parameters of your remove_action must be the same as add_action parameters. Here are some examples :
add_action('plugins_loaded', 'init_function_name');
remove_action('plugins_loaded', 'init_function_name');
add_action('plugins_loaded', 'init_function_name', 100);
remove_action('plugins_loaded', 'init_function_name', 100);
class Plugin_Classname {
public static function init() {
add_action( 'plugins_loaded', array( __CLASS__, 'on_init' ) );
}
}
remove_action( 'plugins_loaded', array( 'Plugin_Classname', 'on_init' ) );
class Plugin_Classname {
public function __construct(){
add_action('plugins_loaded', array($this, 'init'), 99);
}
public static function get_instance(){
if(self::$instance === null){
self::$instance = new self();
}
return self::$instance;
}
}
remove_action('plugins_loaded', array( Plugin_Classname::get_instance() , 'init'), 99);
Let's begin with the easiest way. Assume that removing scripts and styles is enough. Then you have to find wp_enqueue_scripts hooks in the plugin source. Eq.:
class Xoo_CP_Public{
protected static $instance = null;
public function __construct(){
add_action('plugins_loaded',array($this,'load_txt_domain'),99);
add_action('wp_enqueue_scripts',array($this,'enqueue_scripts'));
add_action('wp_footer',array($this,'get_popup_markup'));
add_filter( 'pre_option_woocommerce_cart_redirect_after_add', array($this,'prevent_cart_redirect'),10,1);
}
public static function get_instance(){
if(self::$instance === null){
self::$instance = new self();
}
return self::$instance;
}
}
As we need global $post variable we gonna use wp hook. Place the code below in functions.php:
function disable_plugin() {
global $post;
$ids = array( 2679320 ); // Disable plugin at page with ID = 2679320
if( in_array( $post->ID ,$ids ) ) {
remove_action('wp_enqueue_scripts',array( Xoo_CP_Public::get_instance(),'enqueue_scripts'));
remove_action('plugins_loaded',array(Xoo_CP_Public::get_instance(),'load_txt_domain'),99);
remove_action('wp_footer',array(Xoo_CP_Public::get_instance(),'get_popup_markup'));
remove_filter( 'pre_option_woocommerce_cart_redirect_after_add', array(Xoo_CP_Public::get_instance(),'prevent_cart_redirect'),10,1);
}
}
add_action( 'wp', 'disable_plugin' );
What if we want to remove an action is used to initialize this plugin? Let's take a look at add_action:
add_action('plugins_loaded','xoo_cp_rock_the_world');
In this case we can't use plugins_loaded hook because add_action is being called without priority parameter. If it's being called with priority parameter we could just create disable-plugin.php file in /wp-content/plugins folder and place this code there:
function disable_plugin() {
remove_action('plugins_loaded', 'xoo_cp_rock_the_world', 100);
}
add_action('plugins_loaded','disable_plugin');
But it's useless in this case without priority parameter. Yet we can cheat! We don't have to use any hooks and call remove_action directly. We should call it after target plugin add_action was called. Plugins are loaded in alphabetical order so if we named our plugin 'zzz-disable-plugin.php` with this lines of code:
/* Plugin Name: zzz-disable-plugin */
remove_action('plugins_loaded', 'xoo_cp_rock_the_world');
The target plugin will be disabled. At all pages though. I haven't find a way to get ID of current page on such an early hook. But we can use URI :
/* Plugin Name: zzz-disable-plugin */
if( 'product/polo' == trim( $_SERVER[ 'REQUEST_URI' ], '/' ) ) {
remove_action('plugins_loaded', 'xoo_cp_rock_the_world');
}

Send Woocommerce email on custom action not working

I'm trying to send a custom email when a post is published using the Woocommerce email template.
I have included the template and class which Woocommerce loads using the woocommerce_email_classes and have also registered the custom action send_entry_list in the woocommerce_email_actions filter.
do_action('send_entry_list', $competition_id, $entry_list_url);
When adding add_action to this within the class-entry-list-email.php which triggers the email, it's not printing out 'triggered' in the debug.log file.
Does anyone know why this isn't firing?
public function __construct() {
add_action( 'send_entry_list', array( $this, 'trigger' ) );
}
public function trigger( $competition_id, $entry_list_url ) {
error_log(print_r('triggered', true));
}
add_filter( 'woocommerce_email_classes', array($this, 'add_draw_number_email'));
function add_draw_number_email( $email_classes ) {
// include our custom email class
require( 'includes/class-entry-list-email.php' );
// add the email class to the list of email classes that WooCommerce loads
$email_classes['Entry_List_Email'] = new Entry_List_Email();
return $email_classes;
}
add_filter( 'woocommerce_email_actions', array($this, 'crwc_register_custom_order_status_action'));
function crwc_register_custom_order_status_action( $actions ) {
$actions[] = 'send_entry_list';
return $actions;
}
Actually, you are missing _notification in the add_action hook. In WooCommerce email, you need to add _notification in the tag name of do_action.
In your case, you are using send_entry_list in both do_action and add_action whereas in add_action you just need to append _notification in the tag name so hook name becomes send_entry_list_notification.
To make this easy for you just do the following change.
Replace this line:
add_action( 'send_entry_list', array( $this, 'trigger' ) );
with this:
add_action( 'send_entry_list_notification', array( $this, 'trigger' ), 10, 2 );
Hope, it works for you.
Change hook as below and try,
add_action( 'send_entry_list', array( $this, 'trigger' ), 10, 2 );

Remove Woocommerce action from external plugin

I'm switching to a new Wordpress plugin I've written myself that will run along side an old plugin on top of the Woocommerce cart. While I'm running the two plugins I want to remove the old plugin's action that calls it's table to display in the users my account page. I will be adding logic after to work out if it's needed, but for now I just need to remove it.
This is how the action is being called in the old plugin.
class WC_Subscriptions {
public static function init() {
// Display Subscriptions on a User's account page
add_action( 'woocommerce_before_my_account', __CLASS__ . '::get_my_subscriptions_template' );
}
}
WC_Subscriptions::init();
So far in my own plugin I have called the following and none of them work.
remove_action( 'woocommerce_before_my_account', array('WC_Subscriptions', 'get_my_subscriptions_template' ) );
// no error but still shows the table
and the last one
remove_action( 'woocommerce_before_my_account', array( WC_Subscriptions::init(), 'get_my_subscriptions_template' ) );
// Fatal error: Class 'WC_Subscriptions' not found in /var/sites/XXXXX on line 45
I have tried changing/adding the $priority from 1, 9, 10, 11 and 99 and that doesn't work either.
It's frustrating as I'm sure it would work if the old plugin was initiated with a new instance so I could do this
global $my_class;
remove_action( 'woocommerce_before_my_account', array( $my_class, 'get_my_subscriptions_template' ) );
Can anyone help?
This always happens, just worked it out.
I needed to hook the remove_action into another action that is called much later.
In the end I did this
class My_new_plugin {
public function __construct() {
add_action( 'wp_head', array($this, 'remove_action_woosubscription_table' ) );
}
public function remove_action_woosubscription_table() {
remove_action( 'woocommerce_before_my_account', array( 'WC_Subscriptions', 'get_my_subscriptions_template' ) );
}
}
You can set third attribute 'priority' as 999
<?php remove_action( $tag, $function_to_remove, $priority ); ?>

WordPress remove_filter() to remove theme JS hook via plugin

I have a theme that is adding a custom, full-screen background image via jQuery. The theme is doing this via a class object called td_background. Within the class is a function called wp_head_hook(), and within this hook, a filter is being added for the custom bg. It looks something like this:
class td_background {
// ..some stuff
function __construct() {
add_action('wp_head', array($this, 'wp_head_hook'), 10);
}
function wp_head_hook() {
add_filter( 'td_js_buffer_footer_render', array($this, 'add_js_hook'));
}
function add_js_hook($js) {
// Custom JS added here for background image
return $js
}
}
new td_background();
I'm now trying to de-register the add_js_hook in a custom plugin I'm writing, but am having trouble wrapping my mind around how to do it with all this nesting. I've tried a few things, such as:
<?php
// This...
remove_filter( 'wp_footer', array($td_background, 'td_js_buffer_footer_render'));
// ...and this
remove_filter( 'wp_footer', 'td_js_buffer_footer_render');
// ...and even
remove_filter( 'wp_footer', 'add_js_hook', 100);
?>
I've also tried changing the above to wp_head.
Thoughts? My end goal is to de-register this JavaScript in the footer, so that I can add my own in place of it.
As it's being instantiated anonymously, we have to use the handy function remove_anonymous_object_filter() from WPSE, it would be something like:
// Run this from a plugin
add_action( 'template_redirect', 'kill_anonymous_example', 0 );
function kill_anonymous_example() {
remove_anonymous_object_filter(
'wp_head',
'td_background',
'wp_head_hook'
);
}
I tested killing wp_head as I don't have a td_js_buffer_footer_render running.

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