Method by which plugins and themes extend core WordPress functionality.

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90 views

Same Conditionals Not Working on Two Different Hooks

Everyone! I am new to WP and trying to build a plugin. I have the following codes working properly: add_filter('the_content', 'say_hello'); function say_hello($content){ if(is_single() || is_page(...
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1answer
477 views

Hook up MU site creation

I want to write a plugin so I can hook up the wp_install_defaults function. I actually need to do the following: when a new site is created, I want to import a default XML file with some categories ...
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2answers
2k views

post meta data clearing on autosave

For starters I am using this GREAT answer to achieve custom post types as well as a custom way to insert those post types into other pages, you can view that answer here: Custom field/meta populated ...
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3answers
305 views

How to find hooks as per Just-In-Time approach?

How can I follow Just-In-Time approach in hooking up my function to an action? I mean everybody just attach the functions to a very early stage like init which leaves the scope of optimisation. I saw ...
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2answers
2k views

Is there an “Add Page” hook?

I'm looking for the action hook corresponding to the click on the "Add page" link. Any idea? Thanks !
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3answers
569 views

Good tools for locating hooks in a wordpress page/admin interface/blog post?

I've recently started using the Hikari Hooks plugin for Wordpress as it seems to allow you to get a good idea of what do_actions are being called on the page, so that you can easily find out where ...
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1answer
501 views

A good way to add a different background image for each page?

I'm working an a Thematic child theme wherein I need to have a unique image decorating each of the site's main pages, from a pre-defined set of permanent images. It would also be ideal to have one of ...
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3answers
12k views

Remove title attribute from images

I'm looking for a way to remove the title attribute from images, preferably through using a hook or a filter. Most clients don't bother giving images a proper title, thus eliminating the purpose of ...
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1answer
52 views

I don't understand why I shoud use lostpassword_url hook?

Look into my comment in the code below: // WHY can I not just do this? class Customuser { public function __construct() { // Using this when using lost password functionality ...
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2answers
71 views

Wordpress action and filter hooks runs asynchronously?

I have some functions that run fairly long to complete. These functions are called via hooks registration (i.e. add_action() and add_filter()). Would it impact the end-users when my tasks runs for a ...
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1answer
573 views

Edit admin post page

I have to customize the admin page where you edit the other pages "wp-admin/post.php". I have to add a lot of things, and delete others, change colors and add a custom menu to the top. I don't know ...
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2answers
3k views

Fatal error: Class not found in

I am working on a plugin for 'hooking' an extra payment provider into a checkout system. I have a class gtpCheckoutData in my function.php which calculates the prices. In my plugin I want to use ...
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1answer
181 views

Please explain me what the do_action does

I am trying hard to understand do_action but not understanding. I was studying the blane theme. And they have this code in sidebar.php <div id="secondary" class="widget-area col-md-3" role="...
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2answers
3k views

wp_ajax action is not running

I'm writing a plugin. I want to run the method get_my_option when someone pressing a button in the settings page of my wordpress plugin. The ajax call is made but the method never runs. In the page I ...
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2answers
454 views

How can i do something after head like adding a hook for after head but before post

What i mean is i am trying to add breadcrumbs to my blog and i thought of adding it before content or after title but there's an issue with that - on archive pages or category pages the breadcrumbs ...
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1answer
85 views

Question about how do wordpress filters/actions work

I have a question that I'm curious. In WordPress we can add a filter or action like this code: add_filter($filter_Name, $function_will_be_hook); add_action($action_Name, $function_will_be_hook); ...
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2answers
298 views

How to update WordPress core or themes and still have my child theme hooks work

I made a child theme based on the WordPress twentytwelve theme (i.e., the WordPress 'twentytwelve' theme is its parent). Some of the modification were done very simply by overriding style, using my ...
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2answers
34 views

Is it possible to add an action to the currently running action?

My question is very simple but I haven't found this answer yet. Here's an example: class MyClass { public function __construct(){ add_action('init', array($this, 'init')); add_action('...
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1answer
726 views

How to remove a metabox from menu editor page?

I am not sure if it is much different for any page but I am wondering how to remove a metabox from the appearance>menu page without having to go into the wordpress core files and remove it. Is there ...
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2answers
1k views

WordPress Ajax Problems

Update I got it to fire using the following curl command: curl -H "Accept: application/json" -X POST http://localhost/wordpress/wp-admin/admin-ajax.php -d "action=vixo_wordpress_signon&data=...
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3answers
348 views

Creating a function that receives the taxonomy terms that have been changed in a custom post type

Ive been looking into actions and hooks etc... from wordpress, but cant seem to do a very simple thing. I just want to execute a function whenever a post is updated, and within the function I want the ...
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1answer
61 views

How to check if upload window came from the featured image link?

I need to verify if the media-upload screen came from a click on the "feature image link" on the admin screen. How can i do it? I've already change the way the uploader works , but I need to check ...
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1answer
171 views

How to Remove the “Restore” Link in Quick Edit?

I want to know is there any hook to remove the Restore link in the edit page - trash page? /wp-admin/edit.php?post_status=trash I know I can hide it with a css/jquery trick, but I prefer to use a ...
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1answer
40 views

Is there any way to allow a plugin to write over a previous version?

When installing a plugin, it will not install if the directory to which it is attempting to install already exists. This means that users of our plugin must first manually deactivate and delete the ...
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2answers
551 views

add action for displaying posts using a shortcode

I'm developing a simple plugin for letting a user insert a post from the frontend. I have a shortcode [add-post] which a user can put on any page, say, for eg. My Wall Page Now on My Wall Page a ...
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1answer
864 views

functions.php conditional tag - only show in single.php?

//Geo Map add_action( 'woo_post_inside_after', 'my_geo_mashup' ); function my_geo_mashup() { global $post; if ( in_category('listings') ) { echo GeoMashup::map(); } } Works to ...
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1answer
1k views

How to check if certain plugin exists and in expected version

I've created plugin that goes to wordpress plugin repositories. Now, I need to create another plugin (sub plugin or child plugin you may call) that require this certain plugin to be already installed ...
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1answer
31 views

Which hook is fired when inserting media into a post

I want to add numbering to each image when I insert them into the post. For example if I insert 3 images into a post, there will be: Image 1 Image 2 Image 3 I looked through the WordPress ...
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1answer
58 views

How to add theme support?

I figured this would have been a question already, but I haven't come across it. I'm wondering what the correct hook for checking theme support is in a theme and also a plugin. function ...
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1answer
143 views

Create a plugin to change the action to which a function is hooked

I have a plugin that hooks a function on to the woocommerce_before_my_account action. I would like instead for the plugin to hook that function to the woocommerce_after_my_account action. If I ...
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1answer
304 views

Gravity Forms - Using a Form to Pre-populate A Gravity Form

I have a custom form (hardcoded, not a GF) on one page I've written myself: <form id="tailor-select" method="POST"> <ul> <li> <ul> <...
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2answers
175 views

action hook wp_head higher priority as all other plugins/hooks

I work a bit with the wordpress API and I want to try to include a <meta>-tag into my head area of my website. This is my code (works everything fine!): class dmd_noindex_options_page{ ...
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1answer
80 views

Adding dynamic section to WordPress

[Edit: I've added a more concrete example below] I need to convert a custom PHP site to WordPress. The site has 60,000+ media items along with a ton of metadata, all of which needs to carry over to ...
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1answer
289 views

Can I remove WooCommerce main content hook?

<?php /** * woocommerce_before_main_content hook * * @hooked woocommerce_output_content_wrapper - 10 (outputs opening divs for the content) * @hooked woocommerce_breadcrumb -...
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1answer
31 views

What hook/filter can I use to add/edit/show/hide the title under (on hover) links on the table view?

I'm not entirely sure the name given to these links, but the class is called "row-actions".
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2answers
1k views

How to add a button to custom post type's posts-page

How can I add a button to a posts -page. (In this case a custom post type). I'd like to place it next to, or near, the "Add new" button, to import content from a web service.
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2answers
870 views

Pass info from functions.php to plugin

What is the best way to pass some information from functions.php to a plugin? I need to give a user the ability to pass a piece of data from their functions.php file to my plugin. (It can be any data,...
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1answer
104 views

get_header and hook avoid normal call

I would like to use a custom header, like get_header('new') But I cannot modify the templates easily where the calls are being made due to several reasons. (many files and same code base deployed on ...
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1answer
31 views

What's hook to use immediately after a user is authentcated [duplicate]

Does anyone know the add_action() hook to use immediately after a user is successfully authenticated. Hook Test based on @mmm's answer I ran this test from my mu-plugins.php file: function ...
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1answer
231 views

Execute a function when admin changes the user role

How can I execute a function, when admin changes the user role of a user? I have two user roles: one is agent and the other one is client . My need is that when admin changes the user role of ...
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1answer
656 views

Issue adding text after short description on product pages Woocommerce [closed]

I am trying to add some text after the short description on woocommerce. I have come up with the following add action but when I use it, it replaces the existing short description text. Is there a ...
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2answers
360 views

add_action for unknown custom post types

If the custom post type is known (e.g., 'reference') then the add_action is add_action( 'publish_reference' , 'run_new_post_code' ); Great. But what is the proper code for an unknown custom post ...
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1answer
65 views

Namespaced action and filter tags

I'm upgrading several of my plugins to use PHP namespaces, so that functions, classes, constants etc are all namespaced correctly. <?php namespace my\plugin; function init() { ... } // ...
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1answer
463 views

Searching hook to set cookies before <head> and avoid “headers already sent”

I have written a plugin that sets cookies, and need to avoid the "Headers already sent" PHP error by placing the code at the very top before the head section. Themes usually place wp_head just before ...
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1answer
83 views

Add parameter (time) to oembed

I need to add a time parameter to the YouTube oEmbed callback. This time parameter should be set via URL. I found various answers which describe how to hook into the oEmbed callback, but none of them ...
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2answers
149 views

apply_filters/do_action tag characters limit

Does apply_filters/do_action $tag name have a characters limit? Can be any problems if the tag name is way too long? I ask this because I know that WP transients have a limit of 45 characters. FYI, ...
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1answer
251 views

Plugin activation hook in an abstract class

I would like to create a common abstract class to use for every WordPress plugin that I develop. As a part of the class' initiation process, I would like to fire the activation hook which calls an ...
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1answer
170 views

How to hook in after user's registration email has been sent?

I want to redirect to a page after the user's registration email has been sent. What is the correct hook? user_register is too early, that is the user is entered into the database but the email isn'...
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1answer
571 views

Setcookie works on admin but not front end

I have a simple function to set a cookie to the value of whatever parameter is attached. For example, if I visit http://example.com/?devsource=http://dev.example.com/ it should set the value of the ...
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1answer
78 views

How to find a callback attached to a bbpress hook?

bbpress has a large number of callbacks attached to various hooks. I am familiar with this feature at the wordpress level but I am unable to locate where bbpress registers a large number of these ...