Method by which plugins and themes extend core WordPress functionality.

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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
552 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
490 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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1answer
98 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" ...
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2answers
1k 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
244 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
77 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
274 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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33 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')); ...
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2answers
936 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 ...
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3answers
266 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
59 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
149 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
39 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
2k views

Adding custom text in items titles from wp_nav_menu()

I need to add something after each title of a specific menu called by wp_nav_menu() I tried add_filter('wp_nav_title', 'testing_stuff'); with function testing_stuff() { $item->title = ...
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2answers
445 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
793 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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2answers
41 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
297 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 ...
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1answer
16 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
52 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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2answers
169 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
53 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
281 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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2answers
2k 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
58 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
91 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
108 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 ...
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1answer
396 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
62 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 ...
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2answers
72 views

How to place HTML below the title of the (custom) post overview

Edit: Yes, I know, I provided an answer to this question myself. However, I'm still interested in other solutions and/or comments on the one I found. Is this how you would do this? Are there any other ...
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1answer
282 views

Filter or action hook to insert content on admin pages before </body> tag

I am developing an administrator plugin and want to be able to write some HTML content just before the last body tag . This content will initially be hidden then displayed with javascript when a user ...
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1answer
102 views

Redirect logged in users if they are on a specific page

I'm trying to prevent a user access besides the admin to the registeration page and reset password page if they are already logged in. I have the following: function redirect_loggedin_users() { // ...
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1answer
3k views

Customize user account activation message

During the process of a user creating a new account, once they click on the link in the activation email, they receive the message on the login page: Your account is now active! Username: ** ...
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2answers
264 views

remove_action conditionally for Custom Post Type

By default, my theme is showing an author box below my posts. I am using a custom post type, and would like to remove this author box only on this post type. Here is how the theme is calling the ...
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1answer
210 views

Get current page_id before loop, in functions.php

In the Shoestrap theme, you often change content by using hooks. I want to add the following to functions.php but it doesn't work... // in functions.php if ( is_home() ) { add_action( ...
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1answer
186 views

Should I use function_exists() and/or add_action() in theme development?

I'm trying to get my theme ready for publication on WordPress.org I got this feedback: function_exist() it is not preferable 3.0 design Now I wonder what I'm doing wrong. In the current ...
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2answers
285 views

How to trigger the core WPLANG to make automatically set a language when the theme is activated? [duplicate]

I'm developing a theme especially for Bānglā blog posting, and it'd be under GNU license. I questioned about a Calendar Widget translation with some problems today, and got a comment saying: I'm ...
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1answer
379 views

Set template based on query in URL

I want to be able to force WordPress to load an page/post based on a query in the URL. www.mywordpresssite.com/posts/myarticle?template=custom This URL should load the myarticle post using template ...
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1answer
410 views

How do I successfully create a hook for an email override?

I'm creating an online apartment rental application using Visual Form Builder Pro. I need to have completed forms go to certain managers based on the property selection. Once a user selects a ...
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1answer
2k views

Wordpress: Apply filter/hook to a particular sidebar widgets?

I'm developing a theme that has more than 5 different sidebars and I want to apply a function to a particular one of them for styling purposes. Basically, the function will modify it's params using a ...
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1answer
427 views

Remove rewrite rules generated by plugin during deactivation‎

I have a simple plugin like the following add_action('generate_rewrite_rules', function ($wp_rewrite) { $wp_rewrite->rules = xxx + $wp_rewrite->rules; }); if (is_admin()) { ...
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1answer
551 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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1answer
295 views

Better post meta efficiency?

I work with websites which require using Post Meta for Post Objects within a particular Post Type. I often add a Meta Box to a particular Post Type, to provide additional settings for the new Post ...
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1answer
330 views

Alter image output in content

I'm trying to implement the JAIL javascript into my WordPress install. The javascript requires me to add a data-attribute and change the output html of images. I have been looking through the codex ...
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1answer
367 views

Count singular post views automatically

I'm trying to add some function to each loop called in the themes. What I'm doing is I add a function to count post view from here post views without plugin, to use the function I need to add this ...
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1answer
183 views

Checking post format during xmlrpc_publish_post

WordPress apparently stores post format information outside of the $post object. During publish_post this isn't (usually) a problem because you can check on formats via get_post_format( $post->ID ) ...
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2answers
216 views

Strict tag list - user should choose only existing tags for posts

While selecting tags for the posts the user is able to create new tags on fly. For example we have the tag 'animal' but the user misstpye it as 'aminal' - and Wordpress creates it. In our blog the ...
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1answer
9k views

The hook for the AJAX Add to Cart button?

Anyone here ever had the need to add the AJAX add to cart button (the one located on product archives) on a custom query post output? Do you mind sharing the hook? I can't seem to find the correct ...