Method by which plugins and themes extend core WordPress functionality.

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1answer
3k views

Using the 'draft_to_publish' hook (post status transition)

I am trying to use the draft_to_publish hook (http://codex.wordpress.org/Post_Status_Transitions) to run a function when a post that is a draft becomes published. This hook does not appear to be ...
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3answers
104 views

When to use actions and when to use filters

I'm trying to understand where to use filters and where to use actions. Suppose I have a query in a plugin, which later add on modules might modify to change the results of the query, thus modifying ...
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3answers
3k views

What can I hook into after_setup_theme?

I'm wondering what can I or should I NOT hook to after_setup_theme? I'm wondering because I have been told that I shouldn't hook wp_enqueue_style to it, but I have seen other places using it to hook ...
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2answers
129 views

Too many actions/filters!

New to wordpress here. The concept of actions/filters in and of itself is not too difficult to grasp. What I am overwhelmed by is the HUGE amount of actions and filters available. When I am looking at ...
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1answer
4k views

WordPress Hook for user register

how can I tell WordPress, that if a user registers, it shall execute my function?
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3answers
540 views

Why doesn't wp_enqueue_script() work when including a JavaScript file with TEMPLATEPATH?

I am trying to use tips from here to add my JS file. I put the following in the functions.php of atahualpa theme I've got installed function lektor_init() { if (true) { ...
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2answers
1k views

Disable HTML (Text) Tab in Post Editor

I am attempting to disable the Text tab in the post editor but not having any luck. The first thing I want to do is set the Visual editor to be the default but this code does not work (it is being ...
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2answers
2k views

Add action hook conditionally - only when home.php in use

I am trying to add action hook in functions.php only if the page is home.php but the following does not work if ( is_page_template("home.php") ) { // do stuff } To make sure that file being used ...
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2answers
4k views

How to only hook on Single.php after content?

I am currently hooking on the_content() but that goes through the Wordpress loop too. How can I only hook on the Single.php page? Also, is there a way to only look on the first X posts in the ...
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3answers
591 views

wordpress custom modules/widget areas on the page? can i make my own?

im kind of a wordpress noob so please excuse my inexperience. so long story short, ive been tasked with creating a WP theme (kinda simple) but, one of the areas, around footer area, has a few things ...
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2answers
2k views

What hook should be used to programmatically create a post only when master post is updated?

Pippin and Jean-Baptiste Jung have very good tutorials on how to programmatically create content when a new post is published using these four actions hooks... publish{post_type} ...
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3answers
2k views

How to get url of a post from admin panel

I want to get post url from the back end edit post page, the edit post url is : www.ddd.com/wp-admin/post.php?post=1&action=edit the real post is: www.ddd.com/wp/?p=1 since the user can edit ...
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2answers
6k views

Hook 'wp_enqueue_scripts' priority has no effect

In a theme I am working there are up to 3 Stylesheets. I am using the hook 'wp_enqueue_scripts'. The order of the stylesheets is important for overwriting styles. I have a code like this: ...
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4answers
3k views

How to inject content after <body>

I would like to inject some elements directly after the <body> tag. Is that possible using only WordPress hooks?
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1answer
5k views

Execute function when post is published

I try to use this function i have created when a post is published for the first time. function a_new_post($post){ $post_id = $post->ID; if ( !get_post_meta( $post_id, 'firstpublish', $single ...
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1answer
233 views

filter the_title problem in nav

Hi I have a problem with the_title filter: I have this code at my constructor: add_filter( 'the_title', array($this, 'change_title') ); and this as callback (for testing purposes) public ...
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3answers
129 views

What are the benefit in adding hook in the init() hook?

I see a lot of plugins using this approach to add a new hook, e.g. add_action('init', function() { add_action('SOME_LATER_HOOK', xxx); add_filter('SOME_LATER_FILTER', yyy); }); Why they don't ...
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2answers
437 views

Check if do_action('custom_action') is hooked into?

Is there a way to check if a custom hook gets called upon? I would like to display a placeholder if no output will be passed to it.
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2answers
4k views

How to show an error message after publishing a post?

I'm using the transition_post_status hook to perform some operations after publishing a post. In some conditions I would like to show an error message in a red box under "Edit Post" and above "Post ...
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2answers
131 views

Failed to invoke other hook from the init hook

Related to this question (Use wp init hook to call other hooks?) but not the same. Sometimes, I found that the hook will failed to run when I place inside the init hook, e.g. Not Work: ...
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2answers
799 views

What are ideal hooks to call register_sidebars?

Where should a plugin ideally hook to call register_sidebar();? Will init do just fine? function my_plugin_register_sidebars() { $args = array( 'name' => 'foo' 'description' ...
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3answers
1k views

Is there a recover_post hook to go with trash_post hook?

I'm using the trash_post hook to set a flag in a custom table to indicate that this item is "deleted", but when the user chooses to restore that post, what hook can I use for that? I couldn't find ...
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2answers
4k views

Hook to get image filename when it is uploaded

I want to get the full local filename of an uploaded image so that I can copy it to a new directory and process it with my own image processing scripts. Which hooks/actions should I look into to ...
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1answer
60 views

Wordpress hook that gets featured image from direct URL?

I use a lot of plugins on my site so I'm trying to minimize the amount more plugins. I was wondering if there's a wordpress hook I can use so that I can use an image that is hosted on imageshack and ...
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1answer
31 views

WooCommerce add_action hook results in 500 error

I am trying to add a line of text on the checkout page of the store that will go immediately after shipping row. I added the following to my child theme functions.php file: add_action( ...
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3answers
131 views

On which hook should I be calling register_nav_menu(s)?

I've variously seen register_nav_menus() called: on after_setup_theme on init pasted "loose" into functions.php with no apparent change in functionality. Which hook should I be using to call this ...
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1answer
83 views

Cast string to number

Actually, I am using pre_get_posts hook with these configure $metaquery = array( 'relation' => 'OR', array( 'key' => 'price', ...
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1answer
810 views

Why does wp_enqueue_style() in plugin not load stylesheet?

I'm trying to load a custom stylesheet (for the front-end, not admin area) via plugin. As near as I can tell, I'm doing things the way the Codex says is correct, but my CSS doesn't get loaded. This ...
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1answer
133 views

Are posts updated or built from revisions + autosaves?

When editing a post in the admin I see records being added to the database to document my changes (here is part of the hooks I'm logging): ... http://local.dev/151-autosave-v1/ clean_post_cache ...
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2answers
942 views

Registration and Profile custom field

How to add custom field in wordpress registration form and view it in user profile in the backend? I've already google it but just find how to add it in user profile but not in registration process.
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2answers
3k views

Reposition Woocommerce Message

I'm trying to reposition the messages in my Woocommerce theme. For example the successfully added to cart message. They appear to automatically be placed at the very top of where the woocommerce ...
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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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2answers
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() || ...
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1answer
470 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
498 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
11k 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
42 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
66 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
498 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
170 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
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
400 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
83 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
296 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')); ...