Method by which plugins and themes extend core WordPress functionality.

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3answers
1k views

How many times can I hook into the same action?

I have a theme which includes some setup, using after_setup_theme but I'd like to write my own functions which also need to run after_setup_theme. I'd prefer to keep my stuff in a separate file. Can I ...
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3answers
453 views

Insert all post IDs in new database table

I have a plugin which creates a new database table. Upon activating the plugin is there a way to insert all my posts ids into that table? Right now I'm using an action hook to immediately insert the ...
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3answers
101 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
6k views

How can I edit post data before it is saved?

I have a plugin and I would like to be able to run the post content through some filters before it is saved to the database. From looking at the plugin api, I see that two hooks that look like they ...
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1answer
3k 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
524 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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3answers
2k views

Hook on trash post

I want to perform an action when I delete one of my custom post types, which hook should I use: wp_trash_mycpt or trash_mycpt My action should run solely when mycpt is in the 'publish', 'draft' ...
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1answer
1k 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
109 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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3answers
489 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
876 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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1answer
2k 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
201 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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2answers
781 views

action lifecycle

I'm looking for a documentation page where wordpress action lifecycle is explained. Does it exist? I can't understand if init is called before admin_head or viceversa (even if the name is ...
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3answers
126 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
172 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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1answer
575 views

the_posts hook, which set of posts?

I want to modify search results. Currently I hook to the_posts and check wp_query->is_search to determine if I am looking at the search results page. However, I noticed that the_posts is executed ...
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4answers
1k 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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2answers
115 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
659 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
786 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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1answer
116 views

Implementing DNS Prefetching with WordPress

I'm not sure whether my question sounds promising or not but what I'm going to ask is very much relevant. So please read the full question before down voting or flag. I'm trying to implement DNS ...
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1answer
56 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
626 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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3answers
9k views

Woocommerce Product Category Widget - hide categories that have no products in stock [closed]

I'm using WooCommerce on my Wordpress site, and have a widget in the sidebar showing all product categories. It's setup to hide empty categories, and that works well. However, it still shows ...
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2answers
2k 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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2answers
3k 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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2answers
89 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
431 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
1k 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
299 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
527 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
486 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
65 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
183 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
75 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
257 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
31 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
820 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
243 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
132 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
158 views

how to determine how many and what kind of arguments are passed to hooks

I am not able to understand a very logic behind add_action / add_filter Consider following example: function SearchFilter($query) { if ($query->is_search) { $query->set('post_type', ...
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1answer
813 views

How can I tell if I'm on a login page?

There are functions for is_home(), is_blog() is_single() etc... What's the best way to tell if I'm on a page that is requesting that I login? I guess that would just be the wp-login.php page.
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2answers
383 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
767 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 ...