Method by which plugins and themes extend core WordPress functionality.

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3
votes
3answers
4k views

How to hook wp_list_pages?

How can I hook the wp_list_pages function so that it reads a value of a custom field and displays it instead of displaying the page title?
3
votes
1answer
366 views

the_content and wp_link_pages

Many plugins seem to be adding a filter/action hook to the_content to display related posts, advertisements and such. The problem is I these appear before the post pagination so it the pagination is ...
3
votes
2answers
267 views

How to make post and comment count unclickable with dashboard_glance_items hook

I have a multi author site and I have already used some hooks to stop them from viewing other author's posts and media. Now, in the Wordpress Dashboard in the "at a glance" section it shows them the ...
3
votes
2answers
3k views

why doesnt is_home() work in functions.php

I'm pulling in scripts.php through functions.php. this is in scripts.php but for some reason, wordpress isn't recognizing is_home(). i've tried resetting the query, but to no avail. Am I hooking into ...
3
votes
3answers
3k views

Wordpress hook before inserting post into database

I need to do check the inserted post for certain keywords and perform some functions depending on the keywords found. is there a wordpress hook that executes "just before the post is inserted into ...
3
votes
2answers
181 views

Hook *after* user password change?

I know that password_reset hooks: Runs after the user submits a new password during password reset but before the new password is actually set. but there is a similar hook AFTER the new password ...
3
votes
1answer
181 views

Is it possible to save/modify a post without calling the “save_post” action hook?

There is a save_post hook that is run when you save a post. In fact, revisions and autosaves also call this hook. Even if you simply change the status from published to draft it triggers the save_post ...
3
votes
2answers
2k views

wp_mail - Remove sitename from email subject

Can some one tell me how to remove site name from email subject. As of now my email subject looks like this [sitename] - Subject goes here I want it to look like this Subject goes here I ...
3
votes
1answer
811 views

What does (10, 2) mean when used with add_filter

Please tell my what is 10, 2 in below mention code: add_filter('nav_menu_css_class', 'add_active_class', 10, 2 ); function add_active_class($classes, $item) { if($item->menu_item_parent == 0 &...
3
votes
3answers
12k 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 ...
3
votes
1answer
6k views

How to use the_excerpt in a filter hook?

I was hoping to process the_excerpt just like one would with the_content, but no such luck. How can I pass the excerpts of a Posts Page, through my plugin? I've tried variations on this: add_filter(...
3
votes
2answers
243 views

How to hook into the CPT's title placeholder?

I want to change the default placeholder text in my Custom Post Type title field. This isn't possible while registering a new post type. The following screenshot describes it.
3
votes
3answers
847 views

how to limit edit_form_after_title hook to page and post edit only?

heelo, I want to use this great hook edit_form_after_title it was announced on December 1, 2012: http://make.wordpress.org/core/2012/12/01/more-hooks-on-the-edit-screen/ it curreclty hook for : ...
3
votes
2answers
9k views

Add subtitle to Woocommerce product title

I'm using WooCommerce on a site built with Pagelines Framework. I need to have a subtitle/customisable field appear under the product name anywhere it appears in the site. As it is, WooCommerce doesn'...
3
votes
1answer
709 views

Hook into admin post list page

So I want to create a custom admin interface for the post and page lists. I want it to be a split view with a list of posts and some data on the left, and a full editable preview of the post on the ...
3
votes
4answers
5k views

Filter specific shortcode output?

Is there a hook in WordPress that I can use to filter the output of a specific shortcode? Something like this: add_filter('shortcode_output', 'my_filter_function', 2); function my_filter_function ( $...
3
votes
1answer
630 views

Is there an action for when permalinks are rebuilt?

In my plugin, I have a list of titles and permalinks in the options table. It's updated every time my custom post type is saved. Since I'm saving permalinks the option data can become bad if the ...
3
votes
3answers
5k views

Hooking a function onto the sidebar?

I'm looking for a way to add some content to the top of the sidebar when it get's loaded. I've tried hooking onto the get_sidebar action as referenced here, but it seems to override the sidebar call ...
3
votes
1answer
41 views

'post_type_link' filter not working

I know it should work fine, don't know if this is a recent bug or something. So, to confirm it, I installed a fresh wordpress using default theme. I made a small plugin like bellow: <?php /* ...
3
votes
1answer
67 views

Hook/notify when any option or setting is added or updated

I know about: add_option_{option_name} update_option_{option_name} but these need specific option names. What I am looking for is a way to know if and when any option is changed (added or updated). ...
3
votes
1answer
61 views

How to add a link to Wordpress Plugin install Listing

When an user searches for a plugin from the WP Admin's Add Plugin area, I want to add a link/button to every plugin's listing area. Which hook should I use? The location where I want the link is ...
3
votes
3answers
4k views

Check if action hook exists before adding actions to it

I am trying to add a rel=next and rel=prev link tags to the head element of image.php template file. I have Wordpress SEO installed and I like to hook to this plugin wpseo_head action hook to achieve ...
3
votes
1answer
2k views

WP Multisite: Adding pages on blog creation by default

I’d like to have a page added by default when a new site is created with WP Multisite. So I have my function that creates two pages: function my_default_pages() { $default_pages = array('Impress'...
3
votes
2answers
276 views

Identify which loop you are hooking into; primary or secondary?

What is the most efficient way to determine which loop I'm in? I have a few plugins that alter the query by hooking into various parts of WP_Query::get_posts(), through the usual suspects, ie ...
3
votes
2answers
836 views

Seeking clarification on page request life-cycle

I'm just trying to get my head around the "life-cycle" of a typical page request in WordPress. The Action Reference page lists 38 actions that occur during a typical page load, but two things aren't ...
3
votes
1answer
31 views

Generic plugin (de)activation hook?

I am looking for a way to track which user activates or deactivates a plugin for logging purposes. I've been searching around, but can only find information for plugin developers to have a hook to (de)...
3
votes
1answer
20 views

What function to hook for changes made in status and visibility of a post

I have a function to run every time a post is published or updated in anyway. Right now I am doing function myFunction(){ //Do Something } add_filter('publish_post','myFunction'); add_filter('...
3
votes
1answer
458 views

Check php version before theme activation

I've got theme that requires php 5.3+ version. If older - fatal error occurs with it. So what I need to do when user try to activate this theme is to check php version before going into theme code ...
3
votes
1answer
76 views

Disallow a user to post in certain categories

I am writing a plugin that will disallow user to post in certain categories. I am trying to display an error message to the user when he tries to post in the restricted category and also want WP ...
3
votes
2answers
1k views

How to create notification on frontend using heartbeat api for multiple custom post types

How can I get correct action hook on publish_posts for multiple custom types ? I have a following problem, I can use this hook for posts or single custom post_type, but I don't know correct hook for ...
3
votes
1answer
2k views

Hooks for trashing, deleting, saving, restoring custom post type

I need some hooks especially for trashing and untrashing custom post types. However the hooks are not so clear in this case. For example, to run a function on trash, I can use add_action('...
3
votes
1answer
1k views

Is there a filter/action to add content to WP admin metaboxes?

I want to add an instruction into a custom term meta-box. Is there a hook to add this or is it easiest just to use JavaScript?
3
votes
2answers
38 views

Where to hook into post content?

Which hook or filter is used to edit the post content before the_content filter is applied to it. For instance, if I wanted to add Hello World, as the first text in every post.
3
votes
1answer
35 views

Change text of Description in Image Library

i would like to change or add text to the Media Library Overlay on the right side if you click on an image and can enter a description for the image. At the moment there stands "Description" or "...
3
votes
1answer
410 views

Call activation hook multiple times

I have a plugin that does some initialization stuff using register_activation_hook called from its __construct(). I've since extended my plugin to add functionality to it. For the sake of ...
3
votes
1answer
1k views

How do I handle multiple Submit buttons in plugin's option page?

I'm developing my first plugin for WordPress and I'm getting a grasp of the whole hook system. I'm now stuck on a (probably) small issue, that I could possibly circumvent, but I'm afraid of coming out ...
3
votes
2answers
1k views

Action hook 'wp' firing twice… why?

I noticed that when I hook into 'wp' it seems to be firing twice -- for example add_action('wp', 'just_testing'); function just_testing(){ global $post; error_log($post->ID); } returns ...
3
votes
3answers
2k views

How to Debug the 'save_post' Action?

Is it possible to validate PHP code? I have a Custom Post Type (Film) with Custom Meta Boxes. Everything is working fine, I can add new Films and details to the Custom Meta Boxes. My problem is ...
3
votes
1answer
3k views

Using action hooks inside of a shortcode

I am trying to create a modular plugin that includes action hooks for developers to add content before and after the main shortcode content. I'm having some trouble because anything I do in the ...
3
votes
1answer
685 views

Determining a Widget Instance and Sidebar Location?

When using the filter: add_filter('widget_display_callback', 'function_name'); function function_name($instance) { /* Some Code */ return $instance; } Is it possible to determine the sidebar ...
3
votes
1answer
984 views

Want to redirect if search query match exact title of any post

I am using WordPress 3.3.1 and new to this system. I want to redirect the search query to the post if query exactly matches post title of some post. I also want it to run before any search query ...
3
votes
1answer
50 views

Remove action from plugin on other plugin

I'm trying to remove two of the actions that adds a plugin (sportspress specifically). The actions of this plugins are: add_action('sportspress_before_single_player','...
3
votes
2answers
188 views

What hook is executed just after wp_query has been executed?

What hook is executed just after wp_query has been executed? before template is rendered? I want to change the page title but it depends on what has been queried. I have put it in template_redirect ...
3
votes
1answer
3k views

Which hooks is this? add_action('wp',

I have seen it here: wp_schedule_event Code snippet: add_action( 'wp', 'prefix_setup_schedule' ); I couldn't find this hook anywhere in documentation, how does it work?
3
votes
5answers
586 views

How do I make a theme “plugin-ready”?

How do I revise a theme so that I can publish my event hooks and anyone can build a plugin to add new functionality easily to my theme?
3
votes
2answers
619 views

Which hook should be used to validate custom form fields on the login form?

I've added a custom input field with login_form hook. So, I need to process the post data to validate. I've used the lostpassword_post for lostpassword_form and works great, but I cant find a hook to ...
3
votes
1answer
206 views

How should I intercept the main query and inject custom join / order by / group by criteria

I have a CPT that is a member of two separate taxonomies. On the taxonomy archive page for one of the taxonomies, I need to further group and sort on the second taxonomy like so: mysite.com/tax1/...
3
votes
1answer
665 views

The 'user_has_cap' hook seems to take two page loads to trigger

This question relates to another question I asked recently (http://wordpress.stackexchange.com/questions/29009/how-to-assign-specific-users-the-capability-to-edit-specific-pages-posts-cus/), the ...
3
votes
1answer
4k views

Overriding The Loop with filter or hook

I'm trying to replace the $wp_query object for a specific category, without having to deal with creating a new template and creating a new WP_Query object there. My aim is to change the data ...
3
votes
1answer
1k views

Any Hook Called When Post Becomes Published?

Posts may be published either immediately or in the future. Suppose a plug-in wants to do something at the moment when the post becomes published and visible on the blog (I don't mean when the post ...