Method by which plugins and themes extend core WordPress functionality.

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26
votes
6answers
4k views

Where Can I Find a List of WordPress Hooks?

Where can I find a list of all the WordPress hooks and over-ridable functions (pluggable, scriptable, etc)? Edit: Plugin is here: ...
1
vote
1answer
431 views

save_post hook not triggered in WP v3.6.1

I developed a plugin having a custom metabox that is using the save_post hook to store data. The plugin is 18 months old and is used by thousands of customers, so I'm pretty sure everything is good. ...
0
votes
1answer
14 views

Which method to use when deleting posts from the front-end

I am trying to enlist all my posts on the front-end along with delete and edit links (using the shortcode API). I am having difficulty with the delete links. To me the most obvious way to handle ...
1
vote
4answers
443 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 ( ...
1
vote
2answers
17 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, ...
0
votes
1answer
8 views

Add_menu_page() error message -> “You do not have sufficient permissions to access this page”

I'm currently building a website for a friend and have assigned him the user role of editor. I don't want to give him an administrator role in case he breaks the layout. Anyway, I am using ...
-1
votes
2answers
280 views

How to pass hook variable to function?

I have a function that has an add_action inside it that calls the user_register hook. I would like to be able to echo the variable $user_id from the user_register hook and the $_POST array as well. ...
0
votes
1answer
27 views

get_post_meta not working inside a function in functions.php but works outside

function notify_new_posts($post_id) { $keyval = get_post_meta( $post_id); $buyer_wdistance = get_post_meta( $post_id, 'cf_wdrive'); //$buyer_wdistance = $keyval['cf_wdrive'][0]; ...
0
votes
1answer
30 views

Replace admin header logo with an image

I want to replace the default WordPress admin bar logo to my custom logo which is a PNG file. I have tried a code it's not working. function custom_logo_admin_header() { echo ' <style ...
0
votes
1answer
317 views

How to use the password_reset hook to validate new password and display error

When a user resets their password via the link in the password reset email, I know I can use the password_reset hook to get the user object and the new password. I want to validate the new password to ...
1
vote
1answer
18 views

How to modify how the_content outputs a link to an internal page

I like the default add link dialog in the wordpress editor. IT allows for easy linking to internal pages. I need to modify the output of those internal links. Right now its outputting: <a ...
4
votes
3answers
492 views

Is there a hook to put stylesheet and/or JS inside iframes (thickbox or tinyMCE) in admin area

I'm working on my admin area theme and I wanted to make some modifications on the way the thickbox and tinyMCE looks. I could make most of the changes through adding custom stylesheets and JS to my ...
0
votes
1answer
31 views

Retrieving post ID from current page

I am following the tutorial here. Wordpress Ajax is a bit complicated but this tutorial helped me out a bit. The only question I have is, when I view any page, I want to be able to get the current ...
4
votes
1answer
885 views

Difference between do_action and add_action

This question might be wrong, I am not sure about it. Because I am not clear on this. I know add_action it is used to to hook our function to the specified function. For example ...
0
votes
1answer
22 views

$wp_query when new WP_Query

I'm trying something but I have an issue with WP_Query. I've an Hook on the_post in order to add some variation on the query. add_filter('the_posts', 'query_variation'); function ...
0
votes
1answer
273 views

Create action running on trashed_post hook to modify post_meta value

I have a custom post type that always do math operation to its post_meta and other custom post type post_meta. For example: post-type 1 = cpt_product_order post-type 1 post_meta = ...
2
votes
1answer
389 views

Gravity Forms field entries into wp_query loop

I have a simple function that filters the page content when form (ID 18) is submitted. It simply displays the entry of field (ID 13)... add_action("gform_after_submission_18", "set_post_content", 10, ...
2
votes
1answer
268 views

get_query_var() not working in pre_get_posts

I'm using the pre_get_posts hook to order the main query on all my custom post type / taxonomy pages using a custom meta value. As part of the logic, I am trying to determine which taxonomy is ...
2
votes
2answers
521 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?
2
votes
1answer
63 views

Security around save_post hook

There are a lot of examples using the save_post hook, that include adding and verifying a nonce, and checking the user has appropriate permissions before you continue. Is this necessary? When ...
0
votes
3answers
39 views

register_deactivation_hook argument -> pass arguments in the selected function

I've been looking for minutes how to pass arguments in the register_deactivation_hook as follow : register_deactivation_hook( __FILE__, array( new Cpt, 'delete_cpt') ) ); class Cpt { /** * ...
0
votes
1answer
264 views

Redirect back to origin page after using get_delete_post_link()

I need to implement frontend and backend redirection after delete specific post using get_delete_post_link(). Which hook i can use? Any advice would be appreciated. Something similar to : <?php ...
1
vote
2answers
219 views

Add site options UI in Multisite Sites > Infos page

I want to add meta fields for the sites in my network (such as a thumbnail and a category). I know how to do this using get/add/update_site_option, but I'm wondering where I could put the UI to manage ...
0
votes
1answer
267 views

Insert new user with form submit 'init' hook

I'm posting a form to insert a new user and hooking my function to 'init'. This code is in my mu-plugins folder. The user gets inserted fine, but the page is not loaded after wards. My form action ...
1
vote
1answer
19 views

Howto check version of another plugin and then add a submenu page to it

i'm writing a plugin which requires another plugin. So i have to check first if the other plugin exists in a correct version. If yes i want to add a submenu page to the plugin page but here my code ...
0
votes
2answers
32 views

How to hook into the quick edit action?

I found this solution to automatically assign parent terms when a child term is selected, which is working fine for the save_post hook: add_action('save_post', 'assign_parent_terms'); function ...
0
votes
1answer
40 views

Hook into $wpdb

Is there a way to hook into the WPDB instance ($wpdb)? What i basically want, is to execute a own function BEFORE the desired query get's executed. Is this possible? Additional question for comment ...
1
vote
1answer
230 views

Implement Hooks Using Array

I'm trying to implement some hooks into a theme, but rather than write out every hook with repetitive code I was wondering if I could use and array to declare the hooks instead. E.g. ordinarily i'd ...
0
votes
2answers
253 views

How to use the 'comments_number' filter?

I'm not sure how to use this filter. Could someone show me an example? I'm trying to change ('0', '1', '%') to ('0 Comments', '1 Comment', '% Comments'). I'm using this function to get the comments ...
0
votes
1answer
449 views

List posts based on First letter of Posts

I want add a Pagination [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] .......[Z] Easy Post Title - By Admin on 2013 post content....bla bla bla... Example Post - Another Test ...
0
votes
1answer
64 views

Ajax +wordpress onClick link redirect to new page and create html content

i have two pages in my wordpress plugin index.php charts.php in index.php i have some content and some link.. <a onclick="show_trend()" >Trend</a> while clicking this link ,i have ...
-1
votes
1answer
32 views

WooCommerce New customer email Hook? [closed]

I've created a sign up page for new customers to create an account. This is working fine but I would like to hook into WooCommerce customer_new_account inside ...
0
votes
0answers
13 views

Meta query not working with pre_get_posts

This works $q->set('meta_key', 'available-date_%_from'); $q->set('meta_value', '20140701'); This doesn't $q->set( 'meta_query', array( array( 'key' => 'available-date_%_from', ...
1
vote
1answer
636 views

How can I hook into creating a new post and execute wp_die(), before the post is inserted into the database?

Info about wp_die from codex: Kill WordPress execution and display HTML message with error message. A call to this function complements the die() PHP function. The difference is that HTML will be ...
6
votes
2answers
5k views

Is there a hook that runs after a user logs in?

I am writing a plugin that fetches some extended user info from a remote service and I need it to execute its function each time a user logs in. Is there a hook that gets fired after login that I can ...
0
votes
1answer
22 views

How to hook watchdog script for existence of a WP page?

I would like to have a watchdog script which checks the (un)availability of a certain DB entry, namely a certain WP page. The script itself is absolutely independent from WP and not difficult, but I ...
0
votes
1answer
378 views

using wp_footer hook in a plugin

I'm using the wp_footer hook into the plugin and it doesn't work, but when I copy the code to the "functions.php" file of the active theme it does work, what is the possible problem in this situation ...
2
votes
2answers
428 views

Run javascript code after wp_login hook?

After using the wp_login hook, is it possible to add a snippet of javascript code to the page seen immediately after the login in wordpress? I want to use this top implement a notification system ...
0
votes
1answer
48 views

Removing action from template class

I'd like to replace an action in a theme with my own version in a child. In this case, the theme hooks into wp_head to add it's own links. My own functions.php resides in the child theme and looks ...
0
votes
0answers
10 views

check_admin_referer always false when I use on add_action('load-'* hook

I have try to add hook on load my plugin page. But every time i save my config, it always return "Are you sure want to ..." message. Is there something i missed? Here's my code: <?php class ...
0
votes
0answers
18 views

Using 'add_attachment' to add taxonomy term on upload completion?

function amend_gametitle_upload( $game_title ) { global $post; if ( isset( $_REQUEST['post_id'] ) ) { $post_id = absint( $_REQUEST['post_id'] ); $post_obj = get_post( ...
3
votes
2answers
136 views

Adding function directly vs using hook in function.php

We can use functions like register_nav_menu() directly in function.php and it works and we can also use a function to put register_nav_menu() inside of it and attach that function using a hook like ...
0
votes
1answer
24 views

Get new (not old) post inside transition_post_status hook

Following up the ticket 'transition_post_status' is executed before 'save_post', I'm still struggling how to access the new $post (after it has been saved) inside a transition_post_status hook. Right ...
0
votes
0answers
24 views

Checking if some condition is matched before inserting post into database

Is there a way to check if some requirements are matched before adding new instance of custom post type to database? Like custom policies for adding new posts etc? What I want to do is to build two ...
1
vote
1answer
209 views

How and why can a hook call itself without causing recursion?

When looking in WP hooks' code, I often see hooks that call themselves. For example, this snippet from image_downsize(): function image_downsize($id, $size = 'medium') { if ( ...
1
vote
1answer
68 views

Move excerpt meta box to above content editor

I found a WordPress hook called "edit_form_after_title" to add a text box after the title. How can I use this hook to display the excerpt after the title while creating a new post?
0
votes
0answers
15 views

Ask for template when adding a new page

I would ask the admin which template they would like to user when they click on "Add New" Page. Is this possible? I think I have seen something similar before where it ask you how many columns you ...
0
votes
1answer
30 views

Dynamically Generate Functions and Hooks

I'm trying to find if it's possible to dynamically generate functions and hooks. All functions do the same thing, and all hooks are essentially the same. Here's an example of a hook/function combo: ...
0
votes
0answers
24 views

get_plugins() doesn't work after plugins_loaded

Any idea why the following code function my_plugin_load() { get_plugins(); } add_action( 'plugins_loaded', 'my_plugin_load' ); Throws this error? Fatal error: Call to undefined function ...
0
votes
1answer
16 views

Hook on creating a menu entry?

I need to run some code after a new item has been inserted into a WordPress nav menu. Is there any hook on menu modification or something similar?