Method by which plugins and themes extend core WordPress functionality.

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2
votes
1answer
2k views

hooks & filters and variables

I was updating the codex page example for action hooks, while playing around to get some reuseable functions done (originally for some Q over here @WA). But then i ran into a problem i wasn't aware of ...
2
votes
1answer
45 views

Send an email when custom post type category is changed

This is the first time I've attempted to write an action hook. My CPT has 4 categories. I'm trying to make WP automatically sends an email notification when the category is changed. By change I ...
2
votes
1answer
125 views

Am I using the right hook for removing quicktags on the admin TinyMCE?

This is more of an excercise than something for a client. Anyway, I'm trying to disable the quicktags when you're on the dashboard and you click on Comments > Edit Comment. On that screen, there's a ...
2
votes
1answer
125 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 ...
2
votes
2answers
108 views

What's the earliest point I can get the queried object ID?

I'm writing a supplement plugin to Wordpress Mobile Pack because I would like to use the default theme on pages that are assigned a certain page template. My plugin will only deal with the mobile ...
2
votes
3answers
339 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 : ...
2
votes
1answer
801 views

Admin Post Update Redirection to Posts Screen

Is there a hook I can use that when a post is created or updated it goes back to the list/table page of all the posts. If it is also possible to target a post type as well that would be cracking. ...
2
votes
2answers
285 views

Can user_register output the password?

I'm trying to output the password of a newly created user in plain text using the user_register hook as explained in this answer. However, upon doing a var_dump of $_POST, I don't see any password ...
2
votes
2answers
1k views

How to modify post content before writing to database?

Hi~ I'm back again and I'm trying to add another function to the script I was working on a plugin that notify my friends of new post that mentions(@) them. Now I want to change the plain text of my ...
2
votes
2answers
176 views

How to check what kind of saving it is?

I use save_post hook, and I have to know inside this hook function, whether it is a publishing ( draft to publish ) or is it an updating, like publish to publish or draft to draft. Is there a way to ...
2
votes
1answer
60 views

comment_email hook doesn't seem to work for comment editor field

I am building a plugin that allows users to PPK encrypt their users' IP/email data. Thus, IP/email data is set to dummy values in the comments table and encrypted values are stored in corresponding ...
2
votes
1answer
288 views

wp_ajax_[service] returning 0

I have a few Ajax services that I'm setting up. All of them require being logged in so I've attached hooks into the "wp_ajax_[$service]". The problem is when I call these services I just get a "0" ...
2
votes
2answers
324 views

Load different template file when condition met?

If I visit a page on my WordPress site, WP goes and determines what template file it should use based on the template hierarchy. If I'm doing some logic checking in the hook init and say my ...
2
votes
1answer
157 views

deactivated_plugin hook: get the name of the plugin

I would like that every time any plugin previously activated, a function from my plugin be called, returning (at least) the name of the plugin, or something that allows to identify it (file name?). I ...
2
votes
1answer
282 views

Change WordPress RSS link with filter?

In my theme i use add_theme_support( 'automatic-feed-links' ); to enable the rss links. But i want to create an option to use Feedburner for the main rss feed, my problem is that i don't know how i ...
2
votes
2answers
1k views

How to get post ID in post_updated action hook?

I want to execute a function, myfunction() [hypothetically named], whenever a page is updated in the admin. The function doesn't do anything to the content that is saved—it just runs an unrelated task ...
2
votes
1answer
926 views

How to change title attribute returned by comments_popup_link()?

I can change label of comments by altering Comment(s) from parameter of following function: comments_popup_link('No Comments;', '1 Comment;', '% Comments;'); But, seems that title attribute is ...
2
votes
1answer
3k views

add_action('wp_ajax_[action name]', myfunction) problem

I'm trying to integrate ajax in wordpress using the wp codex guidelines. In the PHP I added: wp_enqueue_script ( 'my_ajax', ADMIN_URL . 'js/ajax.js','jquery','1.0.0' ); wp_localize_script( 'my_ajax', ...
2
votes
1answer
3k views

Best Practices for Creating and Handling Forms with Plugins?

I'm writing a plugin that creates and handles a simple form. This has been my approach sofar, but it's turned out to have some major flaws: 1) On plugin activation, create a blank page for the form ...
2
votes
1answer
103 views

How to properly test a method that is called by an action hook

The constructor in my class adds an action to the 'init' action hook: class My_Custom_Post_Type { function __construct( $type ) { $this->type = $type; add_action( 'init', ...
2
votes
1answer
733 views

Delete option value from array using update_option()

I have a user profile field which subscribes the user to forum posts by email. This adds the user's email address to an array in wp-options. Naturally I want the user to be able to unsubscribe, in ...
2
votes
1answer
321 views

Is there a hook to process a backbone restful PUT request inside wordpress?

I play around with Backbone.js (Great !) and want to synchronize my model data with the wordpress ajax api (3.6.1) on the server-side. Adapted to this ...
2
votes
1answer
495 views

Display custom list of tags in post/page editor with hooks

I used the information posted on this blog post to display specific tags when editing a post. The editors on my site wanted the ability to display pre-specified tags instead of the most popular ones. ...
2
votes
2answers
1k views

Issue with get_theme_mod returning a blank value instead of the saved value

I have what seems to be a rather troubling issue with the get_theme_mod function in the latest version of Wordpress. Only on particular servers (of which meet all Wordpress requirements) the function ...
2
votes
1answer
950 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 ...
2
votes
1answer
155 views

Adding markup to column text in “Edit Pages” admin page

I was wondering if there is a way to hook into the column titles in the "All Posts" admin page to modify them. For instance, I would like to change "Post" to "<strong>Headline</strong>". ...
2
votes
2answers
1k views

Is it possible to enqueue a script from a widget method (of extended WP_Widget object)?

I am creating a widget plugin that a user could potentially use multiple iterations of the widget multiple times on a single widget-area / multiple widget-areas on a single page. Because of its ...
2
votes
2answers
2k views

How can I remove css from a child theme?

I am using the theme twentyten as a parent theme for my child theme. I have other stylesheets I want to use and so I'm trying to figure out how to wp_deregister_style for the style.css sheet that is ...
2
votes
2answers
521 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 ...
2
votes
2answers
708 views

Display info from custom fields in all images' HTML

Okay, I've been working on this all day and can't find the solution anywhere. I've created a custom field within the image upload screen (info first found here). The field stores the name of a ...
2
votes
1answer
387 views

When to call `add_rewrite_rule` for safety

I am starting to run into situations on projects where I am combining multiple plugins which all use add_rewrite_rule and flush_rewrite_rules at different points. As we all know, calling ...
2
votes
2answers
619 views

specify meta_key / meta_value condition for prev_post_link and next_post_link

I've got a custom post type (CPT) called event. Every event has got an associated meta_key called event_date. I want to make sure that events with empty event_date won't appear in my list of all ...
2
votes
1answer
1k 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
2k views

Custom Blog Post Listing in Genesis Sample Child Theme

I want to add several images and divs and also customize the look of my Blog post listing... But i can't find the way to do it. Here's the Blog Template code <?php /* WARNING: This file is ...
2
votes
1answer
864 views

Empty Super Cache programmatically (with ACF action) [closed]

I regularly use Advanced Custom Fields to create awesome backend interfaces for my clients (as I'm sure a lot of us do…). ACF includes an Options add-on that creates one or multiple global options ...
2
votes
1answer
647 views

Gravity Forms field entries into wp_query loop [closed]

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
0answers
160 views

How to add custom button to new media upload interface [duplicate]

I am developing a plugin and i want to add my own button to the wordpress media upload interface (WP version 3.5). Right next to the standard 'insert into page' button, i want my button to be there, ...
2
votes
1answer
166 views

How to save the values of checkbox to the register setting?

<?php function default_menu() { <form action="options.php" method="post"> <?php settings_fields( 'sample_check' );?> <input type="checkbox" name="sample" value="nofollow"/> ...
2
votes
2answers
147 views

Placement of Code in Plugin for hooking `save_post`

I ran into a strange Problem today developing a new Plugin. I set it up as usual, creating the f711-roomprice folder in the Plugindirectory, and creating the f711-roomprice.php as well as an inc ...
2
votes
2answers
199 views

add_action on inherit post status

I'm trying to use the add_action() hook to run a custom function, but am struggling with the post status. I originally tried using: add_action('pending_to_publish_portfolio', 'my_function'); ...
2
votes
1answer
129 views

Hook to edit an column on comments screen?

At the moment I'm doing add_filter("manage_edit-comments_columns", function($columns) { unset($columns["author"]); $columns_one = array_slice($columns,0,1); $columns_two = ...
2
votes
1answer
250 views

publish_post plugin hook doesn't always pass $post->post_content

I've written a simple plugin that grabs the contents of a post, as the post is published, and sends them to an external site for archiving. This generally works but when dealing with posts that ...
2
votes
1answer
565 views

Post thumbnail relative link and HTML modify

I want to remove the website url from all the_post_thumbnail() so they become relative and remove/add attributes from the output. So far I got the following code added to functions.php of the theme, ...
2
votes
1answer
228 views

Problem using role_has_cap hook

I'm trying to filter a capability check in order to work around the lack of filters to customize the user edit page in the admin area. But I can't seem to add filters to a hook, and I'm sure I'm ...
2
votes
1answer
235 views

How can I customize the upload error message in Wordpress?

After following the guide for How can I prevent uploading bmp image? to remove bmp (and in my case tiff images) from being uploaded, I tested and it is working, but noticed users are now getting the ...
2
votes
1answer
63 views

Hooks for Links Box [duplicate]

Possible Duplicate: Getting archive pages in WP's AJAX internal link finder? Are there any hooks for the new internal links box that was created in WP 3.1? I'm trying to modify it in my ...
2
votes
3answers
1k views

Is there a hook for user activation (after they click the email confirm)?

Is there a hook for user activation (after they click the email confirm)? I am creating a plugin to automatically add them to my email software, but I want them to have to confirm their email first.
1
vote
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 ...
1
vote
3answers
452 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 ...
1
vote
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 ...