Method by which plugins and themes extend core WordPress functionality.

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11
votes
1answer
7k views

how to limit search to post titles?

Is there a way to limit search to post titles? I know I can modify query.php core file but there must be a way to do it with hooks right? Thanks in advance!
1
vote
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 ...
2
votes
2answers
4k views

Filter the URL of next_posts_link & previous_posts_link

I am working with the qTranslate plugin to create a multi-lingual website. The plugin does a great job of translation except for on the next_posts_link & previous_posts_link template tags. When ...
5
votes
5answers
772 views

Implementing advanced add_* function wrappers

add_action() and add_filter() are major functions. However in some scenarios add one more function and hook it somewhere approach gets bulky and inconvenient. I had determined for myself several use ...
1
vote
3answers
303 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 ...
0
votes
2answers
808 views

Categories widget show empty?

Is there a way I can display all categories in the categories widget that comes with wordpress. I do not want to have to edit the core files and I want to stay away from rewriting the widget, but if ...
2
votes
1answer
2k views

What is the 'admin_action_' . $_REQUEST['action'] hook used for?

There's an action hook triggered in admin.php called 'admin_action_'.$_REQUEST['action']. Unfortunately, it's a bit useless for plugins as it's triggered at the very end of admin.php, after ...
1
vote
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 !
2
votes
1answer
994 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 ...
0
votes
1answer
612 views

Does admin_print_scripts-$hook_suffix work for nested paths to individual files?

Can the hook admin_print_scripts-$hook_suffix be used for a hook which has been created like $hookname = get_plugin_page_hookname("my-quiz/lib/admin/$code_page", '' );? .. where $code_page is ...
0
votes
1answer
266 views

How to add or delete default value theme options while activate and deactivate theme

I want to add & reset default value for my theme options while activate and deactivate a theme More clearly something like this if(theme active) add_option(); // add new option to the theme ...
1
vote
3answers
541 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 ...
1
vote
2answers
320 views

How to get all of the activate_plugin action parameters?

I am trying to hook into activate_plugin. I know that activate_plugin has 1 required param and 2 optional ones. I am trying to acquire all 3. Here's my setup: // create plugin settings menu ...
4
votes
3answers
7k views

add_action hook for completely new post?

publish_post Runs when a post is published, or if it is edited and its status is "published". Action function arguments: post ID. -Plugin API Documentation I've added the publish_post ...
1
vote
2answers
974 views

From what hook on is it possible to conditionally add actions?

I tried to have a siderbar registered at the "init" hook based on a variable from the theme options array indicating whether the sidebar should be used in the design. Now it appears that that the ...
0
votes
2answers
217 views

It's okay if I do not write add_action()

I downloaded various themes on net and I found on functions.php they write something like this Example to remove inline comment style. function demo_remove_recent_comments_style() { add_filter( ...
2
votes
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
1answer
447 views

Proper indentation of code generated inside hooks

I really like having my code all properly indented and all, but all the code generated by wordpress, like the one that appears on the header when we use wp_head(), loses all the indentation. I think ...
1
vote
1answer
485 views

Event Calendar using insert_post_data after save_post and insert_post after post_transition draft_to_schedule

OK, I'm taking on the dreaded task of developing an event calendar for my site and have gotten a bit stuck. I'm open to any and all ideas but here's what I'm doing and what I'd like to do. I'm ...
1
vote
1answer
489 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 ...
9
votes
5answers
8k views

Theme Activate Hook

I would like to write a function to email me the URL of the website when my theme is activated. What is the hook initiated when the theme is activated?
0
votes
1answer
393 views

Which are the hooks run before/after when a category's deletion?

What are the actions that a plugin can hook on to for processing when the user deletes a category?
2
votes
1answer
2k views

Explanation of the “posts_join” and “posts_fields” filter hooks?

I'm new to the "posts_" filter hooks and wanted to know a few things from those in the know: In this question, someone posted an answer using posts_join that took a second parameter of $query: ...
1
vote
3answers
10k 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 ...
0
votes
2answers
1k views

Are there action hooks for comments?

This is for a personal-use plugin I'm trying to make. I want to submit a comment from site A to my blog (sort of like sending trackbacks/pingbacks but a full comment). For instance, on site A I have ...
1
vote
3answers
455 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 ...
2
votes
1answer
4k 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', ...
6
votes
4answers
7k views

Auto-retrieve YouTube Image for Thumbnail?

I have a custom post type that accepts a YouTube embed HTML snippet, title, and a featured image. Currently, I'm going and finding an image for the featured image, but ideally I would be able to ...
0
votes
1answer
519 views

INSERT in table row fatal error

I just discovered this wonderful message board :-) Hopefully someone can help me with a Wordpress issue I can't figure out.. I added a hook to my plugin file to insert the post id of the immediate ...
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
380 views

Schedule cron event from widget

Can I use wp_schedule_event() to set up a cron job from within a widget? I tried, but I can't make it work, The problem seems to be the $hook parameter. The function I'm trying to hook is located ...
2
votes
2answers
7k views

Use latest jQuery in WordPress (admin interface)

I want to use the latest jQuery (and jQuery UI) versions on my admin interface (editing a specific post type that I created). I tried this: // jQuery 1.x wp_register_script('jquery1x', ...
12
votes
3answers
2k views

get_template_part vs action hooks in themes

It seems to me both of these afford the opportunity for the end user to modify a theme without actually editing the themes files (via child themes). My question is, is one method preferred over the ...
9
votes
3answers
4k views

Are there any hooks that alter the 404 logic?

Provided you have a 404 page defined in your theme, Wordpress will display a 404 page if "tag" is defined in $wp_query->query_vars, and there are no posts matching that tag. I'm writing a plugin that ...
1
vote
1answer
1k views

How to check if certain plugin exists and in expected version

I've created plugin that goes to wordpress plugin repositories. Now, I need to create another plugin (sub plugin or child plugin you may call) that require this certain plugin to be already installed ...
1
vote
1answer
257 views

Executing Arbitrary Code at a Specific URL without Creating a Post or Page?

I am trying to figure out which hooks I can tie into in order to read the incoming URL prior to the query actually being run. A quick look tells me maybe wp_loaded or posts_selection would be good ...
3
votes
1answer
989 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 ...
0
votes
1answer
520 views

Hook to See if Comment got a Reply?

Okay I know the title is pretty vague but I didn't know how to articulate it. Basically, I want a plugin that sends email notifications to users who opted-in only if they specifically got replied to. ...
6
votes
3answers
5k views

Calling a Function After New Post Creation for a WordPress Custom Post Type?

Assume I created a new post type 'product'. Is there a way to perform a function (user created) when this new 'product' post has been created?
6
votes
3answers
1k views

Making Custom Fields Standard in the Admin UI

I've added a few different custom_post_types to my Wordpress 3 installation. They are all a bit different from eachother, and should store unique information in custom_fields. But while one may store ...
0
votes
2answers
303 views

Using Custom Fields to Trigger Specific Actions on Saving a Post?

Can custom fields be used to determine specific actions upon saving a post to the database? Which action(s) make this possible, since adding post medata seems to always occur after saving a post and ...
2
votes
2answers
427 views

Is This A Correct Example Usage Of current_filter()?

Is this a good example of usage of current_filter()? <?php add_filter("_my_filter", "common_function"); add_filter("_another_filter", "common_function"); function common_function(){ ...
25
votes
2answers
8k views

Difference Between Filter and Action Hooks?

I have been looking at the plugin API a bit more in depth recently and I was wondering what real differences there were between action and filter hooks. They both are events that receive data as a ...
3
votes
5answers
7k views

Adding onload to body

I'm currently trying to develop a plugin that will embed a Google Earth Tour into a WP post / page via a shortcode. The issue I am running into is that for the tour to load, I have to add an ...
2
votes
2answers
2k views

Why isn't is_home() working correctly?

I put a if(is_home()) bit in my theme's functions.php and it doesn't seem to work. The function containing this bit is called on init so is_home should work already.
1
vote
3answers
529 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) { ...
1
vote
2answers
89 views

Modifying the comments section through a plugin regardless of theme

I need to be able to add some data (text/images) to each comment in the comments section through a plugin. What I'm trying to do is actually very similar to the way the stack exchange sites have their ...
10
votes
4answers
921 views

Hooking in to plugins

I'm working on a plugin that would ideally be able to do things when a user does something through a different plugin. I can add custom hooks in those plugins but obviously this wouldn't work well ...
30
votes
9answers
6k 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 listed here.
2
votes
3answers
164 views

How and where can we request new WordPress hooks to be added?

I use the great Changelogger plugin, which adds plugin version history to the plugins page when there is an update. Although I would like it to, it doesn't work from the updates page where you can ...