Method by which plugins and themes extend core WordPress functionality.

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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
2k 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 ...
0
votes
2answers
936 views

modify URL with mod_rewrite or hook

i'm trying to achieve the following: user enters this URL into browser http://mydomain.com/boston/categoryname/postname/ i then want to get the first "folder" and check whether or not it's ...
13
votes
2answers
24k views

WordPress hooks/filters insert before content or after title

trying to insert content before the post content in my functions.php - I know how to use the regular wp hooks, but unsure how to insert into other areas. Tried this, but it kills content on any other ...
2
votes
1answer
301 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
2answers
2k 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.
0
votes
1answer
668 views

Filter dashboard custom post listing by user

Did some research, but I was unable to implement it after all. I have a custom post type accessible only by a new role. I want to filter the post type listing so that each user should see only his ...
1
vote
2answers
4k 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 ...
0
votes
1answer
239 views

Replacing a placeholder term with a session variable value in taxonomy filter

I have in my themes some code which will set a session variable. For the sake of example, it's a geolocation routine which will set to either USA, UK or ROW, resulting in: $_SESSION['region'] = ...
1
vote
2answers
168 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', ...
2
votes
2answers
750 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 ...
12
votes
6answers
3k views

How to include code only on specific pages?

I'm learning about plugins and shortcodes. I noticed that when I activate my plugin its code gets loaded on all of my pages-- even pages that don't have my shortcode. (I don't mean content vs. admin ...
1
vote
1answer
1k views

Wordpress Delete hook with wp_delete_post function?

I have this action/hook: add_action( 'before_delete_post', 'my_delete_function' ); function my_delete_function($post_id) { global $wpdb; $achievement = get_the_category($post_id); $h = ...
0
votes
2answers
716 views

Modify Notification Message When Profile Updated

I have added new fields on the user profile page. I want to display a message that says: "It's good ... or not" I couldn't find a hook in the WordPress codex. I don't want to use a plugin only my ...
0
votes
1answer
385 views

Modify posts listing at back end

I want to modify posts listing at back end? Say, for a particular user, with role author, O want to list only few posts at posts listing. How can I do this?
0
votes
1answer
412 views

How to add a filter to the get_body_class function?

I see it is possible to use add_filter with the body_class function, but I'm needing to add one to the get_body_class function. How can I add a filter to a function that is not included in the list ...
0
votes
1answer
5k views

Wrap all post images inside a div element

I searched for all kind of solution but i really could find one that did what i was looking for, what i simple want done is wrapping all images inside a div element, old post aswell as new posts. All ...
3
votes
3answers
11k 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 ...
2
votes
1answer
149 views

Showing Notifications While Activating Plugin

I want to give errors like this, while activating my plugin. Which hooks should i use ? Can you share simple examples ? In shortly,when user activate my plugin, is a directory's CHMOD isn't 777 , ...
0
votes
1answer
393 views

How can I override one post and make it display content for another post?

I have two pages on my Wordpress site: mysite.com/?p=100 mysite.com/?p=200 I think I should be able to hook into Wordpress' actions somewhere and re-query the post, so that content for ...
4
votes
2answers
1k views

How can I log a user out of Wordpress before the page loads?

I would am using the code below so that on my wordpress site if ?logout is appended to the end of the URL the user will be logged out. This works well - if the user visits a page such as ...
0
votes
1answer
114 views

Change status of page after an event (Looking for best practice advice)

I'm looking for a best practice/ideas for modifying the status/data of a page after an event. Here's an example of what I'm trying to accomplish - This WordPress site would allow users to sponsor ...
0
votes
4answers
585 views

How to fix my old theme so it loads jQuery properly

I have an older theme that is loading jQuery 'manually', and this conflicts with all plugins that are trying to use jQuery. The following lines are included in the theme header: <script ...
5
votes
1answer
7k views

How can I see all the actions attached to an “add_action” hook?

I'm working with the admin bar and trying to debug some of the menus and their priorities. I know several callbacks get bound to actions, such as this one: add_action( 'admin_bar_menu', ...
1
vote
1answer
3k views

Changing “Lost Password Email Link” to custom password reset page

On the Wordpress site I am working on, subscribers will not be allowed to see anything in the backend at all. Because of that I am creating a custom pages for the Wordpress login page that subscribers ...
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?
1
vote
1answer
1k views

Is it possible to Hook/Filters Attachment Creation?

Is it possible to hook or filter the attachment creation process? More specifically is it possible to hook into the attachment creation so that I may parse the attachment’s filename, populate the ...
2
votes
2answers
3k views

When calling wp_title(), do you have to create some kind of “title.php” file?

... or does wp_title() already handle the various contexts in your blog? This could clarify for me how I can achieve a reusable index.php file without having all the conditional statements inside it ...
3
votes
1answer
656 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 ...
0
votes
1answer
1k views

Hook for page Request?

I want to run a function that looks at the current url params of the page that is requested and sets a cookie based on those params. So, I guess I'm looking for: The Wordpress Hook that allows me ...
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 ...
1
vote
1answer
414 views

Need to check is_archive during init

I need to check if a page is an archive or not, before my plugin does some URI manipulations. These manipulations only work before wp but if I perform them first and then check is_archive, the check ...
3
votes
1answer
5k 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: ...
0
votes
1answer
2k views

wp_insert_post hook for a wordpress plugin

I'm trying to make a wordpress plugin to auto-translate posts just before it's inserted, it's for a specific need where I want to write in a language, post in a different one, so far, I'm not able to ...
-2
votes
3answers
188 views

Apply function on all action hooks?

Is there an easy way to apply a function on all action hooks? I want to apply esc_attr() to every action hook (in a way that would work from functions.php or a plugin). I figure I would need ...
7
votes
5answers
7k views

Is there a way to set default custom fields when creating a post?

When I'm creating a new post, just after clicking "Add New", when the post editor shows, instead of having to use the dropdown and choose a custom field to use, I'd like to have some default custom ...
0
votes
1answer
3k views

How to automatically activate users after registration without activation email?

I want to auto-login my users after signup without an activation email requirement (I'm not concerned about spammers). How might I go about doing this? Thanks!
0
votes
1answer
485 views

Creating a plugin that will display text on every page

I know there is going to be an easy way to do this but I just can't seem to find the best practice for the following; I have a plugin which when complete should generate HTML on every page, I want it ...
0
votes
1answer
377 views

Filter for replacing the WP_query object for a given category

I'm looking for a action/filter to replace replace a category archive page with the contents of a page. I'm thinking of testing the category ID, and replacing the WP_Query object with a new one ...
2
votes
2answers
770 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 ...
12
votes
2answers
12k 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 ...
1
vote
1answer
512 views

Pass variable to hook. Its possible?

I have this hook created to retrieve user password when he register or update his pass. I dont want my client to touch wordpress core so i was planning to use a hook in wp-includes/user.php All this ...
2
votes
2answers
2k views

Get password when user registers and save it sha1 into database

im working on a website where the users can connect with iphone to some functions of it by using a sha1 encrypted password. In other words the plain password of wordpress encrypted in sha1. In the ...
1
vote
2answers
90 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() || ...
0
votes
1answer
5k views

Help me to understand wp_header() and wp_footer() functions

hi everyone please help me to understand the hook functions wp_header() and wp_footer() What does it mean hook functions and what to do
2
votes
1answer
2k 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.
6
votes
3answers
15k views

Is there a way to send HTML formatted emails with Wordpress' wp_mail function?

Is there an action_hook or something similar that could help me achieve this? I tried adding markup in a PHP string variable and just fired off an email with the wp_mail function like so: $email_to ...
0
votes
1answer
89 views

File names are being overridden when uploading new media

I want to hook into the media upload function and prefix file names with a timestamp. We're uploading a lot of stuff within a month, so we can't rely on the directory structure, and we're also dealing ...
1
vote
2answers
546 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 ...
0
votes
1answer
349 views

How to set Media Box form elements default value?

I am developing a plugin to customize wordpress administration. Creating / Editing an article, when i user insert an image from media library or uploading it, i want to clear the image title, as ...