A type of hook that provides a way for content to be overridden programatically

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7
votes
1answer
980 views

what is __return_false in filters

I was thinking of removing/hiding admin-bar from my wordpress (3.1.1) installation. I visited following link: http://codex.wordpress.org/Plugin_API/Filter_Reference/show_admin_bar I was surprised ...
0
votes
0answers
11 views

How to edit the response header of a post/page?

I am rendering a post/page differently. Instead of displaying an HTML document, I am making the page render a javascript code. The default content type of a wordpress post/page is text/html, is there ...
0
votes
1answer
359 views

function triggered by “manage_users_custom_column” filter not working

I am trying to add a custom column un users.php but it stays empty. I have successfully added a column to the users admin page with this code in my theme's functions.php file: function ...
0
votes
1answer
10 views

Remove posts_orderby filter then add it back in

I'm using remove_all_filters('posts_orderby'); to remove the order for a query. For a query further down the page I need the filter back. How do I add it back in?
0
votes
1answer
16 views

WP Dashboard -> Posts-> Filter by Category -> Form Method Change : Which Hook

We have a contemporary 4.2.2 WP install running with a handful of various plugins. We have been facing an issue where when a provisioned user is in the "POSTS" dashboard view, the ability to filter ...
0
votes
1answer
12 views

Filter wp_dropdown_categories Per Post Type

I'm using wp_dropdown_categories to add a categories filter to the media library. It works fine, except it displays all the categories that are assigned to posts, but I would like it to only display ...
0
votes
1answer
28 views

How do I override the_excerpt so that it will display full content?

I am creating a plugin. Many themes display excerpt such as when is_search() is 1. I want WordPress to display full content no matter what. How would I do so? Should I use add_filter ...
0
votes
2answers
465 views

Create subpage - filter parent pages list

I have a website here with a lot of content and with the content where is necessary to create pages in hierarchy. But it is uncomfortable to go through the dropdown in the administration with a lot of ...
0
votes
0answers
31 views

image_send_to_editor filter - Unwanted paragraphs and line breaks

I'm using image_send_to_editor to filter the output the images that are inserted to my posts. The filter works perfect except for when I'm updating/saving the post. A new paragraph with a line break ...
0
votes
1answer
17 views

what is the point of telling add_filter how many parameters you want passed to the function?

In wp-includes/plugin.php (apply_filters) there's this: foreach( (array) current($wp_filter[$tag]) as $the_ ) if ( !is_null($the_['function']) ){ $args[1] = $value; ...
2
votes
3answers
3k views

Need help building a filter to edit the output of “image_send_to_editor”

What I'm trying to do is edit the output of image_send_to_editor so that i can make the anchor that wraps around the image have a specific class & rel. I plan to basically make each image that ...
1
vote
1answer
508 views

Using add_filter() in Widgets

Just have a query reference the add_filter() function. Can you use this function inside a WordPress widget class. Example I have a widget with dynamic created code that I want to pass to another ...
1
vote
1answer
815 views

Only let plugin add actions to wp_head & wp_footer on single posts

I'm using a a plugin (Comments Evolved) on a recently built site. The issue I'm having is that this plugin globally enqueueing and adding actions to the head and footer of all pages. I'd like to ...
1
vote
0answers
23 views

Slow WP_Query with 'OR' on meta_query

Essentially, I'm trying to query using a filter for the args being fed into WP_Query() like so: public function filter_wp_query( $args, $template_slug ) { $args['post_type'] = ...
1
vote
1answer
327 views

list category posts under its item in menu

When adding category to Menu, I need it to list all the item that belong to that category in separate UL automatically. like this http://i.stack.imgur.com/ulOOS.jpg Of course I can do that manually, ...
0
votes
0answers
15 views

add_filter post_gallery and do_shortcode

I'm attempting to swap out short codes on the fly but having an issue that I'm hoping someone can help with. Basically I've added a "Gallery Type" option to the wp.media library and am using the ...
1
vote
2answers
32 views

What effect does the_content filter have on performance?

This is general question but lets say I have a function and on a specific page I want to display a table. The function only applies to one page on my site but every post/page will run this function ...
0
votes
1answer
19 views

post_results filter confused by pagination in sidebar and main section

I have a post_results filter that I want to use to manipulate the results returned from a the query. Let's say that it's supposed to put stars around the first post on the first page, second post on ...
0
votes
2answers
32 views

Add filter unless it is being called under specific function

I want to add a filter ... but not if it that filter is called by a specific function. Here's a simplified example: <?php add_filter( 'get_the_excerpt', 'wp_trim_excerpt' ); function ...
1
vote
2answers
424 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
9 views

posts_results filter function memory errors

My posts_results filter is causing memory errors and I can't figure out why. Here's the full snippet: /*-----------------------------------------------------------------------------------*/ /* ...
1
vote
2answers
1k views

How to replace the_post_thumbnail template tag and show the first inside the post image instead

I want WordPress to return the first post image or a default image if no featured image has been set. My theme uses the_post_thumbnail many times, so I don't want to go through and change all ...
0
votes
0answers
6 views

Filtering Index By Categories

Goal: At the top of my index page, I would like to have a list of the categories of posts - for example: "All", "Apples", "Oranges", "Bananas", so that when I click on a category (Oranges) then the ...
27
votes
2answers
7k views

Passing a parameter to filter and action functions

Is a way to pass my own parameters to the function in add_filter or add_action. For example take a look in the following code: function my_content($content, $my_param) { do something... using ...
0
votes
2answers
126 views

Add Fields with Sub-Fields to WP Job Manager

I have been working on a custom add-on for WP Job Manager where I modify, via filters, the content displayed. I've used many of the tutorials on www.wpjobmanager.com/documentation, but I'm stuck on ...
1
vote
4answers
1k views

Make parent categories not selectable

I'd like that my categories having child-categories don't be selectable on the post article page. What I want to do is to remove the checkbox before their label. I've looked the filter documentation ...
1
vote
2answers
1k views

Call to undefined function error after adding add_filter to wp-config

I am getting Fatal error: Call to undefined function add_filter() in example.com/wp-config.php on line 20 after adding add_filter( 'auto_update_plugin', '__return_true' ); to wp-config.php My ...
0
votes
1answer
22 views

pre_get_posts to hide everywhere posts from “Archive” category

I want to hide some posts from feeds, searches and nearly everything, apart from URL to this post. To have so called archive. Private post is also not an option because unlogged users with URL should ...
0
votes
1answer
329 views

Search a title word through query_posts (not the exact match)

We're working on a database with personal data from different sportsmen such as name, height, weight, etc. We've managed to build a detailed filter through query_posts. Every filter field is working ...
0
votes
1answer
19 views

How to filter sql only for a specific post type

I have been trying to join a custom table with a regular wordpress query, but only under a specific condition (a specific post type). I have a single-event.php template that runs the main query, and ...
0
votes
2answers
28 views

Shorten the title length

So I'm using this filter in order to shorten the title: function the_titlesmall($before = '', $after = '', $echo = true, $length = false) { $title = get_the_title(); if ( $length && ...
2
votes
1answer
29 views

How can I display image metadata?

I'm trying to add a filter to the_content that will find all images in the post and append the custom attachment metadata credit to it. Here's the functions I've have: Adds the Credit field to ...
0
votes
1answer
28 views

Get results from the main wp_query

I would like to alter the main wp_query and then email the results as PDF or HTML email. I have managed to filter wp_query using custom filters and some code similar to this inside my plugins ...
0
votes
2answers
12 views

How do I add a class to all sidebars to let a Google Custom Search Engine know not to index the content?

I've replaced the WP search on my site with a Google CSE. Google has a nice feature that lets you specify that certain areas of the page should not be indexable, by adding a "nocontent" class to those ...
0
votes
2answers
377 views

Return a custom value in a function added to an action hook

I looked into the difference between action and filter hooks, and as far as I understand, it is not possible to have a function, which is added to an action hook, return a (custom) value. My ...
0
votes
0answers
142 views

Converting a checkbox filter for custom fields to a dropdown

I've been scratching my head trying to figure this out for awhile now and was wondering if someone could provide some help. My PHP knowledge isn't the best so I'm working with what I have and it ...
1
vote
1answer
22 views

Archive filter disappears on no results?

I have been working through this example: http://www.advancedcustomfields.com/resources/creating-wp-archive-custom-field-filter/ That a colleague of mine found for creating a simple checkbox-based ...
6
votes
3answers
4k views

How to Pass External Variables to Filters/Actions

I find myself needing to pass custom data to a filter provided by a 3rd party plugin. All of the ways I've seen to do this are really complicated and hard to wrap my head around. Take this example: ...
0
votes
1answer
11 views

Custom post type with Filter and Page Nav

A custom post type custom also have special custom fields people and location I am trying to get this in the listing archive page with a filter on people location year (which is the post date) to ...
0
votes
1answer
24 views

Modifying WP_Title For Custom Post Type

Trying to modify the output of the WP_Title through a custom post type with a filter. I've had no issues doing it to the_title but I assume as the wp_title function is called through the header it's ...
0
votes
1answer
26 views

Make the 'all' filter default instead of 'mine' in a custom post type

I reckon this one is quick and easy... I think I'm just missing something very obvious. My inquiry is nearly identical to this stackoverflow post. For non-admin users, the default filter for posts ...
2
votes
1answer
244 views

SSL certificate for the host could not be verified

I'm getting this error in a log file created by WooCommerce "The SSL certificate for the host could not be verified." The error is being generated by WordPress' file /wp-includes/class-http.php ...
1
vote
1answer
2k views

ajax for filtering posts by category in wordpress loops

I've been looking around for a way to filter my posts on http://www.waziproject.com/wazimagazine/ without reloading the page. So my question is if anyone can help me out to turn the following into a ...
3
votes
1answer
3k views

adding a filter to a shortcode?

<?php echo do_shortcode('[mingleforum]'); ?> inserts the mingle forum into my content! is it possible to use add_filter() on that?
6
votes
1answer
59 views

How to add taxonomy filter on the query fly?

I try to add tax query on pre_get_posts hook using following code : // Add custom posts to main query (archive and home) add_action( 'pre_get_posts', 'add_post_types_to_query' ); function ...
1
vote
1answer
14 views

Dropdown category filter

Ive an array set up to filter through various categories, currently it is only displaying 10 a maximum of ten posts instead of all of them. Where have i gone wrong? <div class="select-search"> ...
0
votes
0answers
15 views

How do I remove_action for the function from included file

I'm building a theme and trying to reuse code from another file in my header.php by doing this: include_once( get_stylesheet_directory() . '/root-theme/header.php' ); This include works fine. But ...
0
votes
1answer
22 views

Problem with Class, Filters and Callbacks

according to this Callback example if I'm referencing a method inside a class, I should use add_filter by specifying an array with 2 elements, first the object then the method. Here is my code: ...
0
votes
2answers
1k views

How to append new form elements in “Add New” form of Users in Wordpress admin panel?

I'm developing a WordPress plugin and I want to append some extra form fields in add new form of Users section inside admin panel without editing core files. Can somebody help me in achieving this.
1
vote
2answers
275 views

user_has_cap filter allows edit but will not allow save

Problem I'm working on a website where we need to be able to put a username in the custom field of a custom post type, and allow the user specified to make changes to that post and only that post. I ...