Linked Questions
13 questions linked to/from Difference Between Filter and Action Hooks?
6
votes
1
answer
9k
views
What is the difference between add_action and add_filter [duplicate]
I just want to know what is the difference between the add_action and add_filter. I just could not get it enough in the documentation of wordpress. Can anyone explain it more broader and simpler. ...
- 93
1
vote
1
answer
1k
views
What's the difference between hooks, filters and actions? [duplicate]
It seems like the terms hooks, filters and actions are used interchangeably. What's the difference between them? What do they do? How do I use them?
- 15k
6
votes
1
answer
13k
views
How to add a class to the attachment images
When I'm in the Wordpress editor and I add an external image with the 'img' button, my html result wil be like this:
<img src="http://example.com/image.jpg" alt="image" />
How can ...
- 67
7
votes
2
answers
2k
views
Clarification on filters and hooks
I am about to start my first WordPress project and I have the task of moving customized core code that override the core into separate functions/files (this way it'll be easier to maintain when we ...
- 335
4
votes
2
answers
1k
views
Custom theme hooks / filters - passing arguments
I'm getting confused trying to implement these custom theme hooks. Trying to wrap my head around that.
I thought i understood this. but now after reading code for several hours; it's made it worst.
...
- 1,197
1
vote
1
answer
4k
views
Validate form in functions.php, send errors back to template
I have a form in a template that upon submission should be validated, and any errors should be displayed, and if no errors, insert the data into the database.
I'm new to wordpress, but my idea was ...
- 253
0
votes
1
answer
3k
views
changing variable through filters or action hooks
it appears i have a problem with understanding how add_action,add_filter and apply_filters work.
somewhat abbreviated, i have the following scenario:
in a template file i have this
while ( $...
- 57
0
votes
1
answer
2k
views
Why won't the action hook wp_head accept parameters?
I'm working on a plugin that adds scripting to the head using
add_action('wp_head',..);
I have to pass a variable to the function to get my desired result. To test this I'm simple "echoing" out the ...
- 465
0
votes
1
answer
1k
views
How apply_filters work in WordPress?
I know that how do_action works in WordPress.
function foobar_func( $atts ){
// Action hook before any output!
do_action( 'dr_before_get_qod_text' );
echo "foo and bar";
}
add_shortcode(...
1
vote
3
answers
2k
views
Redirect customer to login if not logged in when proceeding to checkout
I'm trying to redirect customers, who are not logged in, when they push the "proceed to checkout button" on my cart page but nothing happens.
Here's my code:
function custom_redirect_checkout(){
if (...
- 11
0
votes
1
answer
1k
views
Replace video url with video player
This is my plugin, this will replace the video shortcode format [video url="http://www.youtube.com/watch?v=sOnqjkJTMaA"][video] (Requirement is to show the video when a user placed a shortcode like ...
- 11
2
votes
1
answer
558
views
Define a function outside a class and call the function using action or filter hook
Hi Currently i am developing a sub plugin for my own main plugin. Please see the main plugin code below
<?php
class MyClass
{
function __construct()
{
function test1()
{
...
- 125
0
votes
1
answer
216
views
Trying to use WP_Query to display a custom post type
I'm trying to use WP_Query in function.php to display a custom post type on a certain page.
I just can't seem to get it to work, can anyone see issues with my code? nothing is output at all and there ...
- 253