I need to change the value of a function from a WordPress plugin that I'm using.
If I do it in the original plugin file, it works perfectly, but I'd rather make it in file functions.php to avoid problems on plugin update.
I need to change this:
public static function loop_shop_per_page() {
return get_option( 'posts_per_page' );
}
Into this:
public static function loop_shop_per_page() {
return '-1';
}
How would I go to create a filter in file functions.php to do just that?
Without changing the core plugin code, I don't think you can achieve what you want.
Well written plugins usually have the apply_filters method called on anything that might need to be tweaked by a theme developer. As such, the plugin code should look something like this:
// Using apply_filters() to allow overriding of values...
public static function loop_shop_per_page() {
$value = get_option( 'posts_per_page' );
return apply_filters('filter_loop_shop_per_page', $value);
}
Then, in your functions.php file, you'd be able to change the value on for that by adding a filter like so:
add_filter('filter_loop_shop_per_page', 'mytheme_loop_shop_per_page');
function mytheme_loop_shop_per_page($value){
return -1;
}
Unfortunately, unless you edit the plugin code, you probably won't be able to do what you want. You could always search the plugin for apply_filters to see if there's anything else you might be able to tweak to achieve the same results.
Related
There is not a specific answer for this exact issue so i am going to try this.
So in the parent theme of a wordpress website there is a php file named helpers-icons.php. The exact path for this file is /wp-content/themes/parent/inc/helpers/helpers-icons.php, and the content of that file is
function get_flatsome_icon($name, $size = null) {
if($size) $size = 'style="font-size:'.$size.';"';
return '<i class="'.$name.'" '.$size.'></i>';
}
This file is then inlcuded in functions.php of that parent theme.
Now i want to override a function inside and being more specific, just this line of code
return '<i class="'.$name.'" '.$size.'></i>'; to return '<span class="'.$name.'" '.$size.'></span>';
how could i do that on child theme without messing with the php files of parent?
Thanks in advance
EDIT
EDIT 2
EDIT - Different Approach
You can copy the file /inc/helpers/helpers-icons.php into your child theme (keep the folder structure - e.g. /child-theme/inc/helpers/helpers-icons.php). That way it will be called instead of the original file and you can change the function there.
(Original Answer) Removing Functions From Hooks:
You’ll need to de-hook the parent function and hook your child theme function instead by using remove_action() and remove_filter().
The one you use will depend on whether the function is attached to an action hook or filter hook in the parent theme.
To remove a function, use:
remove_action( 'init', 'parent_function' );
However, this won’t work on its own, you will need to attach this function to a hook which will fire after the hook which the parent theme function is attached to. This is because you can’t remove the action before it’s been fired.
function child_remove_parent_function() {
remove_action( 'init', 'parent_function', [priority level] );
}
add_action( 'wp_loaded', 'child_remove_parent_function' );
NOTE: If the parent_function() was loaded using a priority level, you have to unloaded by stating the same level as well. That’s why [priority level] is in square brackets.
As you may imagine, wp-loaded is a hook that comes after init, so remove_action() can really remove the parent_function() that was loaded to init.
Now you’re free to write whatever new function you’d like.
function child_function() {
// your function
}
add_action( 'init', 'child_function' );
Source and further reading: https://obsessive-coffee-disorder.com/how-to-override-parent-theme-functions-in-wordpress/
I'm using "Advanced Scripts plugin" to modify a function of other plugin, the fuction I'm trying to modify is wrappd with if( !function_exists('some_function') ).
the function inside the plugins is like this
if( !function_exists('send-invoice') ){
function send-invoice(){
//The Plugin Invoice
}
}
This is what I did
function send-invoice(){
//My Custom Invoice
}
add_action('init', 'send-invoice');
How can I make sure that my code runs before the plugin codes?
The plugin load before the theme, I tried plugin-loaded hook but nothing changed
You can to use the anonymous function for example:
add_action('init', function() {
//code here
});
More detail is here
Or use another hook muplugins_loaded:
function send-invoice(){
//My Custom Invoice
}
add_action('muplugins_loaded', 'send-invoice');
If nothing else work for you you can create a custom plugin, name it something like "aaamyplugin" and just insert there a single .php file with the function you are trying to override. This is the easiest (not cleanest) way to make sure your code overrides the plugin functions.
The reason for this is because Wordpress plugin loading order is simply alphabetical, that means that everything named before the plugin you are trying to override, get loaded first.
The cleanest way would be to look into the source code of the plugin to understand how it does what it does. Like: when does it load that file that contains the function you are trying to override? That's the important question to answer if you want to go with clean way
Trying to fetch output in A.tpl but not getting any output. I think i'm doing something wrong to call php function in tpl file.
A.tpl
{myModifier}
B.php
class Geolocation{
public function sm_loc($params, Smarty_Internal_Template $template)
{
return "100.70";
}
}
$smarty1 = new Smarty();
$smarty1->registerPlugin('modifier', 'myModifier', array('Geolocation', 'sm_loc'));
I 've already used this code. And this doesn't seem to work. It also breaks my existing working code in A.tpl post this use.
My Need here is to get output from the php function in A.tpl from an external php file.
Thanks in Advance. Sorry for being noob.
To add this modifier to Smarty and use it in your template, you're best to use a WHMCS hook.
If you create a new PHP file under the '~/includes/hooks/' directory (you can name it anything - in this case, let's use 'myhook.php'), WHMCS will automatically inject this hook on each request.
For this, you're going to want to use the ClientAreaPage hook. Inside your hook, you can then access the global $smarty variable.
Example:
function MySmartyModifierHook(array $vars) {
global $smarty;
// I recommend putting your Geolocation class in a separate PHP file,
// and using 'include()' here instead.
class Geolocation{
public function sm_loc($params, Smarty_Internal_Template $template) {
return "100.70";
}
}
// Register the Smarty plugin
$smarty->registerPlugin('modifier', 'myModifier', array('Geolocation', 'sm_loc'));
}
// Assign the hook
add_hook('ClientAreaPage', 1, 'MySmartyModifierHook');
That should do the trick. If you want to explore with other hooks, you can take a look at the Hook Index in the WHMCS documentation.
The function names in each of your hook files must be unique.
As a side note, if you're only wanting to run this hook on specific pages, you can check the templatefile key in the passed $vars array. For example, say you only wanted this hook to run on the 'View Cart' page on the order form:
function MySmartyModifierHook(array $vars) {
global $smarty;
// If the current template is not 'viewcart', then return
if ($vars['templatefile'] != 'viewcart')
return;
// ... your code here ...
}
Also, note that with hooks like the 'ClientAreaPage' hook, returning an array of keys and values will automatically add them as Smarty variables. So if your hook function ended with return ['currentTime' => time()];, you could then use {$currentTime} in your Smarty template to output its value.
I have a plugin that uses apply_filters like this:
$additional_fields = apply_filters('attachment_meta_add_fields', $additional_fields);
In my theme's functions.php, I do:
function addAttachmentMeta($additionalFields) {
return $addtionalFields;
}
add_filter( 'attachment_meta_add_fields', 'addAttachmentMeta', 1, 1 );
But the function addAttachmentMeta never runs.
How can I alter my apply or add filter statements to make it so that addAttachmentMeta gets called?
Edit:
This is a custom plugin that I wrote based off tutorials on how to add additional attachment meta fields. The whole source is here: http://pastebin.com/7NcjDsK5. As I mentioned in the comments, I know this is running and working because I can add additional fields in this plugin file, but not by using the filters because the filter doesn't get added.
I can see var_dumps before and after the apply_filters statement, but the function I've pointed to with add_filter never gets called.
According to the order WordPress' core loads, function.php gets called after all plugins are loaded and executed.
You need to make sure the apply_filters() in your plugin runs AFTER your add_filter() is called. Otherwise at the point where your filters are 'applied', add_filter() simply hasn't been called yet.
What you could do is use a hook to make that part of your plugin run after functions.php has loaded. You could use the add_action('after_setup_theme', 'function_name') hook.
Wrap the last three lines of your plugin file inside a function and execute it after functions.php runs.
function addAttachmentMeta() {
$additional_fields = array();
$additional_fields = apply_filters('attachment_meta_add_fields', $additional_fields);
$am = new Attachment_Meta( $additional_fields );
}
add_action('after_setup_theme', 'addAttachmentMeta');
I want to apply a separate theme for each user role. I know there is option to do this from the admin side, but I want to do this programmatically.
I found an option using global $custom_theme. I changed my code as
function mymodule_config_preprocess_page(&$variables) {
global $custom_theme;
$custom_theme = 'bluemarine';
init_theme();
}
But it is not affecting the theme .Is this required any modifications?
Pls help me
I think it's too late to change the theme at the point of preprocessing variables, you'll probably want to do this in hook_init():
function mymodule_init() {
global $custom_theme;
$custom_theme = 'bluemarine';
}
As far as I know there's no need to call init_theme() as Drupal will do this for you later on in the process, using the global $custom_theme to decide which theme to use.
The theme is already initialized when your mymodule_config_preprocess_page() is executed. once initialized, the theme cannot be re-initialized.
Looking at the ThemeKey module code, it changes the value of $custom_theme in hook_init(). That's probably the best hook to implement theme change in Drupal 6.
function mymodule_init() {
global $custom_theme;
$custom_theme = 'bluemarine';
}