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1. ballinascreen
   Member
   Posted 2 years ago #

   Folks,

   In the interests of performance and all round good housekeeping, I'd like to minimise the number of scripts/styles that need to be loaded by the browser depending on which widgets I have enabled - so that when at least one instance of a given widget is enabled, its dependent scripts/styles are enqueued as normal with wp_enqueue_script() and wp_enqueue_style() - and when no instances of a given widget are currently enabled, the depdendent scripts/styles are not enqueued and therefore do not appear in the document output.

   I've been looking at some form of mechanism using is_active_widget() but I just can't seem to make it work - i.e.

   if (is_active_widget('My_Widget_Class'))
   {
     wp_enqueue_script(...)
     wp_enqueue_style(...)
   }

   but it doesn't seem to work. Note, all my widgets extend the WP_Widget class in order to allow them to be used as multi-widgets in 2.8.x (if that makes any difference).

   Is there a recommended approach to this - or maybe I'm in the right ball-park, but just doing it wrong?

2. digitalnature
   Member
   Posted 2 years ago #

   I have the same issue...

3. -JFK-
   Member
   Posted 2 years ago #

   SAME PROBLEM TOO!!!

4. -JFK-
   Member
   Posted 2 years ago #

   Ok... did some research and believe I found a solution!

   First, I am creating my own custom plugins/widgets. The problem I was having is that my custom Widget needs to have some JavaScript code executed in HEAD of HTML document. So, I have it doing like:

   add_action('wp_head','custom_widget_init');
   function custom_widget_init(){
       echo '<script>bla bla bla...</script>';
   }

   BUT, that was causing problems on other site I have running under WordPress MU setup. Needed a way to say.. execute widget code ONLY if it is active for selected site/blog. I am also extending WP_Widget class for my custom widget. The following is my solutions (in short-hand):

   if( is_active_widget( false, false, 'custom_leaders_widget' ) ){
   	add_action('wp_head', 'custom_widget_init');
   }
   
   function custom_widget_init(){
       echo '<script>bla bla bla...</script>';
   }
   class Leaders extends WP_Widget {
   
       /** constructor */
       function Leaders() {
   
   		$widget_ops = array('description' => __('This description', 'Leaders'));
           parent::WP_Widget('custom_leaders_widget', $name = 'Leaders', $widget_ops);	
   
       } // End Leaders

   Hope that makes sense and helps others looking for same solution!

   -JFK-

5. ballinascreen
   Member
   Posted 2 years ago #

   You, my friend, are a star! Works for me too!

   Much appreciated.

6. arstropica
   Member
   Posted 1 year ago #

   Thanks for explaining this... You should make a tutorial - I am sure many would really appreciate it.

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