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1. naabster
   Member
   Posted 3 years ago #
   

   Hi,

   I'd like to call a 2.8 widget (extended WP_Widget class) directly from a template and / or plugin.
   The template i am trying to get a widget working doesn't have a sidebar, so I tried to initiate the widget class and call a specific widget like this:

   $sb = new WP_Widget();
   $sb->Widget_one();

   but it gives me some errors..
   Warning: Missing argument 2 for WP_Widget::__construct(), called in (......)
   and a Fatal error: Call to undefined method WP_widget::demowidget(....)

   The widget i am trying to call is working fine with my standard sidebar. I am sure it is not the widget itself..
   Do i need to load/include some other files? I didnt follow the widget development, so i dont really know wtf.

   Basically what i wanna do is: I want to call one (or more) specific widget(s) within a custom post/page template and not the whole sidebar which is defined on your widget admin page..

   thanks.

2. Samuel Wood (Otto)
   Tech Ninja
   Posted 3 years ago #
   

   Widgets are not made to be called directly. They go into registered sidebars.

   If you want to use a widget directly, you'll probably have to hack it up a bit to make it capable of a direct function call.

3. naabster
   Member
   Posted 3 years ago #
   

   it is actually pretty easy.
   After toying around for a bit I managed to call a widget from everywhere:

   $instance = array("title" => "My Widget", "number" => 9);
   $args = array("title" => "My Widget", "before_title" => "<h2>", "after_title" => "</h2>");
   $sb = new My_Widget_Class();
   $sb->widget($args,$instance);

4. maxchirkov
   Member
   Posted 3 years ago #
   

   @naabster - awesome snippet! I'm using it to call widgets from post/pages via shortcodes. The only problem with it is that the $instance['number'] doesn't pass the number to the widget method. But this will work:
   

   $instance = array("title" => "My Widget", "number" => 9);
   $args = array("title" => "My Widget", "before_title" => "<h2>", "after_title" => "</h2>");
   $sb = new My_Widget_Class();
   $sb->number = $instance['number'];
   $sb->widget($args,$instance);

5. maxchirkov
   Member
   Posted 3 years ago #
   

   When calling a widget from a post/page via shortcode, it's being output at the top of the post/page. I guess its because the widget method echoes the content instead of returning it by reference. Is there a way to get around it and output widget content in specific place?

   P.S. The workaround I came up with is to assign all the HTML within the widget method to a $variable and add a simple condition at the end to check if $instance['return'] is true - if yes - it returns the value or else prints it out. The return instance is declared as true in the shortcode function.

6. r-a-y
   Member
   Posted 3 years ago #
   

   Great! Exactly what I was looking for!

7. Zentode
   Member
   Posted 3 years ago #
   

   That is VERY useful! Glad I found it. Thanks.

   I have a problem that may solved by a variation of that code.

   In this section of my template:

   <?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('left-side-widgets') ) : ?>

   I would like to add something like:

   <?php else : ?>
<?php /* alternate sidebar file if no widgets detected in dynamic sidebar */ ?>

   <?php endif; ?>

   Obviously, I would like to include an alternate file if no widgets exist in that specific dynamic sidebar.

   How can I create that "switch"?

   I can use:
   file_get_contents($someurl);
   to grab the file if I must.

   Thanks for any help...

8. viniciusandre
   Member
   Posted 2 years ago #
   

   Thanks for the snippet!

   I've ran into this kind of problem:
   if (sidebar has widget) --> show sidebar
   else --> show some widgets by hand

   The results:

   Function to verify if sidebar has a widget:
   ------------
   

   function is_sidebar_active($sidebar_id, $force = false){
   
   		static $sidebars_widgets;
   
   		if($force || !isset($sidebars_widgets)){
   
   			$sidebars_widgets = get_option('sidebars_widgets', array());
   
   		}
   
   		if((int)$sidebar_id) $sidebar_id = sprintf('sidebar-%d', $sidebar_id);
   
   		return is_array($sidebars_widgets[$sidebar_id]) && count($sidebars_widgets[$sidebar_id]);
   
   	}

   Code in sidebar.php:
   ------------
   

   if (is_sidebar_active(1))
   
   				dynamic_sidebar('Blogs: Lateral Interna');
   
   			else {
   
   				widget_perfil();
   
   				$args = array (
   
   					'title' => '',
   
   					'before_widget' => '<li class="widget">',
   
   					'after_widget' => '</li>',
   
   					'before_title' => '<h2>',
   
   					'after_title' => '</h2>'
   
   				);
   
   				$instance = array ( 'title' => 'Categorias', 'number' => 1 );
   
   				$widget = new WP_Widget_Categories();
   
   				$widget->widget($args,$instance);
   
   				$args = array ( 'title' => '' );
   
   				$instance = array ( 'title' => 'Tweets @revistatitude', 'number' => 1 );
   
   				$widget = new WP_Widget_Tweets();
   
   				$widget->widget($args,$instance);
   
   			}

   Hope it helps someone.

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