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I like to use a child-theme.

The parent functions.php

function starkers_widgets_init() {
// Area 1, located at the top of the sidebar.
register_sidebar( array(
    'name' => __( 'Primary Widget Area', 'starkers' ),
    'id' => 'primary-widget-area',
    'description' => __( 'The primary widget area', 'starkers' ),
    'before_widget' => '<li>',
    'after_widget' => '</li>',
    'before_title' => '<h3>',
    'after_title' => '</h3>',
) );

// Area 2 ...

My child-theme functions.php

function xtreme_unregister_sidebar() {
    unregister_sidebar('primary-widget-area');
    }
    add_action( 'childtheme_sidebars', 'xtreme_unregister_sidebar' );

But doesn´t work for.
Thanks

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2 Answers 2

up vote -1 down vote accepted

Check the code bellow, I think that should work.

add_action( ‘after_setup_theme’, ‘remove_default_sidebars’, 11 );
function remove_default_sidebars(){
remove_action( ‘widgets_init’, ‘starkers_widgets_init’ );
}
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WOW, works too, thanks a lot. –  ogni Apr 22 '12 at 17:21
    
I just edit the quotes // Remove all widgets from Starkers-Theme add_action( 'after_setup_theme', 'remove_default_sidebars', 11 ); function remove_default_sidebars(){ remove_action( 'widgets_init', 'starkers_widgets_init' ); } –  ogni Apr 22 '12 at 17:22

The Title of this post is for unregistering widgets not really sidebars, though I am glad the user got what they were looking for. For those searching for how to unregister widgets using a child-theme where the widget was registered in the parent theme, you can do that with this:

Assuming the Parent Theme's Widget is registered at the widgets_init hook, all you need to do is wrap your unregister_widget() call inside of a function, hook that function into widgets_init, and give your hook a higher priority number than the Parent Theme's widgets_init-hooked function.

Assuming the Parent Theme hooks into widgets_init without giving a priority number, the function will default to 10. So, just give your hook call a priority of 11 or greater.

so something like this:

add_action( 'widgets_init', 'remove_theme_widgets', 11 );

function remove_theme_widgets() {
    unregister_widget('parent_theme_widget_class');
}

Source

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