The function you mentioned uses a WordPress hook. You can also use this to change the class specifications.
I’m not sure what exactly you want to achieve, but I assume you don’t want the “singular” class on the body if an additional condition is not met. In that case, I would recommend
a) removing the class using the hook.
b) then resetting it if your condition applies.
For example (untested):
function twentyeleven_body_classes_replace_singular( $classes ) {
// find the entry with the class "singular".
$singular_key = array_search( 'singular', $classes, true );
// remove the entry.
if( $singular_key !== false ) {
unset( $classes[ $singular_key ] );
}
// now define your custom condition and add the class again.
// !!!
// return the resulting list of classes.
return $classes;
}
add_filter( 'body_class', 'twentyeleven_body_classes_replace_singular' );
Thanks for your suggestion, I assume this should work in the child theme’s function.php; I will give it a try.
Problem and my workaround, which works but is overwritten with each update of the parent theme:
Twenty Eleven has a template single.php for displaying all single posts which doesn’t include the sidebar. With the function twentyeleven_body_classes( $classes ), the div classes .singular are applied to single posts.
- Create a template single-sidebar.php for all single posts which includes the sidebar
- Add this template in the second if-statement of the function twentyeleven_body_classes( $classes ) to prevent the div classes .singular being applied to single posts. [&& ! is_page_template ( ‘sidebar-single.php’ )]
I use the method below to add the sidebar to both pages and single posts in Twenty Eleven. No need for a plugin and thanks to the use of a child theme it remains intact after updating.
1.
Create a child theme containing functions.php, page.php, and single.php.
2.
Add this code to functions.php:
// Twenty Eleven - Show sidebar on pages and single posts as well
add_filter('body_class', 'fix_body_class_for_sidebar', 20, 2);
function fix_body_class_for_sidebar($wp_classes, $extra_classes) {
if( is_single() || is_page() ){
if (in_array('singular',$wp_classes)){
foreach($wp_classes as $key => $value) {
if ($value == 'singular')
unset($wp_classes[$key]);
}
}
}
return array_merge($wp_classes, (array) $extra_classes);
}
3.
Add this call for the sidebar at the bottom of the files page.php and single.php (just above the call for the footer):
<?php get_sidebar(); ?>
4.
Done.
