Reply To: Show Slider Only On Category Posts

[Senff]

First, create a new file based on the “standard” single.php and call it
single-news.php. This will be the template that all posts from the News category will use, so in that file, put the slider code somewhere.

Then in your functions.php file, add this code:

add_filter('single_template', create_function(
    '$the_template',
    'foreach( (array) get_the_category() as $cat ) {
        if ( file_exists(TEMPLATEPATH . "/single-{$cat->slug}.php") )
        return TEMPLATEPATH . "/single-{$cat->slug}.php"; }
    return $the_template;' )
);