!is_page_template not working with && operator

Question

On single custom post types using the single-course.php template I want a different breadcrumb option to happen, but it's not obeying the && operator in the if statement:

<?php if ( function_exists('yoast_breadcrumb') && !is_page_template( 'single-course.php' ) ) {
    yoast_breadcrumb('<p id="breadcrumbs">','</p>');
} else { ?>
    <p id="breadcrumbs"><span xmlns:v="http://rdf.data-vocabulary.org/#"><span typeof="v:Breadcrumb"><a href="<?php echo site_url(); ?>" rel="v:url" property="v:title">Home</a> » <span rel="v:child" typeof="v:Breadcrumb"><a href="<?php echo site_url('/tracks'); ?>" rel="v:url" property="v:title">Tracks</a> » <strong class="breadcrumb_last"><?php echo get_the_title(); ?></strong></span></span></span></p>
<?php } ?>

This is a template piece that is called in the single-course.php template (and others) after the loop:

    <main class="main" role="main">
        <?php while (have_posts()) : the_post(); ?>
            <?php get_template_part('templates/page', 'header'); ?>

Thanks for any assistance.

Answer 1

You need to include is_page() in your if statement :

<?php if ( function_exists('yoast_breadcrumb') && is_page() && !is_page_template( 'single-course.php' ) ) {
    yoast_breadcrumb('<p id="breadcrumbs">','</p>');
} else { ?>
    <p id="breadcrumbs"><span xmlns:v="http://rdf.data-vocabulary.org/#"><span typeof="v:Breadcrumb"><a href="<?php echo site_url(); ?>" rel="v:url" property="v:title">Home</a> » <span rel="v:child" typeof="v:Breadcrumb"><a href="<?php echo site_url('/tracks'); ?>" rel="v:url" property="v:title">Tracks</a> » <strong class="breadcrumb_last"><?php echo get_the_title(); ?></strong></span></span></span></p>
<?php } ?>

Answer 2

On single custom post types using the single-course.php template I want a different breadcrumb option to happen

is_page_template will not work on non-pages. If you're looking to tell if you're on a single custom post type page, you should use is_singular and pass in the custom post type name:

if (function_exists('yoast_breadcrumb') && !is_singular('course')) {
  // ...
} else {
  // ...
}

On important note here: if yoast_breadcrumb doesn't exist you will get your alternative breadcrumbs on every page, not just on singular course pages.