get_template_part causes 500 error

Question

I am trying to list posts in a widget I am working on at the moment. However, when I use the get_template_part function in my loop, my site just keeps loading until I get a 500 http error.

    $args       = array(
        'numberposts'      => 10,
        'orderby'          => 'date',
        'order'            => 'DESC',
        'post_type'        => $postType,
        'suppress_filters' => true
    );
    $postsQuery = new WP_Query( $args );

    if ( $postsQuery->have_posts() ) {
        while ( $postsQuery->have_posts() ) {
            get_template_part( 'content/content', $postType );
        }
        /* Restore original Post Data */
        wp_reset_postdata();
    }

When I comment the get_template_part out, everything works just fine. Also the loop seems to loop perfectly through the posts. Just the get_template_part is somewhat problematic. I don't have any idea, how I could figure out what the problem is. Any ideas? Maybe I am using it wrong or something?

---

Here's the solution:

I was missing the $postsQuery->the_post() in my loop. Also guilemons tip helped, that I needed a folder called content in the same directory where my php file was with the templates.

Answer 1

The get_template_part() function takes filepath relative to the file it is called in. Do you have a folder called 'content' which contains a file content-posttype.php? is the 'content' folder located in the same folder as this php file you are calling get_template_part() in?

Also, you can modify your while loop as follows:

        while ( $postsQuery->have_posts() ) {
          $postsQuery->the_post();
          get_template_part( 'content/content', $postType );//please check the file path.
        }

Answer 2

You're missing $postsQuery->the_post() in your loop. That function moves the loop to the next post, without it you're performing an infinite loop.

while ( $postsQuery->have_posts() ) {
    $postsQuery->the_post();
    get_template_part( 'content/content', $postType );
}

get_template_part() is irrelevant to the issue. I don't know enough about PHP's internals to be sure, but I suspect it's working when you comment it out because a loop with nothing in it isn't executed.