how to use Custom post type dynamically

Question

I have created a new template page and I am displaying custom post type in that page as follows,

                   <div class="col-sm-4">
                    <?php $i = 1 ?>
                    <?php $posts = get_posts(array(
                        'post_type' => 'astroalbums',
                        'posts_per_page' => -1
                        ));
                        foreach ($posts as $post) : start_wp(); ?>
                    <?php if ($i == 1): ?>
                    <?php $link = get_permalink($post->ID); ?>
                    <?php the_title( '<h3 class="entry-title"><a href="' . esc_url( get_permalink() ) . '" rel="bookmark">', '</a></h3>' );?>
                    <a href="<?php the_permalink(); ?>"><?php the_post_thumbnail(); ?></a>
                    <?php endif; ?>
                    <?php if($i == 3){$i = 1;} else {$i++;} ?>
                    <?php endforeach; ?>

My custom post type is "astroalbums" and I want to use it dynamically. I have 4 custom post types. I want to create new page in dashboard and assign the above page template i have created. and each page will call different custom post type. It will be really great help Thank you, Trupti

Answer 1

You're retrieving the posts correctly, but it's seems that the problem is inside the foreach loop. As the default WordPress loop is not being used, you need to call functions which receive the post id as parameter or use the properties present in the $post object (which is an instance of the WP_POST class) in order to display the data.

One possible solution:

<?php
    $posts = get_posts([
        'post_type' => 'astroalbums',
        'posts_per_page' => 1
    ]);
?>

<?php foreach( $posts as $post ): ?>
    <?php $link = get_permalink( $post->ID ); ?>

    <h3 class="entry-title">
        <a href="<?php echo esc_url( $link ); ?>" rel="bookmark">
            <?php echo get_the_title( $post->ID ); ?>
        </a>
    </h3>
    <a href="<?php echo esc_url( $link ); ?>">
        <?php echo get_the_post_thumbnail( $post->ID ); ?>
    </a>
<?php endforeach; ?>