How to filter CPTS from custom taxonomy and CPT?

1

Well based on this topic I figured it was best to open a new one since I have a couple more questions besides the one I posted there.

I want to have a loop that shows a post of each custom taxonomy (themes). But also shows a maximum of 2 posts per CPT.

Themes are global to every CPT we have on our website.

::
I created a Custom taxonomy called ‘Themes’
This is out I set it up:

Outer loop: https://i.imgur.com/zcWZo60.png
Inner loop: https://i.imgur.com/8kILCnX.png and https://i.imgur.com/3UhkmeT.png

But it didn’t work with {post_terms_customthemes} so I put {term_name} but not sure if that is working. because it shows repeated posts.

Also not sure how I could limit to show a max of 2 posts per CPT.

This will be showed in a SLIDER. The slider itself is a Brickxextras element.

2

Well with a bit LOT of help of Claude3.5 I was able to get a query that fit my needs.
Could you let me know if this is the proper way to do this? I may need more in the future for other loops so this would be really appreciated.

I’m also concerned about performance issues that a solution like this could cause.

Code here 
// Define the post types we want to query
$post_types = array('sfwd-courses', 'podcast', 'document', 'video');

// ADJUSTABLE PARAMETERS
$total_posts_to_show = 10;     // Total number of posts to display
$max_posts_per_cpt = 3;        // Maximum number of posts per Custom Post Type
$posts_per_theme = 1;          // Number of posts to show per theme (Themes)

// Initialize an array to store our query results
$query_results = array();

// Initialize a counter for each post type
$post_type_counts = array_fill_keys($post_types, 0);

// Get all terms from the 'themes' taxonomy
$terms = get_terms(array(
    'taxonomy' => 'themes',
    'hide_empty' => true,
));

// Loop through each term
foreach ($terms as $term) {
    $args = array(
        'post_type' => $post_types,
        'posts_per_page' => $posts_per_theme,
        'tax_query' => array(
            array(
                'taxonomy' => 'themes',
                'field' => 'term_id',
                'terms' => $term->term_id,
            ),
        ),
        'meta_query' => array(
            array(
                'key' => 'cpt_most_accessed',
                'value' => '1',
                'compare' => '=',
            ),
        ),
    );
    
    $query = new WP_Query($args);
    
    while ($query->have_posts()) {
        $query->the_post();
        $current_post_type = get_post_type();
        
        if ($post_type_counts[$current_post_type] < $max_posts_per_cpt) {
            $query_results[] = get_the_ID();
            $post_type_counts[$current_post_type]++;
            
            if (count($query_results) >= $total_posts_to_show) {
                break 2; // Break both while and foreach loops
            }
        }
    }
    
    wp_reset_postdata();
}

// Return the query parameters as a PHP array
return array(
    'post_type' => $post_types,
    'post__in' => $query_results,
    'posts_per_page' => count($query_results),
    'orderby' => 'post__in',
);
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