Sort Posts by meta value - Generate Press

functions.php

<?php

add_filter( 'generateblocks_query_loop_args', function( $query_args, $attributes ) {

    // apply filter if loop has class: courses-grid
    if (! is_admin() && ! empty( $attributes['className'] ) && strpos( $attributes['className'], 'courses-grid' ) !== false) {
       
        $query_args = array_merge( $query_args, array(
            'meta_key' => 'sort_order',
            'orderby' => 'meta_value',
            'order' => 'ASC'
        ));
    }

    return $query_args;
}, 10, 2 );