Custom post type in loop

Tried adding $query = new WP_Query( ‘post_type=products’ );
in themefunctions and add_filter( ‘pre_get_posts’, ‘my_get_posts’ );
function my_get_posts( $query ) {
if ( is_home() && $query->is_main_query())
$query->set( ‘post_type’, array( ‘post’,’product’ ) );
return $query;
}

Still not showing the product post type.

This is a beautiful theme for any type of site. Thanks.