Adding ACF to columns in Wordpress

functions.php

// ADD NEW COLUMNS
function custom_columns_head($columns) {
	$columns = array(
		'cb' => '<input type="checkbox" />',
		'title' => 'Title',
		'custom_field_1' => 'Column Name',
		'custom_field_2' => 'Column Name',
		'date' => 'Date'
		);
    return $columns;
}
 
// SHOW THE CUSTOM FIELD
function custom_columns_content($column_name) {
	global $post;

    if ($column_name == 'custom_field_1') {
        $custom_field = get_field('custom_field_1', $post->ID);
        if ($custom_field) {
            echo $custom_field;
        }
    }

    if ($column_name == 'custom_field_2') {
        $custom_field = get_field('custom_field_2', $post->ID);
        if ($custom_field) {
            echo $custom_field;
        }
    }
}

//TO ADD NEW COLUMNS TO POSTS
add_filter('manage_posts_columns', 'custom_columns_head');
add_action('manage_posts_custom_column', 'custom_columns_content');

//TO ADD NEW COLUMNS TO CUSTOMPOSTTYPE
add_filter('manage_customposttype_posts_columns', 'custom_columns_head');
add_action('manage_customposttype_posts_custom_column', 'custom_columns_content');