normalizeAcfLinkField.php

/**
 * Normalize output from the ACF Link field
 *
 * Always returns an array, if the field is empty, it returns this empty array:
 * ['title' => '', 'url' => '', 'target' => '']
 *
 * Additionally, if the title is empty, it is populated from the url
 *
 * Target will be either an empty string or a fully-formed html attribute, like this:
 * The array ['target => '_blank']
 * Would yield this: "target='_blank'"
 *
 * This also attempts to extract a post from the url and populates the following:
 * $arr[has_post] = boolean
 * $arr[post] => the post object or null
 *
 * TODO: This should probably return an object...
 */
function normalizeAcfLinkField($acfLink)
{
    $link = is_array($acfLink) ? $acfLink : ['title' => '', 'url' => '', 'target' => ''];

    d(
        $link,
        parse_url($link['url']),
        get_page_by_path(parse_url($link['url'], PHP_URL_PATH), 'OBJECT', ['page', 'news', 'asset', 'team-member'])
    );
    // d($link, parse_url($link['url'], PHP_URL_PATH), get_page_by_path($link['url']));
    if (!empty($link['url'])) {
        // d(url_to_postid($link['url']));
        $link['post'] = url_to_postid($link['url']) ?: null;
        $link['has_post'] = !!$link['post'];
    }

    if (empty($link['title']) && !empty($link['url'])) {
        $link['title'] = $link['url'];
    }

    if (!empty($link['target'])) {
        $link['target'] = "target=\"$link[target]\"";
    }

    return $link;
}