Restrict maximum title length

/**
 * Restrict the title to 80 characters (client side)
 * @param array $field
 * @return array
 */
add_filter('site-reviews/field/text', function ($field) {
    if ('title' === $field['path']) {
        $field['maxlength'] = 80;
    }
    return $field;
});

/**
 * Restrict the title to 80 characters (server side)
 * @param array $rules
 * @return array
 */
add_filter('site-reviews/validation/rules', function ($rules) {
    if (array_key_exists('title', $rules)) {
        $rule = 'max:80';
        // change any existing max: rule
        $rules['title'] = preg_replace('/(max:\d+)/', $rule, $rules['title'], -1, $result);
        // if no max: rule was found, then add it
        if (0 === $result) {
            $parts = explode('|', $rules['title']);
            $parts[] = $rule;
            $rules['title'] = implode('|', $parts);
        }
    }
    return $rules;
});