LinkOgDataFieldtype.php

<?php

namespace Statamic\Addons\LinkOgData;

use Statamic\Extend\Fieldtype;

class LinkOgDataFieldtype extends Fieldtype
{
    /**
     * The blank/default value
     *
     * @return array
     */
    public function blank()
    {
        return [
            'url' => null
        ];
    }

    /**
     * Pre-process the data before it gets sent to the publish page
     *
     * @param mixed $data
     * @return array|mixed
     */
    public function preProcess($data)
    {
        return $data;
    }

    /**
     * Process the data before it gets saved
     *
     * @param mixed $data
     * @return array|mixed
     */
    public function process($data)
    {
        if ($data['url'] && !preg_match("/^http(s)?:\/\//", $data['url']) && !preg_match("/^\//", $data['url']))
        {
            $data['url'] = 'http://' . $data['url'];
        }

        return $data;
    }
}