强强强强

Supermen

`<?php
namespace Gtdxyz\Uidev\Listeners;

use Flarum\Frontend\Document;
use Flarum\Api\Serializer\ForumSerializer;
use Flarum\Settings\SettingsRepositoryInterface;

class LoadHeadTagFromDatabase
{
/**
* @var string
*/
protected $packagePrefix = 'gtdxyz-ui-dev.';
/**
* @var array
*/
protected $fieldsToGet = [
'head_tag',
];

/**
 * @var SettingsRepositoryInterface
 */
protected $settings;

/**
 * LoadSettingsFromDatabase constructor.
 *
 * @param SettingsRepositoryInterface $settings
 */
public function __construct(SettingsRepositoryInterface $settings)
{
    $this->settings = $settings;
}

public function __invoke(Document $document)
{
    //For Google Analytics
    foreach ($this->fieldsToGet as $field) {
        $value = $this->settings->get($this->packagePrefix.$field);

        if (isset($value) && !empty($value)) {
            $document->head[] = $this->settings->get($this->packagePrefix.$field);
        }
    }
}