UNIT3D-Community-Edition/app/Models/PrivateMessage.php

<?php
/**
 * NOTICE OF LICENSE.
 *
 * UNIT3D is open-sourced software licensed under the GNU General Public License v3.0
 * The details is bundled with this project in the file LICENSE.txt.
 *
 * @project    UNIT3D
 *
 * @license    https://www.gnu.org/licenses/agpl-3.0.en.html/ GNU Affero General Public License v3.0
 * @author     HDVinnie
 */

namespace App\Models;

use App\Helpers\Bbcode;
use Illuminate\Database\Eloquent\Model;

class PrivateMessage extends Model
{
    /**
     * Belongs To A User.
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function sender()
    {
        return $this->belongsTo(User::class, 'sender_id')->withDefault([
            'username' => 'System',
            'id'       => '1',
        ]);
    }

    /**
     * Belongs To A User.
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function receiver()
    {
        return $this->belongsTo(User::class, 'receiver_id')->withDefault([
            'username' => 'System',
            'id'       => '1',
        ]);
    }

    /**
     * Parse Content And Return Valid HTML.
     *
     * @return string Parsed BBCODE To HTML
     */
    public function getMessageHtml()
    {
        return Bbcode::parse($this->message);
    }
}