bike-admin/app/Models/Announcement.php

<?php

namespace App\Models;

use App\Traits\ModelHelpers;
use Illuminate\Database\Eloquent\Model;

class Announcement extends Model
{
    use ModelHelpers;
    //
    protected $guarded = [];

    const STATUS_OK = 1;
    const STATUS_NO = 0;

    public function areas(){
        return $this->belongsTo(Area::class,'area_id','id');
    }

}