one to many relation not working

hey guys i have 3 tables

site_users

site_notifications

site__users__notifactions

in site__users__notifactions

i have user_id and notification_id

and i have a relation in the SiteUser Model as follow

public function get_notifications()

    {
        return $this->hasMany('App\Site_Users_Notifaction','user_id');
    }

when i try to call the relation in my blade like

@foreach($notifications as $notification)

{{dd($notification->get_notifications())}}

     @endforeach 

it gives me that error

Method Illuminate\Database\Query\Builder::get_notifications does not exist. (View: C:\xampp\htdocs\myspare\resources\views\site\notifications.blade.php)

and when i remove the () from the relation it gives null