Laravel 5 relationships

I have two tables. Like this

**

user_accounts               usersonglists
--------------              ---------------
id                          id
username                    user_account_id
slug                        etc..
etc..

** I created a route like this

/u/{slug}/songlists

This relation methot in songlist model

public function userAccounts()
{
    return $this->belongsTo('App\Models\User\UserAccounts','user_account_id','id');
}

I created controller methot like this

$songLists = $SongListRepository->getSongListsByUserSlug($slug);

This is getSongListByUserSlug($slug) methot

$songList = $this->model->with('userAccounts')->get();

I want to get songlists by user with $slug.

Can someone help me?

via Chebli Mohamed