Relationship mapping with NeoEloquent

I'm tinkering with Neo4j 2.3.0 and Laravel 5.1 using NeoEloquent. I've set up a couple of dummy nodes and some relationships between them:

image of Neo4j model - apologies, I cannot insert images directly yet :)

So articles can use a template. The inverse of this relationship is that a template is used by an article.

I've set up the classes like so:

Class Template extends Model
{
    public function articles()
    {
        return $this->hasMany('App\Article', 'USED_BY');
    }
}

And:

Class Article extends Model
{
    public function template()
    {
        return $this->belongsTo('App\Template', 'USES');
    }
}

So far, so good, I think.

I have a page where I am wanting to eventually list all of the articles in the system, along with some useful metadata, like the template each ones uses. For this, I have set something up in the controller:

$articles = array();

foreach (Article::with('template')->get() as $article) {
    array_push($articles, $article);
}

return $articles;

Not the most elegant, but it should return the data for both the article and it's associated template. However:

[{"content":"Some test content","title":"Test Article","id":28,"template":null},{"content":"Some flibble content","title":"Flibble","id":31,"template":null}]

So the question is - why is this returning null?

More interestingly, if I set up the relationship to the same thing in BOTH directions, it returns the values. i.e. if I change the USED_BY to USES, then the data is returned, but this doesn't make sense from an architectural point of view - a template does not 'use' an article.

So what am I missing?

via Chebli Mohamed