Multiple level relationships on Laravel

Question

I have this problem. In Laravel, I have 3 Models, ie:

class Department{
    public function coordinations(){
        return $this->has_many('Coordination');
    }
}

class Coordination{
    public function sites(){
        return $this->has_many('Site');
    }
}

class Site{
    public function assets(){
        return $this->has_many('FAssets');
    }
}

class FAsset{}

I want to display all the asset grouped by Departments. I tryied to do something like:

@foreach($dependencias as $dep)
    <tr>
         <td colspan="8" style="width:100%">Dependencia: {{ $dep->code }} {{ $dep->description }}</td>
    </tr>
@foreach($dep->coordinations()->sites()->assets()->get() as $asset)
...

But I got the "Method [sites] is not defined on the Query class" error. I was looking for the eager loading way but I dont see how it could work with an extra level on the relationships.

Also, I was considering to querying all the assets and filtering the assets given the actual coordination, but I think that this is going to take a lot of time to load...

Thanks in advance

Answer 1

class Deparment{
public function department_assets(){
    $assets = array();

    foreach($this->has_many('Coordination')->get() as $coordination){
            foreach($coordination->sites()->get() as $site){
                foreach($site->assets() as $asset)
                {
                    $assets[] = $asset;
                }
            }
        }

    return $assets;
    }
}

Now we can...

@foreach($dep->department_assets() as $asset)