Laravel Model nested query

I was trying to write a single query to get full users diet from database. The problem is that I am not able to get data from the diet_food table. Here are my tables:

• diet_settings (id, total_days, etc). The basic information about the users diet.
• eating_types (id, diet_id, eating_time, etc). Information about breakfast, lunch etc.
• diet_food (id, eating_type_id, product, etc). Food related to each eating type.

This is the query that I use in my controller class:

$diet = Diet::with("eatingType.dietFood")->get()->find($id)->toArray();

So when I use var_dump() this is what it looks like:

array (size=7)
'id' => int 2
'user_id' => int 1
'total_days' => int 1
'total_eating' => int 6
'notes' => string '' (length=0)
'created' => string '2016-09-01' (length=10)
'eating_type' => 
    array (size=3)
      0 => 
         array (size=6)
           'id' => int 7
           'diet_id' => int 2
           'eating_time' => string '8:00' (length=4)
           'eating_type' => string 'Breakfast' (length=10)
           'recommended_rate' => int 0
           'diet_food' => 
               array (size=0)
                   ...
      1 => 
        array (size=6)
          'id' => int 8
          'diet_id' => int 2
          'eating_time' => string '12:00' (length=5)
          'eating_type' => string 'Lunch' (length=14)
          'recommended_rate' => int 0
          'diet_food' => 
              array (size=0)
                 ... 

In the array the diet_food is empty even though I have data stored in the datababase.

Diet Model

class Diet extends Model
{
    public $table = "diet_settings";
    public $timestamps = false;

    public function eatingType(){
        return $this->hasMany(EatingType::class);
    }
}

EatingType Model

class EatingType extends Model
{
    public $timestamps = false;
    public $table = "eating_types";

    public function dietFood(){
        return $this->hasMany(DietFood::class, 'id','eating_type_id');
    }
    public function diet(){
        return $this->belongsTo(Diet::class);
    }
}

DietFood Model

class DietFood extends Model
{
    public $timestamps = false;
    public $table = "diet_food";

    public function eatingType(){
        return $this->belongsTo(EatingType::class);
    }
}

via Chebli Mohamed