ClearBowl/api/app/Models/Recipe.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use App\Helpers\NutritionCalculator;

class Recipe extends Model
{
    protected $guarded = ['id'];

    protected $with = ['steps', 'ingredients'];

    protected $hidden = ['created_at', 'updated_at'];

    protected $appends = ['nutrition'];

    public function steps()
    {
        return $this->hasMany(RecipeStep::class);
    }

    public function ingredients()
    {
        return $this->hasMany(RecipeProduct::class);
    }

    public function getNutritionAttribute()
    {
        return NutritionCalculator::calculateNutritionForProducts($this->ingredients);
    }
}