php - How to get category a product belongs to - Laravel 6

Question

I am fetching products and in the response, i want the category it belongs to to appear in the response. When i log the response, it looks like the below

Response

 [{"items_receive":"280","category":null},`{"items_receive":"100","category":null}]`  

Product.php

public function category()
{
    return $this->belongsTo(Category::class);
}

 public function getSummary()
    {
        return Product::with('category')->selectRaw('SUM(items_receive) as 
         items_total)
                ->where('user_id',Auth::user()->id)
                ->groupBy('category_id')
                ->get();
    }

Category.php

 public function products()
    {
        return $this->hasMany(Product::class);
    }

Controller.php

 public function index(Product $product)
 {
       $product->getSummary(); 
 }

question from:https://stackoverflow.com/questions/66050665/how-to-get-category-a-product-belongs-to-laravel-6

Answer 1

Since relationships are lazy loaded for performance reasons, you have to explicitely ask for them, aka eager loading:

Product::with('category')->all();

Related Laravel documentation page