Laravel Eloquent withSum() and withCount() Example

Hi All,

This article will provide some of the most important example laravel eloquent withsum. i explained simply step by step laravel eloquent withcount. step by step explain laravel withSum() example. you will learn laravel withCount() example.

Here i will give you very simple example of how to use withSum() and withCount() with laravel relationship eloquent. we will create Category and Product and how you can add relationship and get it.

you can easily use withSum() and withCount() with laravel 6, laravel 7, laravel 8, laravel 9, laravel 10 and laravel 11 version.

Let's see example with output:

Category Model:

<?php
  
namespace App\Models;
  
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
  
class Category extends Model
{
    use HasFactory;
  
    /**
     * Get the comments for the blog post.
     */
    public function products()
    {
        return $this->hasMany(Product::class);
    }
}

Product Model:

<?php
  
namespace App\Models;
 
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
  
class Product extends Model
{
    use HasFactory;
  
    protected $fillable = [
        'name', 'price'
    ];
}

withSum() Example:

<?php
  
namespace App\Http\Controllers;
  
use App\Models\Category;
  
class SignaturePadController extends Controller
{
    /**
     * Write code on Method
     *
     * @return response()
     */
    public function index()
    {
        $categories = Category::select("id", "name")
                        ->withSum('products', 'price')
                        ->get()
                        ->toArray();
 
        dd($categories);
    }
}

Output:

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => Mobile
            [products_sum_price] => 330
        )
    [1] => Array
        (
            [id] => 2
            [name] => Laptop
            [products_sum_price] => 410
        )
)

withCount() Example:

<?php
  
namespace App\Http\Controllers;
  
use App\Models\Category;
  
class SignaturePadController extends Controller
{
    /**
     * Write code on Method
     *
     * @return response()
     */
    public function index()
    {
        $categories = Category::select("id", "name")
                        ->withCount('products')
                        ->get()
                        ->toArray();
 
        dd($categories);
    }
}

Output:

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => Mobile
            [products_count] => 3
        )
    [1] => Array
        (
            [id] => 2
            [name] => Laptop
            [products_count] => 2
        )
)

I hope it can help you...