Laravel withSum() with Where Condition Example

Hi Developer,

This is a short guide on laravel withsum with condition. you will learn laravel withsum where condition. We will look at an example of laravel withsum condition. This post will give you a simple example of laravel relationship withSum with condition. Alright, let us dive into the details.

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

you can easily use withSum() 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', 'is_active'
    ];
}

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] => 30
        )
    [1] => Array
        (
            [id] => 2
            [name] => Laptop
            [products_sum_price] => 20
        )
)

withSum() with Where Condition Example:

<?php
  
namespace App\Http\Controllers;
  
use App\Models\Category;
  
class SignaturePadController extends Controller
{
    /**
     * Write code on Method
     *
     * @return response()
     */
    public function index()
    {
        $categories = Category::select("id", "name")
                        ->withSum([
                            'products' => function ($query) { 
                                $query->where('is_active', '1');
                            }], 'price')
                        ->get()
                        ->toArray();
 
        dd($categories);
    }
}

Output:

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => Mobile
            [products_sum_price] => 20
        )
    [1] => Array
        (
            [id] => 2
            [name] => Laptop
            [products_sum_price] => 20
        )
)

I hope it can help you...