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Inside this article we will see the use of merge() and all() methods in laravel 9 collections. Article contains a very classified information about the basic concept of How to merge Eloquents in laravel 9 collection.

We will merge collections in laravel and also will see how to merge laravel eloquents.

The Illuminate\Support\Collection class provides a fluent, convenient wrapper for working with arrays of data. For example, check out the following code. We’ll use the collect helper to create a new collection instance from the array.

As mentioned above, the collect helper returns a new Illuminate\Support\Collection instance for the given array.

So, creating a collection is as simple as:

$collection = collect([1, 2, 3]);

Learn More –

Let’s get started.

Laravel Installation

Open terminal and run this command to create a laravel project.

composer create-project laravel/laravel myblog

It will create a project folder with name myblog inside your local system.

To start the development server of laravel –

php artisan serve

URL: http://127.0.0.1:8000

Assuming laravel already installed inside your system.

Method #1 Use merge() Method

We will see how to use merge() into collection.

Suppose we have SiteController.php a controller file inside /app/Http/Controllers folder.

Code Example #1 – Merge Collection with Values

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SiteController extends Controller
{
    public function index()
    {
        $collection1 = collect([1, 2, 3]);
        $collection2 = collect([4, 5]);

        $mergedCollection = $collection1->merge($collection2);

        $mergedCollection->all();

        dd($mergedCollection);
    }
}

Concept

$mergedCollection = $collection1->merge($collection2);

$mergedCollection->all();

Output

Code Example #2 – Merge Collection with Unique Values

Here,

Suppose we have two collections, but few elements of collections are duplicate. Now, let’s see how to merge unique values only.

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SiteController extends Controller
{
    public function index()
    {
        $collection1 = collect([1, 2, 3, 4]);
        $collection2 = collect([4, 5, 5, 6, 7]);

        $mergedCollection = $collection1->merge($collection2);

        $mergedCollection = $mergedCollection->unique(function ($item) {
            return $item;
        });

        $mergedCollection->all();

        dd($mergedCollection);
    }
}

Concept

$mergedCollection = $mergedCollection->unique(function ($item) {
     return $item;
});

Output

Method #2 Merge Eloquent Collection

In this example we will see how to merge laravel eloquents.

Let’s say we have two models – Product & Seller

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Product;
use App\Models\Seller;

class SiteController extends Controller
{
    public function index()
    {
        $collection1 = Product::get();
        $collection2 = Seller::get();

        $mergedCollection = $collection1->merge($collection2);

        $mergedCollection->all();

        dd($mergedCollection);
    }
}

We hope this article helped you to How to Merge Eloquents in Laravel 9 Collection Tutorial in a very detailed way.

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