How to Generate Unique Slug in Laravel 9 Tutorial

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Inside this article we will see the concept of generate unique slug in laravel 9. It will be very easy to get the concept and implement in laravel 9 application.

We can use this same concept of slug generation with other versions of laravel as well. Inside this tutorial also we will understand how to generate unique slug in laravel using eloquent model events.

This concept is useful when you do insertion of same row but you want slug should be different. Then this concept will help you for this.

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.

Create Database & Connect

To create a database, either we can create via Manual tool of PhpMyadmin or by means of a mysql command.

CREATE DATABASE laravel_app;

To connect database with application, Open .env file from application root. Search for DB_ and update your details.

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=laravel_app
DB_USERNAME=root
DB_PASSWORD=root

Create Model & Migration

Open project into terminal and run this command to create model and migration file.

Model file is one which helps application to communicate with database table and migration file creates schema of table.

$ php artisan make:model Product -m

This command create two different files – a Model file and a Migration file. -m is for migration file.

  • Proudct.php model file inside /app/Models folder.
  • 2022_03_15_030914_create_products_table.php Migration file inside /database/migrations.

Open {timestamp}_create_products_table.php migration file and write this update code.

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('products', function (Blueprint $table) {
            $table->id();
            $table->string("name", 70);
            $table->string("slug", 100)->nullable();
            $table->text("description")->nullable();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('products');
    }
};

Run Migration

Back to terminal and run this artisan migrate command to run migrations.

$ php artisan migrate

Table: products

Open Product.php from /app/Models folder and write this following code into it.

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Str;

class Product extends Model
{
    use HasFactory;

    protected $fillable = [
        'name', 'slug', 'description'
    ];

    public $timestamps = false;

    /**

     * Boot the model.

     */

    protected static function boot()
    {
        parent::boot();

        static::created(function ($product) {

            $product->slug = $product->createSlug($product->name);

            $product->save();
        });
    }

    /** 
     * Write code on Method
     *
     * @return response()
     */
    private function createSlug($name)
    {
        if (static::whereSlug($slug = Str::slug($name))->exists()) {

            $max = static::whereName($name)->latest('id')->skip(1)->value('slug');

            if (isset($max[-1]) && is_numeric($max[-1])) {

                return preg_replace_callback('/(\d+)$/', function ($mathces) {

                    return $mathces[1] + 1;
                }, $max);
            }
            return "{$slug}-2";
        }
        return $slug;
    }
}


whereSlug is dynamic method created from the name of column. where{ColumnName}. whereName() is for name column.

Here,

We are checking that slug should be unique of every inserted product.

Examples for some slug

laravel-9-product-upload

laravel-9-product-upload-2

laravel-9-product-upload-3

laravel-9-product-upload-4

Create Controller

Back to terminal and run this artisan command

$ php artisan make:controller ProductController

It will create a file ProductController.php inside /app/Http/Controllers folder.

Open controller file and write this code into it.

<?php

namespace App\Http\Controllers;

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

class ProductController extends Controller
{
    public function addProduct()
    {
        $product = Product::create([
            "name" => "Laravel 9 Sample Product",
            "description" => "Sample data"
        ]);

        dd($product);
    }
}
  • Create & Save product into database table “products”.
  • Automatically the boot method what we have created in Product model will be used. We have used the concept of model event static::created
  • Product::create(), we have passed name and description value and also slug value automatically comes from model and will insert into table.

Add Route

Open web.php from /routes folder. Add this route into it.

//...
use App\Http\Controllers\ProductController;

Route::get('product', [ProductController::class, 'addProduct']);

//...

Application Testing

Open project to terminal and type the command to start development server

$ php artisan serve

URL – http://127.0.0.1:8000/product

When you hit this url multiple times, it will insert new product rows inside products table. One thing we can notice is here about generated slug value. It is unique for all rows.

We hope this article helped you to learn about Generate Unique Slug in Laravel 9 in a very detailed way.

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