Laravel 8 Model Observers Example Tutorial

Published on : March 10,2023

Model Observers allow you to listen for specific events that occur on a model, such as when a model is saved, updated, or deleted. This allows you to execute code before or after the event, without cluttering your model with extra code. Here's an example tutorial for implementing Model Observers in Laravel 8:

Step 1: Create an Observer Class

First, you'll need to create an Observer class for the model you want to observe. You can generate this class using the php artisan make:observer command. For example, to create an observer for the User model, run the following command:

php artisan make:observer UserObserver --model=User

This will generate a UserObserver class in the App/Observers directory.

Step 2: Define the Events to Observe

In the Observer class, you can define which events you want to observe by implementing the relevant methods. For example, if you want to execute some code after a user is created, you can define the created method in the UserObserver class:

<?php

namespace App\Observers;

use App\Models\User;

class UserObserver
{
    /**
     * Handle the User "created" event.
     *
     * @param  \App\Models\User  $user
     * @return void
     */
    public function created(User $user)
    {
        // Execute code here
    }
}

Similarly, you can define other methods such as updating, updated, deleting, deleted, saving, and saved.

Step 3: Register the Observer

To register the Observer, you need to tell Laravel which model to observe and which Observer class to use. You can do this in the boot method of the AppServiceProvider class:

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use App\Models\User;
use App\Observers\UserObserver;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        User::observe(UserObserver::class);
    }
}

Now, whenever a user model is saved, updated, or deleted, the code in the UserObserver class will be executed accordingly.

That's it! You've successfully implemented Model Observers in Laravel 8.

Categories : Laravel

Tags : Laravel Laravel 8 Model Observers Event Listeners Eloquent Models CRUD operations web development PHP Framework

Abhay Dudhatra

I am a full-stack developer who is passionate about creating innovative solutions that solve real-world problems. With expertise in technologies such as PHP, Laravel, Angular, Vue, Node, Javascript, JQuery, Codeigniter, and Bootstrap, I love to share my knowledge and help others in the industry through writing tutorials and providing tips. Consistency and hard work are my mantras, and I constantly strive to improve my skills and stay up-to-date with the latest advancements in the field. As the owner of Open Code Solution, I am committed to providing high-quality services to my clients and helping them achieve their business objectives.