Laravel 8 Model Observers Tutorial Example

In this tutorial you will learn about the Laravel 8 Model Observers Tutorial Example and its application with practical example.

In this Laravel 8 Model Observers Tutorial Example tutorial I will show you how model observers works and how to use model observers in larave 8. In this tutorial you will learn to use model observers in laravel 8. In this article I will help you understand how to use laravel 8 model observers.  I will also show you what is observers in laravel 8. I will also share simple example of laravel 8 model observers. We will also be creating basic example of events and observers in laravel 8.

Laravel Model Observers

When you want to listen multiple events on a given model then you can use observers to group all of your listeners into a single class. Laravel Observers are simple classes with method names that reflect the Eloquent events you wish to listen for. Each of these methods receives the model as their only argument. Laravel Observers will listen event for model like create, update and delete.

In this step by step tutorial you will understand Laravel 8 Model Observers with example.

Laravel Eloquent Hook

  • Retrieved: after a record has been retrieved.
  • Creating: before a record has been created.
  • Created: after a record has been created.
  • Updating: before a record is updated.
  • Updated: after a record has been updated.
  • Saving: before a record is saved (either created orupdated).
  • Saved: after a record has been saved (either created orupdated).
  • Deleting: before a record is deleted or soft-deleted.
  • Deleted: after a record has been deleted or soft-deleted.
  • Restoring: before a soft-deleted record is going to berestored.
  • Restored: after a soft-deleted record has been restored.

Support we have a product model with name, slug, price and unique_id column. Now when I create one record with name an price only I want to generate slug from name and auto generate unique_id. Let’s see how to Model observers class will works:

app/Models/Product.php

Now, lets create observers class for Product model using following artisan command:

app/Observers/ProductObserver.php

Now, we need to register observers class in provider.

app/Providers/EventServiceProvider.php

Create Demo Route

we need to define routes in “routes/web.php” file. Lets open “routes/web.php” file and add the following routes in it.

routes/web.php

Create Controller:

Now, lets create a controller named ProductController using command given below –

Once the above command executed, it will create a controller file ProductController.php in app/Http/Controllers/ directory. Open the ProductController.php file and put the following code in it.

app/Http/Controllers/ProductController.php

In this tutorial we have learn about the Laravel 8 Model Observers Tutorial Example and its application with practical example. I hope you will like this tutorial.