While it starts simple enough, Laravel development can get complicated quite quickly. That’s when you need a dedicated Laravel developer. The right expert can handle application scaling, performance, and evolution.
But of course, resumes and portfolios aren’t enough to judge a developer’s technical capabilities. The strongest filter is a one-on-one interview to spot real expertise, validate hands-on experience, and assess their workflow collaboration.
This blog explores potential interview questions to ask when trying to hire Laravel developers. We’ll also give you the plausible answers you can consider from the candidate. Let’s get straight into it.
Q.1) What are the core features of Laravel?
Laravel offers a range of advanced PHP-based features, but a few of the key ones include:
- Blade templating engine: It helps build dynamic views with a lightweight yet efficient template system.
- MVC architecture: It keeps the applications maintainable and structured by separating logic, data, and presentation.
- Built-in authentication and authorization: Laravel offers you ready-to-use tools and packages for managing user permissions, login, and security.
- Eloquent ORM for database management: It uses expressive, model-based queries to simplify database interactions.
- Route and middleware management: This feature of Laravel controls request flow and adds logic like logging and authentication.
- Queue and event broadcasting system: With it, you can boost app performance and responsiveness by handling background jobs and real-time events.
(A developer should be able to explain each of these features in detail. They are key to building websites using Laravel.)
Q.2) What is Laravel Eloquent?
Eloquent is Laravel’s built-in ORM (Object-Relational Mapping) system. With it, you can easily interact with your database using simple, intuitive PHP objects and methods. You won’t have to write SQL queries.
Q.3) What is MVC architecture? How does Laravel implement it?
MVC, or Model-View-Controller separates an application’s logic, UI, and data.
- Model: It represents your business logic and data (like an Eloquent model such as User.php).
- View: It represents the UI (like a Blade template such as welcome.blade.php).
- Controller: It processes data using the Model, handles user requests, and returns a View.
(Another acceptable answer is: Routes send requests to Controllers. It uses Models to get data and then pass that data to Views.)
Q.4) What’s the role of the .env file in Laravel?
.env is a configuration file. It stores environment-specific variables, like API keys, database credentials, and app settings. With it, you can keep sensitive info out of the codebase and try varied configurations in development, testing, and production.
Q.5) How to implement dependency injection in Laravel?
Laravel offers a Service Container to resolve and inject dependencies automatically. You can “type-hint” a dependency in a constructor or method, and Laravel will provide it.
//Laravel will automatically create a UserRepository instance.
Public function _construct(UserRepository $users) {
$this->users = $users;
}
(It’s a plus if the developer can explain this code snippet.)
Q.6) What is middleware in Laravel?
Middleware acts as a filter for HTTP requests. It helps perform tasks before or after a request is handled by your application. Like, authenticating users, checking for CSRF tokens, or logging.
Q.7) How can you create resource controllers?
Use the Artisan command:
php artisan make:controller PhotoController –resource
This creates a controller with predefined methods for create, show, index, store, update, edit, and destroy actions.
Q.8) How does Laravel handle database migrations?
Migrations are like version control for your database schema. These PHP files let you define and share your database table structure. Artisan commands can help create and modify tables:
- php artisan migrate
- php artisan migrate:rollback
Q.9) How to define routes in Laravel?
Routes are defined in the directory/routes files (like web.php and api.php).
// Basic route
Route::get(‘/home’, function () { return view(‘home’); });
// Route to a Controller method
Route::get(‘/user’, [UserController::class, ‘index’]);
//Resource route for a resource controller
Route::resource(‘photos’, PhotoController::class);
Q.10) How does Laravel handle CSRF protection?
Laravel automatically generates a CSRF token for each active user session. This token is verified on every non-GET request (like POST, PUT, and DELETE). It’s typically included as a hidden field in HTML forms or as a meta tag for JavaScript frameworks.
Q.11) What’s the purpose of the artisan command-line tool?
Artisan is Laravel’s command-line interface. It provides many helpful commands for common tasks like generating code (controllers, models, migrations). With it, you can also run migrations, clear caches, and run custom scripts.
Q.12) What’s the role of API resources in Laravel?
API resources like php artisan make:resource UserResource transform your Eloquent models and their relationships into JSON arrays. They give you a consistent way to format your API responses.
Q.13) What is the difference between the GET and POST methods?
GET is used to request data from a server. Parameters are visible in the URL. You should not use it for sensitive data or actions changing state.
POST, however, is used to send data to a server to create or update a resource. Data is sent in the request body, not the URL.
Q.14) What is the default session timeout duration?
The default session duration is 120 minutes (2 hours). It’s defined in the configuration file, i.e. config/session.php.
Q.15) List a few common Laravel Artisan commands.
Common Laravel Artisan commands include:
- php artisan make:model ModelName
- php artisan make:controller ControllerName
- php artisan make:migration create_table_name
- php artisan migration
- php artisan route:list
- php artisan cache:clear
- php artisan tinker
Q.16) How does Laravel handle errors and exceptions?
Laravel uses the class Handler (in the file app/Exceptions/Handler.php) to manage all exceptions. It shows detailed error stacks in debug mode. And in production, you can configure it to show friendly error pages and log exceptions for review.
Q.17) List some popular Laravel packages you have worked with.
Some of the most common and highlight-recommended Laravel packages.
- Laravel Sanctum/Passport: For API authentication
- Laravel Telescope: A powerful debug assistant.
- Laravel Horizon: For managing Redis queues.
- Laravel Socialite: For OAuth authentication with social providers.
- Spatie Laravel-Permission: For role-based permissions.
Q.18) How can you enable query log in Laravel?
You can enable it to see all SQL queries executed during a request.
DB::enableQueryLog();
// Run some queries
$queries = DB::getQueryLog();
dd($queries); // To see the log
A thorough interview is the most important part of hiring IT professionals like Laravel developers. So consider these and more questions and see if the developer has a deep understanding of Laravel, its commands, packages, and tools.And if you need professional help with the recruitment, contact Apollo Technical today!
