20 Laravel REST API Interview Questions and Answers

Laravel is a popular PHP framework for developing web applications. Its REST API feature allows developers to create APIs that can be used by other applications to access data. When applying for a position that involves working with Laravel, it is important to be prepared to answer questions about its REST API feature. In this article, we discuss the most commonly asked questions about Laravel’s REST API and how you should answer them.

Laravel REST API Interview Questions and Answers

Here are 20 commonly asked Laravel REST API interview questions and answers to prepare you for your interview:

1. What is Laravel?

Laravel is a free, open source PHP web application framework.

2. How does the Laravel framework work?

Laravel is a web application framework with expressive, elegant syntax. We believe development must be an enjoyable, creative experience to be truly fulfilling. Laravel takes the pain out of development by easing common tasks used in many web projects, such as:

– Routing
– Sessions
– Caching
– Database abstraction
– Authentication
– Templating

Laravel aims to make the development process a pleasing one for the developer without sacrificing application functionality. Happy developers make the best code. To this end, we’ve attempted to combine the very best of what we have seen in other web frameworks, including frameworks implemented in other languages, such as Ruby on Rails, ASP.NET MVC, and Sinatra.

3. What are some of the key features of Laravel?

Some of the key features of Laravel include its expressive syntax, powerful routing features, and built-in support for unit testing. Laravel also offers a number of other features such as its Eloquent ORM for working with databases, and its Blade templating engine.

4. What do you understand about MVC in context with web development?

MVC is a software design pattern that stands for Model-View-Controller. It is a way of organizing code so that the data (model), the presentation of the data (view), and the logic that controls the data (controller) are all separate. This makes code more modular and easier to maintain. In the context of web development, MVC is often used to build RESTful web services.

5. What’s the difference between CodeIgniter and Laravel?

CodeIgniter is a lightweight framework while Laravel is a full-stack framework. CodeIgniter does not have built-in support for user authentication and authorization, while Laravel does. Laravel also has a number of additional features, such as the Eloquent ORM, that are not found in CodeIgniter.

6. Can you explain what REST (Representational State Transfer) APIs are?

REST APIs are web services that use the HTTP protocol to allow communication between different systems. They are often used to provide an interface for third-party applications to access data and functionality from a web application.

7. What do you understand by the term routing in Laravel?

Routing is the process of matching a URL to an appropriate controller action. In Laravel, all routes are defined in the routes.php file, which is located in the app/Http/routes.php.

8. What are the types of routes available in Laravel?

Laravel offers four types of routes: Basic, GET, POST, and PUT/PATCH. Basic routes are those that are defined in the routes/web.php file. GET routes are used for retrieving data from a resource, while POST routes are used for creating or updating a resource. PUT/PATCH routes are used for updating an existing resource.

9. Is it possible to create a custom route in Laravel? If yes, then how?

Yes, it is possible to create a custom route in Laravel. You can do this by using the Route::get() method.

10. Why should I use Laravel instead of another PHP framework or CMS like Symfony, Zend, Yii, CakePHP, Joomla, Drupal, etc.?

Laravel has a number of advantages over other PHP frameworks and CMSs. First, Laravel is designed with developer productivity in mind. It includes features like an expressive syntax, built-in tooling, and an ecosystem of third-party libraries that can make development faster and easier. Second, Laravel is scalable and extensible, making it a good choice for large-scale applications. Finally, Laravel has excellent documentation, making it easy to get started with and learn.

11. How do you access URL parameters from within a view page in Laravel?

You can access URL parameters from within a view page in Laravel by using the $request object.

12. What do you mean by dependency injection in Laravel?

Dependency injection is a technique used to resolve dependencies between objects and services. In Laravel, dependency injection is used to resolve dependencies between services and controllers. This ensures that your application is loosely coupled and can be easily tested.

13. How can we make a request to a third-party API using Laravel?

We can make a request to a third-party API using Laravel by using the Guzzle HTTP client. Guzzle is a PHP library that makes it easy to make HTTP requests. We can use Guzzle to make a request to a third-party API and then process the response.

14. What are the main principles behind Object Oriented Programming?

The main principles of Object Oriented Programming are encapsulation, abstraction, and inheritance. Encapsulation is the idea of hiding data and functionality inside of an object, so that only the object itself can access and manipulate it. Abstraction is the idea of representing complex data and functionality in a simplified way. Inheritance is the idea of one object being able to inherit the data and functionality of another object.

15. Can you explain what Model View Controller is?

Model View Controller, or MVC, is an architectural design pattern that separates an application into three main components: the model, the view, and the controller. The model represents the data of the application, the view is responsible for displaying that data to the user, and the controller handles user input and updates the model accordingly. This separation of concerns makes MVC applications easier to develop and maintain.

16. How do you debug an application built on top of the Laravel framework?

Laravel provides a number of tools to help with debugging, including the Laravel Debugbar and the Laravel Telescope.

17. Can you explain what composer is used for in the context of Laravel?

Composer is a dependency manager for PHP that allows you to declare the libraries your project depends on and installs them for you. In the context of Laravel, it is used to manage all of the dependencies for your Laravel project.

18. What are migrations in Laravel?

Migrations are a way to change your database schema over time, while keeping track of the changes in a version control system. This way, you can easily revert back to previous versions of your database if necessary.

19. What is an Eloquent model?

An Eloquent model is an object-oriented PHP class that is designed to represent a database table. Eloquent makes it easy to work with your database by providing a simple, fluent interface for interacting with it.

20. What is CRUD? What are the different operations that fall under this category?

CRUD stands for Create, Read, Update, and Delete. These are the four operations that are typically performed on data in a database. Create refers to inserting new data into the database. Read refers to retrieving data from the database. Update refers to modifying existing data in the database. Delete refers to removing data from the database.