Laravel Advanced Interview Questions
Laravel Advanced Interview Questions: A Comprehensive List for Job Seekers
Laravel is an open-source PHP framework used for web application development. In advanced Laravel interview questions, candidates are expected to have a strong understanding of the framework's core concepts, such as routing, middleware, migrations, and relationships. They should also be familiar with advanced features like queues, event broadcasting, and caching. Employers may ask about advanced topics like database optimization, authentication, and performance tuning. Candidates should also be able to demonstrate their problem-solving skills and ability to troubleshoot common issues that may arise when working with Laravel. Clear communication and a solid understanding of PHP and object-oriented programming principles are also essential for answering advanced Laravel interview questions.
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1 - What is the difference between route and middleware in Laravel?
Routes are responsible for mapping URLs to specific controllers and actions, while middleware provides a convenient mechanism for filtering HTTP requests and responses entering your application.
2) How do you define a route in Laravel?
You can define a route in Laravel using the `Route` facade, which has methods such as `get()`, `post()`, `put()`, `patch()`, `delete()` etc. to define different types of routes. For example, `Route::get('/', ‘HomeController@index’)` will map the root URL to the index method of the HomeController.
3) What is a service container in Laravel?
The service container is the most important part of the Laravel framework. It serves as a central repository for managing and resolving dependencies within your application. The container is responsible for creating instances of objects and injecting them into classes that require them.
4) How do you define a relationship in Laravel Eloquent?
You can define relationships between models in Laravel Eloquent by using methods such as `hasOne()`, `hasMany()`, `belongsTo()`, `belongsToMany()` etc. Each method takes the related model as an argument and defines the type of relationship.
5) What is route caching in Laravel?
Route caching speeds up the performance of your application by creating a cached copy of your application's routes. This cache file is automatically loaded by the framework on subsequent requests, resulting in faster route registration.
6) How do you define a middleware in Laravel?
You can define a middleware in Laravel by creating a new class and implementing the `handle()` method. The handle method receives a request and a closure as arguments and performs logic before and after the request is handled.
7) What are Laravel collections?
Laravel collections are a powerful class that provides an array like way of manipulating and filtering results from a database query. Collections extend the PHP `ArrayObject` class and provide methods such as `filter()`, `map()`, `pluck()` etc. to easily manipulate data.
8) How do you handle errors and exceptions in Laravel?
Laravel provides a unified API for handling errors and exceptions through the `Handler` class. You can customize how errors and exceptions are handled by modifying the `app/Exceptions/Handler.php` file.
9) What are middleware groups in Laravel?
Middleware groups allow you to group multiple middleware classes together and apply them to routes or controllers using a single name. This helps in managing and organizing your middleware more efficiently.
10) How do you define macros in Laravel?
Macros provide a way to add additional functionality to Laravel's core classes. You can define a macro in the `boot()` method of your service provider by using the `macro()` method.
11) What is the difference between soft and hard deletes in Laravel?
Soft deletes are a way of marking records as “deleted” without actually removing them from the database. On the other hand, hard deletes permanently remove records from the database.
12) How do you define accessors and mutators in Laravel Eloquent?
Accessors are getters that allow you to manipulate data before it is retrieved from the database, while mutators allow you to manipulate data before it is saved to the database. You can define these methods in your Eloquent model using the `get{attribute}Attribute()` and `set{attribute}Attribute()` conventions.
13) What are the different types of relationships supported by Laravel?
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Laravel Eloquent supports four types of relationships one to one, one to many, many to one, and many to many. These relationships can be easily defined and managed using Eloquent methods and conventions.
14) What is the purpose of Laravel helper functions?
Laravel provides a set of helper functions that allow you to perform common tasks, such as generating URLs, retrieving data from the request, formatting strings, and more. These helper functions are globally available within your Laravel application.
15) What is a queued job in Laravel?
Queued jobs allow you to defer the processing of a time consuming task to a later time, freeing up your application to process other requests. You can define queued jobs in Laravel using the `artisan` command `make:job JobName` and dispatch them using the `dispatch()` method.
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