LARAVEL Case Studies & Practical Application 2

Question 1

A SaaS app needs to send welcome emails, generate a PDF invoice, and notify a Slack channel after a user registers. Which Laravel feature best handles this as a single, clean unit?

Accepted Answer

Queued event listeners on a RegisteredUser event

Answer

Dispatching a RegisteredUser event with multiple queued listeners decouples each side-effect and processes them asynchronously.

Question 2

Your e-commerce site must apply a 10% discount for logged-in users and a 5% discount for guests. Where is the most maintainable place to centralize this pricing logic in Laravel?

Accepted Answer

A dedicated PricingService class injected via the service container

Answer

A PricingService encapsulates business rules, is easily testable, and can be swapped via interface binding.

Question 3

An API endpoint receives bulk product imports (up to 10,000 rows via CSV). The upload times out at 30 seconds. What is the correct Laravel approach?

Accepted Answer

Queue a job that chunks and processes rows in the background, returning a job ID immediately

Answer

Offloading to a queued job returns a fast HTTP response while background workers handle processing without timeout risk.

Question 4

A multi-tenant Laravel app stores each tenant's data in a separate database. How should you switch the database connection per request without modifying config files on disk?

Accepted Answer

Resolve the DB manager and call DB::purge() then set config(['database.connections.tenant.database' => $db]) at runtime

Answer

Purging and reconfiguring the connection at runtime via config() allows dynamic database switching without disk writes.

Question 5

You need to expose a REST API where unauthenticated users can read resources but only authenticated users can write. Which middleware setup achieves this cleanly in a resource controller?

Accepted Answer

Apply auth middleware only to store, update, and destroy methods using $this->middleware('auth')->only([...])

Answer

Scoping middleware to specific methods with only() lets index and show remain public while write actions require authentication.

LARAVEL - Laravel PHP Framework Practice Test

LARAVEL - Laravel PHP Framework Practice Test

LARAVEL Case Studies & Practical Application 2