Code Explainers

Laravel code explainers

php 
<?php
 
namespace App\Services\Checkout;
 

Validating coupons with Laravel's Pipeline

pipeline chain of responsibility transactions
Intermediate 7 steps
php 
<?php
 
namespace App\Services;
 

Building a cached daily leaderboard in Laravel

caching aggregation eager-loading
Intermediate 9 steps
php 
class TwoFactorController extends Controller
{
    public function show(Request $request): View|RedirectResponse
    {

Two-factor auth challenge flow in Laravel

authentication two-factor middleware
Intermediate 10 steps
php 
<?php
 
namespace App\Models;
 

Storing JSON preferences in a Laravel model

eloquent casting json
Intermediate 7 steps
php 
<?php
 
namespace App\Services;
 

A cached settings service in Laravel

caching memoization cache-invalidation
Intermediate 8 steps
php 
<?php
 
namespace App\Reports;
 

Bucketing spending by time period in Laravel

aggregation date-bucketing collections
Intermediate 9 steps
php 
<?php
 
namespace App\Http\Controllers;
 

Conditional query building in Laravel

query-builder conditional-logic closures
Intermediate 7 steps
php 
<?php
 
namespace App\Notifications;
 

Delayed, self-cancelling emails in Laravel

queues notifications delayed-jobs
Intermediate 7 steps
php 
<?php
 
namespace App\Http\Controllers;
 

Serving cached translations from a Laravel controller

http-caching etag localization
Intermediate 8 steps
php 
<?php
 
namespace App\Services;
 

Validating coupons before applying a discount in Laravel

validation guard clauses business rules
Intermediate 7 steps
php 
<?php
 
namespace App\Services\Analytics;
 

Building a signup chart with Laravel's query builder

aggregation date-ranges query-builder
Intermediate 6 steps
php 
<?php
 
namespace App\Http\Controllers;
 

Processing refunds safely in Laravel

dependency injection validation database transactions
Intermediate 8 steps
php 
<?php
 
namespace App\Models;
 

Auto-generating unique slugs in Laravel

eloquent model-events slugs
Intermediate 8 steps
php 
namespace App\Console\Commands;
 
use App\Models\Region;
use App\Services\ReportBuilder;

How a Laravel command warms report caches

caching cache-warming artisan-command
Intermediate 5 steps
php 
class Cart extends Model
{
    protected $fillable = ['user_id'];
 

Modeling a shopping cart in Laravel

eloquent relationships domain-model
Intermediate 7 steps
php 
<?php
 
namespace App\Services;
 

Throttling login attempts in Laravel

rate-limiting authentication security
Intermediate 6 steps
php 
<?php
 
namespace App\Http\Requests;
 

Validating nested order payloads in Laravel

validation authorization nested-data
Intermediate 8 steps
php 
<?php
 
namespace App\Http\Middleware;
 

A scheduled maintenance-window middleware in Laravel

middleware caching http-responses
Intermediate 7 steps