Carriers - TALL Stack E-commerce Framework

Carriers represent shipping providers and their delivery options. Shopper uses a two-level structure with carriers (the shipping company) and carrier options (specific delivery methods with prices per zone). Shopper provides a flexible shipping system that supports both manual rate configuration and real-time API integration with major carriers like UPS, FedEx, and USPS.

Models

Shopper uses two models to manage shipping:

Model	Purpose
`Shopper\Core\Models\Carrier`	The shipping provider (UPS, FedEx, local delivery)
`Shopper\Core\Models\CarrierOption`	Specific delivery methods with pricing per zone

The Carrier model implements Shopper\Core\Models\Contracts\Carrier and uses the HasSlug and HasZones traits. It is not configurable via config/shopper/models.php.

Database Schema

Carrier Table

Column	Type	Nullable	Default	Description
`id`	bigint	no	auto	Primary key
`name`	string	no	-	Carrier name
`slug`	string	yes	auto	URL-friendly identifier (unique)
`driver`	string	yes	null	Shipping driver code (ups, fedex, usps, or null for manual)
`link_url`	string	yes	null	Carrier website URL
`description`	string	yes	null	Carrier description
`shipping_amount`	integer	yes	null	Default shipping amount (cents)
`is_enabled`	boolean	no	false	Carrier visibility
`metadata`	json	yes	null	Additional custom data
`created_at`	timestamp	yes	null	Creation timestamp
`updated_at`	timestamp	yes	null	Last update timestamp

CarrierOption Table

Column	Type	Nullable	Default	Description
`id`	bigint	no	auto	Primary key
`name`	string	no	-	Option name (unique)
`description`	string(255)	yes	null	Option description
`price`	integer	no	-	Shipping price (cents)
`is_enabled`	boolean	no	false	Option visibility
`carrier_id`	bigint	no	-	FK to carrier
`zone_id`	bigint	no	-	FK to zone
`metadata`	json	yes	null	Additional custom data
`created_at`	timestamp	yes	null	Creation timestamp
`updated_at`	timestamp	yes	null	Last update timestamp

Shipping Drivers

Shopper uses a driver-based architecture for shipping, similar to Laravel’s Mail or Queue systems. This allows you to connect carriers directly to shipping provider APIs for real-time rate calculation, or use manual rates stored in your database.

Available Drivers

Driver	Code	Description
Manual	`manual`	Rates come from `CarrierOption` records in your database
UPS	`ups`	Real-time rates from UPS API
FedEx	`fedex`	Real-time rates from FedEx API
USPS	`usps`	Real-time rates from USPS API

Driver Configuration

All driver credentials are stored in your .env file. Publish the shipping configuration file to customize drivers:

php artisan vendor:publish --tag=shopper-config

This creates config/shopper/shipping.php:

return [
    'drivers' => [
        'ups' => [
            'enabled' => env('SHIPPING_UPS_ENABLED', false),
            'sandbox' => env('SHIPPING_SANDBOX', false),
            'credentials' => [
                'client_id' => env('UPS_CLIENT_ID'),
                'client_secret' => env('UPS_CLIENT_SECRET'),
                'user_id' => env('UPS_USER_ID'),
                'account_number' => env('UPS_ACCOUNT_NUMBER'),
            ],
        ],

        'fedex' => [
            'enabled' => env('SHIPPING_FEDEX_ENABLED', false),
            'sandbox' => env('SHIPPING_SANDBOX', false),
            'credentials' => [
                'client_id' => env('FEDEX_CLIENT_ID'),
                'client_secret' => env('FEDEX_CLIENT_SECRET'),
                'account_number' => env('FEDEX_ACCOUNT_NUMBER'),
            ],
        ],

        'usps' => [
            'enabled' => env('SHIPPING_USPS_ENABLED', false),
            'sandbox' => env('SHIPPING_SANDBOX', false),
            'credentials' => [
                'client_id' => env('USPS_CLIENT_ID'),
                'client_secret' => env('USPS_CLIENT_SECRET'),
            ],
        ],
    ],

    'units' => env('SHIPPING_UNITS', 'metric'),
];

Add the credentials to your .env file:

SHIPPING_UPS_ENABLED=true
SHIPPING_SANDBOX=true

UPS_CLIENT_ID=your-client-id
UPS_CLIENT_SECRET=your-client-secret
UPS_USER_ID=your-user-id
UPS_ACCOUNT_NUMBER=your-account-number

Using the Shipping Facade

The Shipping facade provides access to the shipping manager and all registered drivers:

use Shopper\Shipping\Facades\Shipping;

$driver = Shipping::driver('ups');

$allDrivers = Shipping::availableDrivers();

$configured = Shipping::configuredDrivers();

$isReady = Shipping::isConfigured('fedex');

Carrier Driver Integration

The Carrier model provides methods to work with shipping drivers:

$carrier = Carrier::query()->where('driver', 'ups')->first();

if ($carrier->usesApiDriver()) {
    $driver = $carrier->getShippingDriver();
    $isConfigured = $carrier->isDriverConfigured();
}

When a carrier has a driver assigned, Shopper uses that driver to fetch real-time rates from the carrier’s API. When no driver is assigned (or set to manual), rates come from the CarrierOption records in your database.

Calculating Shipping Rates

The CarrierRateService provides a unified way to get shipping rates, regardless of whether the carrier uses an API driver or manual configuration.

use Shopper\Shipping\Services\CarrierRateService;
use Shopper\Shipping\DataTransferObjects\Address;
use Shopper\Shipping\DataTransferObjects\Package;

$service = app(CarrierRateService::class);

$from = new Address(
    firstName: 'Store',
    lastName: 'Warehouse',
    street: '123 Warehouse St',
    city: 'Los Angeles',
    postalCode: '90001',
    state: 'CA',
    country: 'US',
);

$to = new Address(
    firstName: 'John',
    lastName: 'Doe',
    street: '456 Customer Ave',
    city: 'New York',
    postalCode: '10001',
    state: 'NY',
    country: 'US',
);

$packages = [
    new Package(
        length: 30,
        width: 20,
        height: 15,
        weight: 2.5,
        unit: 'metric',
    ),
];

Getting Rates for a Carrier

$rates = $service->getRatesForCarrier(
    carrier: $carrier,
    from: $from,
    to: $to,
    packages: $packages,
    zone: $zone,
);

For carriers with an API driver, rates are fetched from the carrier’s API. For manual carriers, rates come from the CarrierOption records associated with the specified zone.

Getting Rates for a Zone

To get all available shipping rates for a zone across all enabled carriers:

$rates = $service->getRatesForZone(
    zone: $zone,
    from: $from,
    to: $to,
    packages: $packages,
);

ShippingRate DTO

Both methods return a collection of ShippingRate objects:

foreach ($rates as $rate) {
    $rate->serviceCode;
    $rate->serviceName;
    $rate->amount;
    $rate->currency;
    $rate->carrierCode;
    $rate->estimatedDays;
    $rate->formattedAmount();
}

Custom Shipping Drivers

Shopper’s shipping system is designed for extensibility. You can create custom drivers for any shipping provider not included by default, such as DHL, Canada Post, Colissimo, or regional carriers.

Creating a Driver

A shipping driver must implement the ShippingDriver contract. The easiest approach is to extend the abstract Driver class, which provides sensible defaults for optional methods. Create your driver class:

namespace App\Shipping\Drivers;

use Illuminate\Support\Collection;
use Shopper\Shipping\Drivers\Driver;
use Shopper\Shipping\DataTransferObjects\Address;
use Shopper\Shipping\DataTransferObjects\Package;
use Shopper\Shipping\DataTransferObjects\ShippingRate;
use Shopper\Shipping\Exceptions\ShippingException;

final class DhlDriver extends Driver
{
    public function __construct(
        private readonly string $apiKey,
        private readonly string $accountNumber,
        private readonly bool $sandbox = false,
    ) {}

    public function code(): string
    {
        return 'dhl';
    }

    public function name(): string
    {
        return 'DHL Express';
    }

    public function logo(): ?string
    {
        return asset('images/carriers/dhl.svg');
    }

    public function isConfigured(): bool
    {
        return filled($this->apiKey) && filled($this->accountNumber);
    }

    public function calculateRates(Address $from, Address $to, array $packages): Collection
    {
        if (! $this->isConfigured()) {
            throw ShippingException::notConfigured('dhl');
        }

        $packages = $this->normalizePackages($packages);

        $response = Http::withHeaders([
            'DHL-API-Key' => $this->apiKey,
        ])->post($this->getApiUrl().'/rates', [
            'accountNumber' => $this->accountNumber,
            'originAddress' => $this->formatAddress($from),
            'destinationAddress' => $this->formatAddress($to),
            'packages' => $this->formatPackages($packages),
        ]);

        if ($response->failed()) {
            throw ShippingException::apiError('dhl', $response->body());
        }

        return collect($response->json('products'))->map(fn (array $product) => new ShippingRate(
            serviceCode: $product['productCode'],
            serviceName: $product['productName'],
            amount: (int) ($product['totalPrice'] * 100),
            currency: $product['priceCurrency'],
            carrierCode: 'dhl',
            estimatedDays: $product['deliveryCapabilities']['estimatedDeliveryDays'] ?? null,
        ));
    }

    private function getApiUrl(): string
    {
        return $this->sandbox
            ? 'https://express.api.dhl.com/mydhlapi/test'
            : 'https://express.api.dhl.com/mydhlapi';
    }

    private function formatAddress(Address $address): array
    {
        return [
            'postalCode' => $address->postalCode,
            'cityName' => $address->city,
            'countryCode' => $address->country,
        ];
    }

    private function formatPackages(array $packages): array
    {
        return array_map(fn (Package $p) => [
            'weight' => $p->weight,
            'dimensions' => [
                'length' => $p->length,
                'width' => $p->width,
                'height' => $p->height,
            ],
        ], $packages);
    }
}

The Driver Contract

The ShippingDriver contract defines the following methods:

Method	Return	Description
`code()`	`string`	Unique identifier for the driver
`name()`	`string`	Human-readable name displayed in the admin
`logo()`	`?string`	URL to the carrier’s logo
`isConfigured()`	`bool`	Whether required credentials are set
`supportsRealTimeRates()`	`bool`	Whether the driver can fetch rates from an API
`supportsLabels()`	`bool`	Whether the driver can generate shipping labels
`supportsTracking()`	`bool`	Whether the driver can track shipments
`calculateRates()`	`Collection`	Get shipping rates for the given addresses and packages
`createShipment()`	`Shipment`	Create a shipment and get the label
`track()`	`TrackingInfo`	Get tracking information for a shipment

The abstract Driver class provides default implementations for supportsRealTimeRates(), supportsLabels(), and supportsTracking() (all return true), and throws ShippingException::notSupported() for createShipment() and track(). Override these methods as needed for your driver.

Registering the Driver

namespace App\Providers;

use App\Shipping\Drivers\DhlDriver;
use Illuminate\Support\ServiceProvider;
use Shopper\Shipping\Facades\Shipping;

class ShippingServiceProvider extends ServiceProvider
{
    public function boot(): void
    {
        Shipping::extend('dhl', function (): DhlDriver {
            $config = config('shopper.shipping.drivers.dhl', []);

            return new DhlDriver(
                apiKey: $config['credentials']['api_key'] ?? '',
                accountNumber: $config['credentials']['account_number'] ?? '',
                sandbox: $config['sandbox'] ?? false,
            );
        });
    }
}

The closure receives the driver name as a parameter and must return an instance of ShippingDriver. Drivers are resolved lazily, meaning the closure is only called when the driver is first accessed.

Adding Configuration

Add your driver configuration to config/shopper/shipping.php:

'drivers' => [
    // ... existing drivers

    'dhl' => [
        'enabled' => env('SHIPPING_DHL_ENABLED', false),
        'sandbox' => env('SHIPPING_SANDBOX', false),
        'credentials' => [
            'api_key' => env('DHL_API_KEY'),
            'account_number' => env('DHL_ACCOUNT_NUMBER'),
        ],
    ],
],

Once registered, your driver appears automatically in the carrier form dropdown and can be assigned to carriers like any built-in driver.

Driver Capabilities

The abstract Driver class provides a normalizePackages() helper method that converts between metric and imperial units. This is useful since different carriers expect different unit systems:

public function calculateRates(Address $from, Address $to, array $packages): Collection
{
    $packages = $this->normalizePackages($packages, 'imperial');
    // ...
}

Pass 'metric' for carriers expecting centimeters and kilograms, or 'imperial' for those expecting inches and pounds.

Relationships

Carrier Options

$carrier->options;

$carrier->options()->enabled()->get();

$carrier->options()->create([
    'name' => 'Express Delivery',
    'price' => 15,
    'zone_id' => $zoneId,
    'is_enabled' => true,
]);

Zone (CarrierOption)

$option->zone;

CarrierOption::query()
    ->where('zone_id', $zoneId)
    ->enabled()
    ->get();

Carrier (CarrierOption)

$option->carrier;

Query Scopes

use Shopper\Core\Models\Carrier;
use Shopper\Core\Models\CarrierOption;

Carrier::query()->enabled()->get();

CarrierOption::query()->enabled()->get();

Price Handling

CarrierOption prices are stored in cents:

$option = CarrierOption::query()->create([
    'name' => 'Standard Shipping',
    'price' => 1000,
    'zone_id' => $zoneId,
    'carrier_id' => $carrierId,
]);

shopper_money_format($option->price, $zone->currency->code);

Creating Carriers

Manual Carrier

For carriers where you define rates manually in the database:

use Shopper\Core\Models\Carrier;

$carrier = Carrier::query()->create([
    'name' => 'Local Delivery',
    'slug' => 'local-delivery',
    'description' => 'Same-day delivery within city limits',
    'is_enabled' => true,
]);

$carrier->options()->createMany([
    [
        'name' => 'Standard',
        'price' => 5,
        'zone_id' => $localZoneId,
        'is_enabled' => true,
    ],
    [
        'name' => 'Express (2 hours)',
        'price' => 15,
        'zone_id' => $localZoneId,
        'is_enabled' => true,
    ],
]);

API-Connected Carrier

For carriers using a shipping driver to fetch real-time rates:

$carrier = Carrier::query()->create([
    'name' => 'UPS',
    'slug' => 'ups',
    'driver' => 'ups',
    'link_url' => 'https://ups.com',
    'is_enabled' => true,
]);

With an API driver, you don’t need to create CarrierOption records. Rates are fetched directly from the carrier’s API when needed.

Free Shipping Option

$freeShipping = Carrier::query()->create([
    'name' => 'Free Shipping',
    'slug' => 'free-shipping',
    'description' => 'Free standard shipping',
    'is_enabled' => true,
]);

$freeShipping->options()->create([
    'name' => 'Free Standard Delivery',
    'price' => 0,
    'zone_id' => $domesticZoneId,
    'is_enabled' => true,
    'metadata' => [
        'min_order_amount' => 5000,
        'estimated_days' => '5-7',
    ],
]);

Retrieving Carriers

use Shopper\Core\Models\Carrier;
use Shopper\Core\Models\CarrierOption;

$carriers = Carrier::query()
    ->enabled()
    ->with(['options' => fn ($q) => $q->enabled()])
    ->get();

$carrier = Carrier::query()
    ->where('slug', 'fedex')
    ->first();

$options = CarrierOption::query()
    ->where('zone_id', $zoneId)
    ->enabled()
    ->with('carrier')
    ->orderBy('price')
    ->get();

$cheapest = CarrierOption::query()
    ->where('zone_id', $zoneId)
    ->enabled()
    ->orderBy('price')
    ->first();

Working with Orders

use Shopper\Core\Models\Order;
use Shopper\Core\Models\OrderShipping;

$order->shippingOption;

OrderShipping::query()->create([
    'order_id' => $order->id,
    'carrier_id' => $carrierId,
    'shipped_at' => now(),
    'tracking_number' => 'TRACK123456',
    'tracking_url' => 'https://fedex.com/track/TRACK123456',
]);

Storefront Example

Checkout Shipping Selection

The origin address for shipping calculations should come from your store’s inventory (warehouse). Shopper uses the Inventory model to represent physical locations where products are stored and shipped from.

namespace App\Http\Controllers;

use Shopper\Core\Models\Inventory;
use Shopper\Core\Models\Zone;
use Shopper\Shipping\Services\CarrierRateService;
use Shopper\Shipping\DataTransferObjects\Address;
use Shopper\Shipping\DataTransferObjects\Package;

class CheckoutController extends Controller
{
    public function __construct(
        private readonly CarrierRateService $rateService,
    ) {}

    public function showShipping(?int $inventoryId = null)
    {
        $inventory = $this->getShippingInventory($inventoryId);
        $zone = $this->getCustomerZone();
        $from = $this->getInventoryAddress($inventory);
        $to = $this->getCustomerAddress();
        $packages = $this->getCartPackages();

        $shippingOptions = $this->rateService->getRatesForZone(
            zone: $zone,
            from: $from,
            to: $to,
            packages: $packages,
        );

        return view('checkout.shipping', compact('shippingOptions'));
    }

    private function getShippingInventory(?int $inventoryId = null): Inventory
    {
        if ($inventoryId) {
            return Inventory::query()->findOrFail($inventoryId);
        }

        return Inventory::query()->default()->firstOrFail();
    }

    private function getInventoryAddress(Inventory $inventory): Address
    {
        return new Address(
            firstName: $inventory->name,
            lastName: '',
            street: $inventory->street_address,
            street2: $inventory->street_address_plus,
            city: $inventory->city,
            postalCode: $inventory->postal_code,
            state: $inventory->state ?? '',
            country: $inventory->country->cca2,
            phone: $inventory->phone_number,
            email: $inventory->email,
        );
    }

    private function getCustomerAddress(): Address
    {
        $address = Cart::shippingAddress();

        return new Address(
            firstName: $address->first_name,
            lastName: $address->last_name,
            street: $address->street_address,
            city: $address->city,
            postalCode: $address->postal_code,
            state: $address->state ?? '',
            country: $address->country_name,
        );
    }

    private function getCartPackages(): array
    {
        return [
            new Package(
                length: Cart::totalLength(),
                width: Cart::totalWidth(),
                height: Cart::totalHeight(),
                weight: Cart::totalWeight(),
            ),
        ];
    }

    private function getCustomerZone(): Zone
    {
        $address = Cart::shippingAddress();

        return Zone::query()
            ->whereHas('countries', fn ($q) => $q->where('name', $address->country_name))
            ->first();
    }
}

If your store has multiple warehouses, you can pass the inventory ID to ship from a specific location. This is useful for selecting the nearest warehouse to the customer or the one with available stock:

return redirect()->route('checkout.shipping', ['inventoryId' => $nearestInventory->id]);

Use Cases

Carrier	Options
USPS	Priority Mail, First-Class, Media Mail
FedEx	Ground, Express, Overnight
UPS	Ground, 2-Day, Next Day Air
DHL	Express, Economy, Freight
Local	Same-Day, Pick-up

Scenario	Implementation
Flat rate shipping	Manual carrier with single option at fixed price
Free shipping threshold	Use metadata for min_order_amount
Zone-based pricing	Create options per zone for manual carriers
Real-time rates	Assign a shipping driver to the carrier
Hybrid approach	Manual carriers for local, API drivers for national/international

​Models

​Database Schema

​Carrier Table

​CarrierOption Table

​Shipping Drivers

​Available Drivers

​Driver Configuration

​Using the Shipping Facade

​Carrier Driver Integration

​Calculating Shipping Rates

​Getting Rates for a Carrier

​Getting Rates for a Zone

​ShippingRate DTO

​Custom Shipping Drivers

​Creating a Driver

​The Driver Contract

​Registering the Driver

​Adding Configuration

​Driver Capabilities

​Relationships

​Carrier Options

​Zone (CarrierOption)

​Carrier (CarrierOption)

​Query Scopes

​Price Handling

​Creating Carriers

​Manual Carrier

​API-Connected Carrier

​Free Shipping Option

​Retrieving Carriers

​Working with Orders

​Storefront Example

​Checkout Shipping Selection

​Use Cases